photopea-embedded-editor

name	photopea-embedded-editor
description	Embed Photopea in web apps using photopea.js. Covers embedding, file I/O, scripting, exporting, layers, text, filters, and the full Photoshop-compatible API.
risk	safe
source	community
source_repo	yikuansun/PhotopeaAPI
source_type	community
license	MIT
license_source	https://github.com/yikuansun/PhotopeaAPI/blob/master/LICENSE
date_added	"2026-05-20T00:00:00.000Z"

Photopea Embedded Editor Skill

Using photopea.js (yikuansun/PhotopeaAPI) in Websites & Apps

---

When to Use This Skill

Use this skill for every task that involves:

• Embedding Photopea as an image editor inside a webpage or web app
• Controlling an embedded Photopea instance from your JavaScript code
• Automating image editing workflows from a host page (open files, run scripts, export results)
• Building an image editing feature into your product using Photopea as the engine
• Writing scripts to manipulate documents, layers, text, selections, filters, colors, and paths

Do NOT use raw postMessage wiring — always use photopea.js as the wrapper.

---

Library: photopea.js

photopea.js is a Promises-based JavaScript wrapper around the Photopea Live Messaging API. Repository: https://github.com/yikuansun/PhotopeaAPI npm package: https://www.npmjs.com/package/photopea

Installation

CDN (no build step)

<script src="https://cdn.jsdelivr.net/npm/photopea@1.1.1/dist/photopea.min.js"></script>

Self-hosted

<script src="./photopea.min.js"></script>

npm (Webpack / Vite / Rollup)

npm install photopea

import Photopea from "photopea";

---

Core API: The Photopea Class

Method	Description
Photopea.createEmbed(container)	Creates + injects the iframe, resolves when ready
new Photopea(window.parent)	Plugin mode: wrap the parent window
pea.runScript(script)	Run JS string inside Photopea; returns output array
pea.loadAsset(arrayBuffer)	Load binary file (image, font, brush, etc.)
pea.openFromURL(url, asSmart)	Open remote URL as new doc or smart object layer
pea.exportImage(type)	Export current doc; returns Blob ("png" or "jpg")

All methods return Promises — always await or .then().

---

Step 1 — Embed

The container <div> must have a fixed width and height before calling createEmbed.

<div id="editor" style="width:1000px; height:650px;"></div>
<script src="https://cdn.jsdelivr.net/npm/photopea@1.1.1/dist/photopea.min.js"></script>
<script>
  Photopea.createEmbed(document.getElementById("editor")).then(async (pea) => {
    // pea is ready
  });
</script>

React:

import { useEffect, useRef } from "react";
import Photopea from "photopea";

export default function Editor() {
  const containerRef = useRef(null);
  const peaRef       = useRef(null);

  useEffect(() => {
    if (!containerRef.current || peaRef.current) return;
    Photopea.createEmbed(containerRef.current).then((pea) => {
      peaRef.current = pea;
    });
  }, []);

  return <div ref={containerRef} style={{ width: "100%", height: "650px" }} />;
}

---

Step 2 — Opening Files

// Remote URL → new document
await pea.openFromURL("https://example.com/design.psd", false);

// Remote URL → smart object layer inside current document
await pea.openFromURL("https://example.com/overlay.png", true);

// Local file (user input → ArrayBuffer → loadAsset)
document.getElementById("fileInput").addEventListener("change", async (e) => {
  const buf = await e.target.files[0].arrayBuffer();
  await pea.loadAsset(buf);
});

// Base64 data URI via runScript
await pea.runScript(`app.open("data:image/png;base64,iVBORw0...");`);

---

Step 3 — Running Scripts

runScript sends a JS string, returns an array of app.echoToOE(...) values + "done" last.

const result = await pea.runScript(`app.echoToOE("hello");`);
// result → ["hello", "done"]

// Return structured data
const out = await pea.runScript(`
  app.echoToOE(JSON.stringify({
    width:  app.activeDocument.width,
    height: app.activeDocument.height,
    layers: app.activeDocument.layers.length
  }));
`);
const info = JSON.parse(out[0]);

---

Step 4 — Exporting

// PNG Blob (via exportImage)
const blob = await pea.exportImage("png");
document.getElementById("preview").src = URL.createObjectURL(blob);

// JPEG Blob
const blob = await pea.exportImage("jpg");

// WebP / PSD / quality-controlled JPEG via saveToOE
const result = await pea.runScript(`app.activeDocument.saveToOE("webp:0.85");`);
const webpBlob = new Blob([result[0]], { type: "image/webp" });

const result = await pea.runScript(`app.activeDocument.saveToOE("psd:true");`);
const psdBlob  = new Blob([result[0]], { type: "application/octet-stream" });

// Trigger download
async function download(pea, filename = "export.png") {
  const blob = await pea.exportImage("png");
  const a    = Object.assign(document.createElement("a"), {
    href:     URL.createObjectURL(blob),
    download: filename
  });
  a.click();
}

Export format strings for saveToOE:

String	Format
"png"	PNG lossless
"jpg"	JPEG default
"jpg:0.8"	JPEG quality 0.0–1.0
"webp:0.7"	WebP quality 0.0–1.0
"psd"	Full PSD
"psd:true"	Minified PSD
"svg:true"	SVG

---

Step 5 — Loading Assets

// Font
const buf = await (await fetch("https://example.com/MyFont.otf")).arrayBuffer();
await pea.loadAsset(buf);
// Now usable in textItem.font

// Brush
await pea.loadAsset(await (await fetch("Nature.ABR")).arrayBuffer());

// Gradient
await pea.loadAsset(await (await fetch("Gradients.GRD")).arrayBuffer());

---

Step 6 — Plugin Mode

// Your page is inside Photopea's sidebar iframe
const pea = new Photopea(window.parent);

const out = await pea.runScript(`app.echoToOE(app.activeDocument.width);`);
console.log("Width:", out[0]);

// Load an asset from your plugin
const buf = await (await fetch("https://my-assets.com/sticker.png")).arrayBuffer();
await pea.loadAsset(buf);

Plugin config:

{
  "environment": {
    "plugins": [{
      "name": "My Plugin",
      "url":  "https://my-plugin.example.com",
      "icon": "===https://my-plugin.example.com/icon.png"
    }]
  }
}

---

Utility Patterns

addImageAndWait — robust async layer insertion

async function addImageAndWait(pea, imgURI) {
  let count = "done";
  while (count === "done")
    count = (await pea.runScript(`app.echoToOE(app.activeDocument.layers.length)`))[0];
  count = parseInt(count);

  const imageUrlLiteral = JSON.stringify(imgURI);
  await pea.runScript(`app.open(${imageUrlLiteral}, null, true);`);

  return new Promise((resolve) => {
    const check = async () => {
      const n = parseInt((await pea.runScript(
        `app.echoToOE(app.activeDocument.layers.length)`
      ))[0]);
      n === count + 1 ? resolve() : setTimeout(check, 50);
    };
    check();
  });
}

getDocumentAsImage — returns <img> element

async function getDocumentAsImage(pea) {
  const result = await pea.runScript(`app.activeDocument.saveToOE('png')`);
  return new Promise((resolve) => {
    const fr = new FileReader();
    fr.addEventListener("load", (e) => {
      const img = new Image(); img.src = e.target.result; resolve(img);
    });
    fr.readAsDataURL(new Blob([result[0]], { type: "image/png" }));
  });
}

---

Real-World Patterns

Pattern A — Open + Export UI

<input type="file" id="fileInput" accept="image/*,.psd">
<button id="exportBtn">Export PNG</button>
<div id="editor" style="width:100%;height:600px;"></div>
<script src="https://cdn.jsdelivr.net/npm/photopea@1.1.1/dist/photopea.min.js"></script>
<script>
let pea;
Photopea.createEmbed(document.getElementById("editor")).then(p => pea = p);

document.getElementById("fileInput").addEventListener("change", async e => {
  await pea.loadAsset(await e.target.files[0].arrayBuffer());
});
document.getElementById("exportBtn").addEventListener("click", async () => {
  const blob = await pea.exportImage("png");
  const a = Object.assign(document.createElement("a"), {
    href: URL.createObjectURL(blob), download: "export.png"
  });
  a.click();
});
</script>

Pattern B — Template + Text Edit + Export

async function generateCard(pea, name, tagline) {
  await pea.openFromURL("https://example.com/card.psd", false);
  const nameLiteral = JSON.stringify(name);
  const taglineLiteral = JSON.stringify(tagline);
  await pea.runScript(`
    app.activeDocument.layers.getByName("Name").textItem.contents    = ${nameLiteral};
    app.activeDocument.layers.getByName("Tagline").textItem.contents = ${taglineLiteral};
  `);
  return await pea.exportImage("png");
}

Pattern C — Batch Watermark

async function batchWatermark(pea, imageURLs, watermarkURL) {
  const results = [];
  for (const url of imageURLs) {
    await pea.openFromURL(url, false);
    await pea.openFromURL(watermarkURL, true);
    await pea.runScript(`
      var doc = app.activeDocument, wm = doc.activeLayer;
      wm.translate(doc.width - wm.bounds[2] - 20, doc.height - wm.bounds[3] - 20);
      wm.opacity = 70;
    `);
    results.push(await pea.exportImage("png"));
    await pea.runScript(`app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);`);
  }
  return results;
}

---

FULL SCRIPTING API REFERENCE

All code in this section runs inside pea.runScript("...") strings. Photopea implements the Adobe Photoshop CC 2015 JavaScript scripting interface. Any Photoshop script targeting that version should work in Photopea.

---

app — Application Object

Properties

Property	Type	R/W	Description
app.activeDocument	Document	R/W	The currently active document
app.documents	Documents	R	Collection of all open documents
app.documents.length	number	R	Count of open documents
app.documents[i]	Document	R	Access by zero-based index
app.foregroundColor	SolidColor	R/W	Current foreground color
app.backgroundColor	SolidColor	R/W	Current background color
app.preferences.rulerUnits	Units	R/W	Units.PIXELS, Units.CM, Units.INCHES, Units.MM, Units.PICAS, Units.POINTS, Units.PERCENT
app.preferences.typeUnits	TypeUnits	R/W	TypeUnits.PIXELS, TypeUnits.MM, TypeUnits.POINTS
app.displayDialogs	DialogModes	R/W	DialogModes.NO, DialogModes.ALL, DialogModes.ERROR

Methods

Method	Description
app.open(url)	Open URL as new document
app.open(url, null, true)	Open URL as smart object layer in active document
app.echoToOE(string)	Photopea extension — send string to host page (captured by runScript)
app.showWindow("magiccut")	Photopea extension — open Magic Cut panel
app.showWindow("vbitmap")	Photopea extension — open Vectorize Bitmap panel
app.UI.zoomIn()	Zoom in
app.UI.zoomOut()	Zoom out
app.UI.fitTheArea()	Fit canvas to viewport
app.UI.pixelToPixel()	100% zoom
app.UI.switchFullscreen()	Toggle fullscreen
app.UI.scroll(dx, dy)	Scroll by delta
app.UI.scrollTo(x, y)	Scroll to absolute position

Important: Always set ruler units to pixels at the start of any script that uses pixel measurements:

var savedUnits = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS;
// ... your code ...
app.preferences.rulerUnits = savedUnits;

---

Document — Document Object

Access via app.activeDocument or app.documents[i].

Properties

Property	Type	R/W	Description
width	number	R	Document width in current ruler units
height	number	R	Document height in current ruler units
resolution	number	R	DPI (pixels per inch)
name	string	R/W	Photopea extension — display label (no history step)
source	string	R/W	Photopea extension — file origin URL or "local,X,NAME"
mode	DocumentMode	R	DocumentMode.RGB, GRAYSCALE, CMYK, LAB, BITMAP, INDEXEDCOLOR, MULTICHANNEL
bitsPerChannel	BitsPerChannelType	R	BitsPerChannelType.EIGHT, SIXTEEN, THIRTYTWO
colorProfileName	string	R	Name of embedded color profile
activeLayer	Layer/ArtLayer/LayerSet	R/W	Set to activate a layer
currentLayer	ArtLayer	R/W	Alias for activeLayer
layers	Layers	R	All top-level layers (both art + group)
artLayers	ArtLayers	R	All top-level art layers only
layerSets	LayerSets	R	All top-level group layers only
selection	Selection	R	The current selection
channels	Channels	R	All channels
historyStates	HistoryStates	R	Undo history
activeHistoryState	HistoryState	R/W	Current history position
layerComps	LayerComps	R	Layer comps collection
guides	Guides	R	Guides collection
pathItems	PathItems	R	Vector paths
id	number	R	Unique document ID
saved	boolean	R	Whether document has unsaved changes
quickMaskMode	boolean	R	Whether in Quick Mask mode
backgroundLayer	ArtLayer	R	The background layer
pixelAspectRatio	number	R	Custom pixel aspect ratio (0.1–10.0)
histogram	array	R	256-element histogram array

Methods

Method	Signature	Description
resizeImage	(w, h, res, resampleMethod)	Resize image pixels. ResampleMethod: BICUBIC, BILINEAR, NEARESTNEIGHBOR, NONE, BICUBICSHARPER, BICUBICSMOOTHER
resizeCanvas	(w, h, anchor)	Resize canvas without scaling. AnchorPosition: TOPLEFT, TOPCENTER, TOPRIGHT, MIDDLELEFT, MIDDLECENTER, MIDDLERIGHT, BOTTOMLEFT, BOTTOMCENTER, BOTTOMRIGHT
rotateCanvas	(degrees)	Rotate entire canvas. Positive = clockwise
flipCanvas	(direction)	Direction.HORIZONTAL or Direction.VERTICAL
crop	([x1,y1,x2,y2], angle, w, h)	Crop canvas. Angle and dimensions are optional
trim	(trimType, top, left, bottom, right)	Trim transparent/background-color borders. TrimType: TRANSPARENT, TOPLEFT, BOTTOMRIGHT
revealAll	()	Expand canvas to show clipped content
flatten	()	Merge all layers into one
mergeVisibleLayers	()	Merge all visible layers
rasterizeAllLayers	()	Rasterize all vector/text layers
changeMode	(mode, options)	Convert color mode (e.g., ChangeMode.GRAYSCALE)
convertProfile	(profileName, renderingIntent, blackPointCompensation, dither)	Convert color profile
duplicate	(name, mergedLayers)	Duplicate the document
close	(saveOptions)	Close document. SaveOptions: DONOTSAVECHANGES, SAVECHANGES, PROMPTTOSAVECHANGES
save	()	Save (requires server config in embed)
saveToOE	(format)	Photopea extension — send binary to host. Formats: "png", "jpg:0.8", "webp:0.7", "psd:true", "svg:true"
clearHistory	()	Photopea extension — clear undo history to free RAM
exportDocument	(file, exportType, options)	Export to filesystem (triggers ZIP). ExportType: SAVEFORWEB
paste	(intoSelection)	Paste clipboard into document
suspendHistory	(historyName, callback)	Wrap multiple ops in one history state

Practical examples:

var doc = app.activeDocument;

// Resize image to 1920×1080 at 72dpi bicubic
doc.resizeImage(1920, 1080, 72, ResampleMethod.BICUBIC);

// Expand canvas to 2000px wide, keeping content centered
doc.resizeCanvas(2000, doc.height, AnchorPosition.MIDDLECENTER);

// Crop to a region
doc.crop([100, 100, 900, 600]);

// Trim transparent edges
doc.trim(TrimType.TRANSPARENT, true, true, true, true);

// Flip horizontal
doc.flipCanvas(Direction.HORIZONTAL);

// Change to grayscale
doc.changeMode(ChangeMode.GRAYSCALE);

// One undo step for many operations
doc.suspendHistory("Batch Edit", "action");
// (Inside Photopea, all ops become one history state)

// Export PNG to filesystem (triggers ZIP download)
var opts = new ExportOptionsSaveForWeb();
opts.format  = SaveDocumentType.PNG;
opts.PNG8    = false;
opts.quality = 100;
doc.exportDocument(new File("/output.png"), ExportType.SAVEFORWEB, opts);

// Close without saving
doc.close(SaveOptions.DONOTSAVECHANGES);

---

Layers / ArtLayers / LayerSets Collections

These collections exist on Document, LayerSet (groups within groups), and can be iterated.

var doc = app.activeDocument;

// Access
doc.layers          // all top-level (art + groups)
doc.artLayers       // top-level art layers only
doc.layerSets       // top-level group layers only

// By index (0 = topmost)
doc.layers[0]
doc.layers[doc.layers.length - 1]  // bottommost

// By name (throws if not found)
doc.layers.getByName("Background")
doc.artLayers.getByName("Logo")
doc.layerSets.getByName("Header Group")

// Add
var newLayer  = doc.artLayers.add();         // new blank art layer
var newGroup  = doc.layerSets.add();         // new group
var innerLayer = newGroup.artLayers.add();   // layer inside a group

// Remove
doc.artLayers.getByName("Temp").remove();

// Iterate all layers recursively
function walkLayers(parent) {
  for (var i = 0; i < parent.layers.length; i++) {
    var l = parent.layers[i];
    if (l.typename === "LayerSet") walkLayers(l);
    else /* ArtLayer */ processLayer(l);
  }
}
walkLayers(doc);

---

ArtLayer — Individual Layer

Properties

Property	Type	R/W	Description
name	string	R/W	Layer name
visible	boolean	R/W	Layer visibility
opacity	number	R/W	Layer opacity 0–100
fillOpacity	number	R	Fill opacity 0–100
blendMode	BlendMode	R/W	Blend mode (see enum below)
kind	LayerKind	R/W	Layer type (can set to LayerKind.TEXT on empty layer)
textItem	TextItem	R	Text object (only when kind === LayerKind.TEXT)
bounds	array	R	[left, top, right, bottom] in current ruler units
parent	Document/LayerSet	R	Containing object
typename	string	R	Always "ArtLayer"
selected	boolean	R	Photopea extension — is layer highlighted in panel
isBackgroundLayer	boolean	R	Is this the locked background layer
grouped	boolean	R	Is clipping mask applied
pixelsLocked	boolean	R	Pixels locked
positionLocked	boolean	R	Position locked
transparentPixelsLocked	boolean	R	Transparent pixels locked
layerMaskDensity	number	R	Layer mask density 0–100
layerMaskFeather	number	R	Layer mask feather 0–250
vectorMaskDensity	number	R	Vector mask density 0–100
vectorMaskFeather	number	R	Vector mask feather 0–250

Transform Methods

Method	Signature	Description
translate	(deltaX, deltaY)	Move layer by offset
rotate	(angle, anchor)	Rotate by degrees. AnchorPosition optional (default center)
resize	(widthPct, heightPct, anchor)	Scale as percentage of current size
rasterize	(target)	Rasterize. RasterizeType: ENTIRE, FILLCONTENT, LAYERCLIPPINGMASK, LINKEDLAYERS, SHAPE, TEXTCONTENTS, VECTORMASK

Layer Management Methods

Method	Signature	Description
duplicate	()	Duplicate to same document, returns new layer
duplicate	(doc, placement)	Duplicate to another document
remove	()	Delete the layer
merge	()	Merge down; returns the merged ArtLayer
move	(relativeLayer, placement)	Reorder. ElementPlacement: PLACEBEFORE, PLACEAFTER, PLACEATBEGINNING, PLACEATEND, INSIDE
copy	(merged)	Copy to clipboard
cut	()	Cut to clipboard
clear	()	Cut without clipboard

Adjustment Methods on ArtLayer

Method	Signature	Description
adjustBrightnessContrast	(brightness, contrast)	Brightness -100–100, Contrast -100–100
adjustColorBalance	(shadows, midtones, highlights, preserveLuminosity)	Each is [cyan-red, magenta-green, yellow-blue] array
adjustCurves	(curveShape)	Array of [input,output] pairs per channel
adjustLevels	(inputRangeStart, inputRangeEnd, gamma, outputRangeStart, outputRangeEnd)	Levels adjustment
autoLevels	()	Auto levels
autoContrast	()	Auto contrast
desaturate	()	Convert to grayscale values in current mode
equalize	()	Equalize brightness distribution
invert	()	Invert pixel colors
posterize	(levels)	Posterize (2–255 levels)
threshold	(level)	B&W threshold (1–255)
shadowHighlight	(shadowAmount, shadowWidth, shadowRadius, highlightAmount, highlightWidth, highlightRadius, colorCorrection, midtoneContrast, blackClip, whiteClip)	Shadows/Highlights
photoFilter	(fillColor, density, luminosity)	Photo filter
mixChannels	(outputChannels, monochrome)	Channel mixer
selectiveColor	(colors, cyan, magenta, yellow, black, method)	Selective color

Filter Methods on ArtLayer

Method	Signature	Description
applyGaussianBlur	(radius)	Gaussian blur (0.1–250 px radius)
applyMotionBlur	(angle, distance)	Motion blur
applyRadialBlur	(amount, blurMethod, blurQuality)	Radial blur
applySmartBlur	(radius, threshold, blurQuality, blurMode)	Smart blur
applyBlur	()	Simple blur
applyBlurMore	()	Blur more
applyUnSharpMask	(amount, radius, threshold)	Unsharp mask
applySharpen	()	Sharpen
applySharpenEdges	()	Sharpen edges
applySharpenMore	()	Sharpen more
applyAddNoise	(amount, distribution, monochromatic)	Add noise. NoiseDistribution: GAUSSIAN, UNIFORM
applyDespeckle	()	Despeckle
applyDustAndScratches	(radius, threshold)	Dust and scratches
applyMedianNoise	(radius)	Median noise reduction
applyMaximum	(radius)	Maximum filter (dilate)
applyMinimum	(radius)	Minimum filter (erode)
applyHighPass	(radius)	High pass
applyOffset	(horizontal, vertical, undefinedAreas)	Offset. UndefinedAreas: SETTOBACKGROUND, WRAPAROUND, REPEATEDGEPIXELS
applyRipple	(amount, size)	Ripple. RippleSize: SMALL, MEDIUM, LARGE
applyWave	(generators, minWavelength, maxWavelength, minAmplitude, maxAmplitude, horizScale, vertScale, waveType, undefinedAreas, randomSeed)	Wave filter
applyZigZag	(amount, ridges, style)	Zig-Zag
applyTwirl	(angle)	Twirl
applyPolarCoordinates	(conversion)	Polar coordinates
applySpherize	(amount, mode)	Spherize
applyPinch	(amount)	Pinch (-100–100)
applyShear	(curve, undefinedAreas)	Shear
applyDisplace	(horizontalScale, verticalScale, displacementType, undefinedAreas, displacementMapFile)	Displace
applyClouds	()	Render Clouds
applyDifferenceClouds	()	Difference Clouds
applyLensFlare	(brightness, flareCenter, lensType)	Lens Flare. LensType: ZOOMWIDE, ZOOMNORMAL, MOVIE
applyDiffuseGlow	(graininess, glowAmount, clearAmount)	Diffuse Glow
applyGlassEffect	(distortion, smoothness, scaling, invert, texture, textureFile)	Glass
applyOceanRipple	(size, magnitude)	Ocean Ripple
applyLensBlur	(source, focalDistance, invertDepthMap, shape, radius, bladeCurvature, rotation, brightness, threshold, amount, distribution, monochromatic)	Lens Blur
applyAverage	()	Average blur
applyDeInterlace	(eliminateFields, createFields)	De-interlace
applyNTSC	()	NTSC colors
applyCustomFilter	(characteristics, scale, offset)	Custom filter (5×5 matrix)
applyTextureFill	(textureFile)	Texture fill
applyStyle	(styleName)	Apply a layer style preset by name
photoFilter	(fillColor, density, luminosity)	Photo Filter

Practical examples:

var layer = app.activeDocument.activeLayer;

// Move to absolute position (layer.bounds[0] = current left edge)
layer.translate(200 - layer.bounds[0], 100 - layer.bounds[1]);

// Rotate 45° around center
layer.rotate(45);

// Scale to 50% keeping center
layer.resize(50, 50, AnchorPosition.MIDDLECENTER);

// Gaussian blur radius 10
layer.applyGaussianBlur(10);

// Unsharp mask
layer.applyUnSharpMask(50, 2, 0);

// Levels: input 0–200, gamma 1.2, output 0–255
layer.adjustLevels(0, 200, 1.2, 0, 255);

// Brightness +20, Contrast +10
layer.adjustBrightnessContrast(20, 10);

// Invert
layer.invert();

// Rasterize text
layer.rasterize(RasterizeType.TEXTCONTENTS);

// Duplicate layer
var copy = layer.duplicate();
copy.name = "Layer Copy";

// Move layer below another
var target = doc.layers.getByName("Background");
layer.move(target, ElementPlacement.PLACEAFTER);

---

LayerSet — Group Layer

A LayerSet is a folder/group in the Layers panel. It has the same layer management methods as Document.

Properties

Property	Type	R/W	Description
name	string	R/W	Group name
visible	boolean	R/W	Group visibility
opacity	number	R/W	Group opacity 0–100
blendMode	BlendMode	R/W	Group blend mode
bounds	array	R	Bounding box [left,top,right,bottom]
layers	Layers	R	All layers inside this group
artLayers	ArtLayers	R	Art layers inside this group
layerSets	LayerSets	R	Sub-groups inside this group
parent	Document/LayerSet	R	Parent container
typename	string	R	Always "LayerSet"

Methods

Same as Document for layer management: layers.add(), artLayers.add(), layerSets.add(), .getByName(), plus duplicate(), remove(), move().

// Create group with layers inside
var group = doc.layerSets.add();
group.name = "Product Card";

var bgLayer   = group.artLayers.add(); bgLayer.name = "Background";
var textLayer = group.artLayers.add(); textLayer.kind = LayerKind.TEXT;
textLayer.textItem.contents = "Buy Now";
textLayer.textItem.size     = 36;

// Collapse/expand group (Photopea specific, not in standard DOM)
// Use visibility as workaround

// Get specific layer inside a group
var innerLayer = doc.layerSets.getByName("Header Group").artLayers.getByName("Title");

---

TextItem — Text Layer Content

Access via layer.textItem on any layer with layer.kind === LayerKind.TEXT.

Core Properties (most commonly used)

Property	Type	R/W	Description
contents	string	R/W	The actual text content
font	string	R/W	Font PostScript name (e.g. "ArialMT", "Verdana-Bold")
size	number	R/W	Font size in points
color	SolidColor	R/W	Text color
position	array	R/W	[x, y] origin of text (point text) or bounding box top-left
justification	Justification	R/W	Justification.LEFT, CENTER, RIGHT, FULLJUSTIFY
kind	TextType	R/W	TextType.POINTTEXT or TextType.PARAGRAPHTEXT
width	number	R/W	Width of bounding box (paragraph text only)
height	number	R/W	Height of bounding box (paragraph text only)
direction	Direction	R/W	Direction.HORIZONTAL or Direction.VERTICAL

Typography Properties

Property	Type	R/W	Description
leading	number	R/W	Line spacing in points
tracking	number	R/W	Letter spacing -1000–10000 (1000 = 1 em)
horizontalScale	number	R/W	Horizontal scaling 0–1000%
verticalScale	number	R/W	Vertical scaling 0–1000%
baselineShift	number	R/W	Baseline offset in points
capitalization	Case	R/W	Case.NORMAL, ALLCAPS, SMALLCAPS
fauxBold	boolean	R/W	Simulated bold
fauxItalic	boolean	R/W	Simulated italic
underline	UnderlineType	R/W	UnderlineType.NONE, UNDERLINELEFT, UNDERLINERIGHT
strikeThru	StrikeThruType	R/W	StrikeThruType.NONE, STRIKEBOX, STRIKEHEIGHT
antiAliasMethod	AntiAlias	R/W	AntiAlias.NONE, SHARP, CRISP, STRONG, SMOOTH
autoKerning	AutoKernType	R/W	AutoKernType.MANUAL, METRICS, OPTICAL
language	Language	R/W	Language.ENGLISH, etc.
ligatures	boolean	R/W	Enable ligatures
alternateLigatures	boolean	R/W	Enable alternate ligatures
oldStyle	boolean	R/W	Old-style numerals
noBreak	boolean	R/W	Prevent line breaks in this text
useAutoLeading	boolean	R/W	Use font's built-in leading
autoLeadingAmount	number	R/W	Auto leading percentage 0.01–5000
hyphenation	boolean	R/W	Enable hyphenation

Paragraph Properties

Property	Type	R/W	Description
leftIndent	number	R/W	Left indent -1296–1296
rightIndent	number	R/W	Right indent -1296–1296
firstLineIndent	number	R/W	First line indent -1296–1296
spaceBefore	number	R/W	Space before paragraph -1296–1296
spaceAfter	number	R/W	Space after paragraph -1296–1296
hangingPuntuation	boolean	R/W	Roman hanging punctuation
textComposer	TextComposer	R/W	TextComposer.ADOBEEVERYLINE, ADOBESINGLELINE

Warp Properties

Property	Type	R/W	Description
warpStyle	WarpStyle	R/W	WarpStyle.NONE, ARC, ARCH, BULGE, SHELLLOWER, SHELLUPPER, FLAG, WAVE, FISH, RISE, FISHEYE, INFLATE, SQUEEZE, TWIST
warpDirection	Direction	R/W	Direction.HORIZONTAL or Direction.VERTICAL
warpBend	number	R/W	Warp bend -100–100
warpHorizontalDistortion	number	R/W	Horizontal distortion -100–100
warpVerticalDistortion	number	R/W	Vertical distortion -100–100

Photopea Extensions

Property	Type	Description
totalTextStyle	string	JSON string with ALL style parameters of the text
transform	string	JSON array — the affine transform matrix of the text

Methods

Method	Description
convertToShape()	Convert text to a filled shape layer with text as clipping path
createPath()	Create work path from text outlines

Practical examples:

var layer = doc.layers.getByName("Headline");
var text  = layer.textItem;

// Set content
text.contents = "Hello World";

// Style
text.font   = "Verdana-Bold";
text.size   = 72;
text.color.rgb.hexValue = "FF0000";    // red

// Position point text at (50, 100)
text.position = [50, 100];

// Center align
text.justification = Justification.CENTER;

// Paragraph text with bounding box
text.kind   = TextType.PARAGRAPHTEXT;
text.width  = new UnitValue("400 pixels");
text.height = new UnitValue("200 pixels");

// Letter spacing
text.tracking = 100;   // 10% spacing

// Scale text horizontally to 80%
text.horizontalScale = 80;

// Warp arc
text.warpStyle = WarpStyle.ARC;
text.warpBend  = 30;

// Read all text styles as JSON (Photopea extension)
var styles = JSON.parse(text.totalTextStyle);
app.echoToOE(JSON.stringify(styles));

---

Creating a Text Layer from Scratch

app.preferences.rulerUnits = Units.PIXELS;

var layer = doc.artLayers.add();
layer.kind = LayerKind.TEXT;      // Convert blank layer to text
layer.name = "My Title";

var text = layer.textItem;
text.contents      = "Welcome";
text.font          = "ArialMT";
text.size          = 48;
text.justification = Justification.CENTER;
text.position      = [doc.width / 2, 100];

var color = new SolidColor();
color.rgb.red   = 255;
color.rgb.green = 255;
color.rgb.blue  = 255;
text.color = color;

---

SolidColor — Color Object

// RGB (most common in Photopea)
var c = new SolidColor();
c.rgb.red   = 255;      // 0–255
c.rgb.green = 128;
c.rgb.blue  = 0;
c.rgb.hexValue = "FF8000";   // Set via hex string (no #)

// CMYK
var c2 = new SolidColor();
c2.cmyk.cyan    = 0;    // 0–100
c2.cmyk.magenta = 50;
c2.cmyk.yellow  = 100;
c2.cmyk.black   = 0;

// Grayscale
var c3 = new SolidColor();
c3.gray.gray = 50;    // 0–100

// HSB
var c4 = new SolidColor();
c4.hsb.hue        = 30;    // 0–360
c4.hsb.saturation = 100;   // 0–100
c4.hsb.brightness = 100;   // 0–100

// Lab
var c5 = new SolidColor();
c5.lab.l = 50;   // 0–100
c5.lab.a = 20;   // -128–127
c5.lab.b = 40;   // -128–127

// Set as foreground color
app.foregroundColor = c;

// Use with selection fill
doc.selection.selectAll();
doc.selection.fill(c);
doc.selection.deselect();

---

Selection — Selection Object

Access via doc.selection.

Properties

Property	Type	Description
bounds	array	[left, top, right, bottom] bounding rectangle
solid	boolean	Whether selection is a solid rectangle

Methods

Method	Signature	Description
selectAll	()	Select entire document
deselect	()	Remove selection
invert	()	Invert the selection
select	(region, type, feather, antiAlias)	Select polygon region. Region is array of [x,y] points. SelectionType: REPLACE, ADD, SUBTRACT, INTERSECT
feather	(radius)	Feather the selection edges
contract	(radius)	Contract (shrink) selection
expand	(radius)	Expand selection
grow	(tolerance, antiAlias)	Grow selection to similar adjacent pixels
similar	(tolerance, antiAlias)	Select similar pixels throughout document
smooth	(radius)	Smooth selection edges
selectBorder	(width)	Select only the border of the current selection
resize	(widthPct, heightPct, anchor)	Resize selection boundary
rotate	(angle, anchor)	Rotate selection boundary
translate	(deltaX, deltaY)	Move selection boundary
fill	(fillWith, mode, opacity, preserveTransparency)	Fill selection with color or content. fillWith is SolidColor or string
stroke	(strokeColor, width, location, mode, opacity, preserveTransparency)	Stroke selection border. StrokeLocation: INSIDE, OUTSIDE, CENTER
copy	(merged)	Copy selection to clipboard
cut	()	Cut selection to clipboard
clear	()	Delete selection content
load	(from, type, invert)	Load selection from channel
store	(into, type)	Save selection as channel
makeWorkPath	(tolerance)	Convert to work path

Practical examples:

var sel = doc.selection;

// Rectangle select (top-left to bottom-right)
sel.select([[0,0],[500,0],[500,300],[0,300]]);

// Select all
sel.selectAll();

// Add to existing selection
sel.select([[600,0],[900,0],[900,300],[600,300]], SelectionType.ADD);

// Feather 10px
sel.feather(10);

// Contract by 5px
sel.contract(5);

// Fill with red
var red = new SolidColor();
red.rgb.red = 255; red.rgb.green = 0; red.rgb.blue = 0;
sel.fill(red);

// Stroke selection with black, 3px, inside
var black = new SolidColor();
black.rgb.hexValue = "000000";
sel.stroke(black, 3, StrokeLocation.INSIDE);

// Copy, paste as new layer
sel.copy();
doc.paste();

// Invert and delete (remove background)
sel.invert();
sel.clear();
sel.deselect();

---

BlendMode Enum — All Values

Used in layer.blendMode (string form in Photopea) and BlendMode constant (standard):

BlendMode Constant	Photopea String	Name
BlendMode.NORMAL	"norm"	Normal
BlendMode.DISSOLVE	"diss"	Dissolve
BlendMode.DARKEN	"dark"	Darken
BlendMode.MULTIPLY	"mul "	Multiply
BlendMode.COLORBURN	"idiv"	Color Burn
BlendMode.LINEARBURN	"lbrn"	Linear Burn
BlendMode.DARKERCOLOR	"dkCl"	Darker Color
BlendMode.LIGHTEN	"lite"	Lighten
BlendMode.SCREEN	"scrn"	Screen
BlendMode.COLORDODGE	"div "	Color Dodge
BlendMode.LINEARDODGE	"lddg"	Linear Dodge (Add)
BlendMode.LIGHTERCOLOR	"lgCl"	Lighter Color
BlendMode.OVERLAY	"over"	Overlay
BlendMode.SOFTLIGHT	"sLit"	Soft Light
BlendMode.HARDLIGHT	"hLit"	Hard Light
BlendMode.VIVIDLIGHT	"vLit"	Vivid Light
BlendMode.LINEARLIGHT	"lLit"	Linear Light
BlendMode.PINLIGHT	"pLit"	Pin Light
BlendMode.HARDMIX	"hMix"	Hard Mix
BlendMode.DIFFERENCE	"diff"	Difference
BlendMode.EXCLUSION	"smud"	Exclusion
BlendMode.SUBTRACT	"fsub"	Subtract
BlendMode.DIVIDE	"fdiv"	Divide
BlendMode.HUE	"hue "	Hue
BlendMode.SATURATION	"sat "	Saturation
BlendMode.COLOR	"colr"	Color
BlendMode.LUMINOSITY	"lum "	Luminosity
BlendMode.PASSTHROUGH	"pass"	Pass Through (groups only)

// Use either form:
layer.blendMode = BlendMode.SCREEN;     // constant
layer.blendMode = "scrn";               // string (Photopea internal form)

---

LayerKind Enum

Constant	Description
LayerKind.NORMAL	Regular pixel layer
LayerKind.TEXT	Text layer
LayerKind.SMARTOBJECT	Smart Object / linked layer
LayerKind.SOLIDFILL	Solid color fill layer
LayerKind.GRADIENTFILL	Gradient fill layer
LayerKind.PATTERNFILL	Pattern fill layer
LayerKind.BRIGHTNESSCONTRAST	Brightness/Contrast adjustment layer
LayerKind.CURVES	Curves adjustment layer
LayerKind.LEVELS	Levels adjustment layer
LayerKind.HUESATURATION	Hue/Saturation adjustment layer
LayerKind.COLORBALANCE	Color Balance adjustment layer
LayerKind.CHANNELMIXER	Channel Mixer adjustment layer
LayerKind.GRADIENTMAP	Gradient Map adjustment layer
LayerKind.INVERSION	Invert adjustment layer
LayerKind.POSTERIZE	Posterize adjustment layer
LayerKind.THRESHOLD	Threshold adjustment layer
LayerKind.SELECTIVECOLOR	Selective Color adjustment layer
LayerKind.PHOTOFILTER	Photo Filter adjustment layer
LayerKind.EXPOSURE	Exposure adjustment layer
LayerKind.VIBRANCE	Vibrance adjustment layer
LayerKind.COLORLOOKUP	Color Lookup adjustment layer
LayerKind.LAYER3D	3D layer (not generally useful in Photopea)
LayerKind.VIDEO	Video layer

// Identify layer type
var layer = doc.activeLayer;
if (layer.kind === LayerKind.TEXT)         /* text layer */;
if (layer.kind === LayerKind.SMARTOBJECT)  /* smart object */;
if (layer.typename === "LayerSet")         /* group */;

// Filter: collect all text layers recursively
var textLayers = [];
function collectText(parent) {
  for (var i = 0; i < parent.layers.length; i++) {
    var l = parent.layers[i];
    if (l.typename === "LayerSet") collectText(l);
    else if (l.kind === LayerKind.TEXT) textLayers.push(l);
  }
}
collectText(doc);

---

AnchorPosition Enum

Constant	Position
AnchorPosition.TOPLEFT	Top left
AnchorPosition.TOPCENTER	Top center
AnchorPosition.TOPRIGHT	Top right
AnchorPosition.MIDDLELEFT	Middle left
AnchorPosition.MIDDLECENTER	Center
AnchorPosition.MIDDLERIGHT	Middle right
AnchorPosition.BOTTOMLEFT	Bottom left
AnchorPosition.BOTTOMCENTER	Bottom center
AnchorPosition.BOTTOMRIGHT	Bottom right

---

ElementPlacement Enum

Used with layer.move(relativeObject, placement):

Constant	Effect
ElementPlacement.PLACEBEFORE	Above the target layer in the panel
ElementPlacement.PLACEAFTER	Below the target layer in the panel
ElementPlacement.PLACEATBEGINNING	Top of the layer stack
ElementPlacement.PLACEATEND	Bottom of the layer stack
ElementPlacement.INSIDE	Into a LayerSet (makes layer a child)

---

ResampleMethod Enum

Used with doc.resizeImage():

Constant	Description
ResampleMethod.BICUBIC	High quality, good for smooth gradients
ResampleMethod.BICUBICSHARPER	Best for reduction
ResampleMethod.BICUBICSMOOTHER	Best for enlargement
ResampleMethod.BILINEAR	Medium quality
ResampleMethod.NEARESTNEIGHBOR	No anti-aliasing, fastest
ResampleMethod.NONE	No resampling (change resolution only)

---

SaveOptions Enum

Used with doc.close(saveOption):

Constant	Meaning
SaveOptions.DONOTSAVECHANGES	Discard all changes and close
SaveOptions.SAVECHANGES	Save then close
SaveOptions.PROMPTTOSAVECHANGES	Show dialog (may block in headless)

---

ExportOptionsSaveForWeb — Export to Filesystem

Used with doc.exportDocument() to write files that Photopea packages into a ZIP.

// Export PNG
var pngOpts = new ExportOptionsSaveForWeb();
pngOpts.format      = SaveDocumentType.PNG;
pngOpts.PNG8        = false;    // PNG-24
pngOpts.quality     = 100;
pngOpts.transparency = true;
doc.exportDocument(new File("/export.png"), ExportType.SAVEFORWEB, pngOpts);

// Export JPEG
var jpgOpts = new ExportOptionsSaveForWeb();
jpgOpts.format  = SaveDocumentType.JPEG;
jpgOpts.quality = 80;    // 0–100
doc.exportDocument(new File("/export.jpg"), ExportType.SAVEFORWEB, jpgOpts);

// Export GIF
var gifOpts = new ExportOptionsSaveForWeb();
gifOpts.format     = SaveDocumentType.GIF;
gifOpts.colors     = 256;
gifOpts.dither     = 100;
gifOpts.transparency = true;
doc.exportDocument(new File("/export.gif"), ExportType.SAVEFORWEB, gifOpts);

---

executeAction — Advanced Operations

Used for operations not exposed in the standard DOM (adjustments applied as adjustment layers, Smart Object editing, etc.). Takes the Photoshop Action Manager approach.

// Open Smart Object for editing
var l = doc.layers.getByName("SmartObj");
doc.activeLayer = l;
executeAction(stringIDToTypeID("placedLayerEditContents"));
// Smart Object is now the active document
doc.activeLayer.rotate(90);
doc.save();
doc.close();

// Apply Hue/Saturation as destructive adjustment
var desc = new ActionDescriptor();
var list = new ActionList();
var channel = new ActionDescriptor();
channel.putEnumerated(stringIDToTypeID("presetKind"), stringIDToTypeID("presetKindType"), stringIDToTypeID("presetKindDefault"));
channel.putInteger(stringIDToTypeID("hue"),        20);   // hue shift
channel.putInteger(stringIDToTypeID("saturation"), 30);   // saturation
channel.putInteger(stringIDToTypeID("lightness"),  0);
list.putObject(stringIDToTypeID("hueSaturationAdjustmentV2Layer"), channel);
desc.putList(stringIDToTypeID("adjustment"), list);
executeAction(stringIDToTypeID("hueSaturation"), desc, DialogModes.NO);

// Select a layer by name using AM
function selectLayerByName(name) {
  var desc = new ActionDescriptor();
  var ref  = new ActionReference();
  ref.putName(charIDToTypeID("Lyr "), name);
  desc.putReference(charIDToTypeID("null"), ref);
  desc.putBoolean(charIDToTypeID("MkVs"), false);
  executeAction(charIDToTypeID("slct"), desc, DialogModes.NO);
}

---

Complete Practical Script Examples

1. Rename all text layers based on their contents

app.preferences.rulerUnits = Units.PIXELS;
var doc = app.activeDocument;

function processLayers(parent) {
  for (var i = 0; i < parent.layers.length; i++) {
    var l = parent.layers[i];
    if (l.typename === "LayerSet") processLayers(l);
    else if (l.kind === LayerKind.TEXT) {
      l.name = l.textItem.contents.substring(0, 30);
    }
  }
}
processLayers(doc);
app.echoToOE("done");

2. Export each layer as a separate PNG

app.preferences.rulerUnits = Units.PIXELS;
var doc = app.activeDocument;

for (var i = 0; i < doc.layers.length; i++) {
  // Hide all layers
  for (var j = 0; j < doc.layers.length; j++) doc.layers[j].visible = false;
  // Show only this layer
  doc.layers[i].visible = true;
  // Export
  var opts = new ExportOptionsSaveForWeb();
  opts.format  = SaveDocumentType.PNG;
  opts.PNG8    = false;
  opts.quality = 100;
  doc.exportDocument(
    new File("/" + doc.layers[i].name + ".png"),
    ExportType.SAVEFORWEB, opts
  );
}

// Restore visibility
for (var i = 0; i < doc.layers.length; i++) doc.layers[i].visible = true;

3. Find and replace text across all text layers

var searchText   = "2024";
var replaceText  = "2025";

function findReplaceText(parent) {
  for (var i = 0; i < parent.layers.length; i++) {
    var l = parent.layers[i];
    if (l.typename === "LayerSet") findReplaceText(l);
    else if (l.kind === LayerKind.TEXT) {
      var t = l.textItem;
      if (t.contents.indexOf(searchText) !== -1) {
        t.contents = t.contents.split(searchText).join(replaceText);
      }
    }
  }
}
findReplaceText(app.activeDocument);
app.echoToOE("Find & Replace complete");

4. Grid of duplicate layers

app.preferences.rulerUnits = Units.PIXELS;
var doc   = app.activeDocument;
var layer = doc.activeLayer;
var cols  = 4, rows = 3;
var padX  = 20, padY = 20;
var w = layer.bounds[2] - layer.bounds[0];
var h = layer.bounds[3] - layer.bounds[1];

for (var r = 0; r < rows; r++) {
  for (var c = 0; c < cols; c++) {
    if (r === 0 && c === 0) continue; // skip original
    var copy = layer.duplicate();
    var targetX = layer.bounds[0] + c * (w + padX);
    var targetY = layer.bounds[1] + r * (h + padY);
    copy.translate(targetX - copy.bounds[0], targetY - copy.bounds[1]);
    copy.opacity = 100 - (r * cols + c) * 5;
  }
}

5. Apply watermark from URL

app.preferences.rulerUnits = Units.PIXELS;
var doc = app.activeDocument;

// Open watermark as smart object layer
app.open("https://example.com/watermark.png", null, true);
var wm = doc.activeLayer;

// Resize to 20% of document width
var wmW = wm.bounds[2] - wm.bounds[0];
var targetW = doc.width * 0.2;
var scalePct = (targetW / wmW) * 100;
wm.resize(scalePct, scalePct, AnchorPosition.TOPLEFT);

// Move to bottom-right with 20px margin
var wmNewW = wm.bounds[2] - wm.bounds[0];
var wmNewH = wm.bounds[3] - wm.bounds[1];
wm.translate(
  doc.width  - wmNewW - 20 - wm.bounds[0],
  doc.height - wmNewH - 20 - wm.bounds[1]
);
wm.opacity = 60;
app.echoToOE("watermark applied");

6. Get all layer info as JSON

function getLayerInfo(parent, depth) {
  depth = depth || 0;
  var result = [];
  for (var i = 0; i < parent.layers.length; i++) {
    var l = parent.layers[i];
    var info = {
      name:    l.name,
      type:    l.typename,
      visible: l.visible,
      opacity: l.opacity,
      depth:   depth
    };
    if (l.typename === "ArtLayer") {
      info.kind   = l.kind.toString();
      info.bounds = [l.bounds[0], l.bounds[1], l.bounds[2], l.bounds[3]];
      if (l.kind === LayerKind.TEXT) {
        info.text = l.textItem.contents;
        info.font = l.textItem.font;
        info.size = l.textItem.size;
      }
    } else if (l.typename === "LayerSet") {
      info.children = getLayerInfo(l, depth + 1);
    }
    result.push(info);
  }
  return result;
}
app.echoToOE(JSON.stringify(getLayerInfo(app.activeDocument)));

---

Common Mistakes & Gotchas

Problem	Cause	Fix
createEmbed never resolves	Container has no size	Add width + height CSS to the container <div>
runScript returns ["done"] with no data	No echoToOE in script	Add app.echoToOE(value) for anything you want back
result[0] is "done", not the expected value	echoToOE not reached	Check script logic for early exit or errors
Images won't load (network error)	CORS	Server must respond with Access-Control-Allow-Origin: *
openFromURL(url, true) layer not ready	Async loading lag	Use addImageAndWait utility
exportImage only PNG/JPG	exportImage limitation	Use runScript("saveToOE('webp:0.85')") for other formats
Pixel coordinates behave unexpectedly	Wrong ruler units	Always set app.preferences.rulerUnits = Units.PIXELS first
Text size set but looks different	Wrong type units	Set app.preferences.typeUnits = TypeUnits.PIXELS
Layer not found by name	Wrong layer level	Layers are scoped; use recursive search for nested layers
layer.bounds[0] returns a UnitValue, not number	Ruler units issue	Force Units.PIXELS before reading bounds
Smart Object edit hangs	Missing doc.save(); doc.close()	Always save + close when done editing SO
React double-mount in dev	Strict Mode	Use if (peaRef.current) return guard in useEffect

---

Limitations

• This skill covers host-page integration patterns; it does not replace Photopea's own terms, API documentation, or licensing guidance.
• Remote URL loading depends on browser CORS behavior, network availability, and the user's Photopea account/session state.
• runScript executes scripts inside the embedded Photopea document context. Only run scripts you understand and only with user-approved files.
• Serialize dynamic values with JSON.stringify before embedding them in a runScript string. Never concatenate user-provided URLs, layer names, or text directly into Photopea script source.
• Export behavior can vary by document size, browser memory limits, and the formats supported by the active Photopea runtime.

---

Sources

• photopea.js: https://github.com/yikuansun/PhotopeaAPI
• npm: https://www.npmjs.com/package/photopea
• Photopea Live Messaging API: https://www.photopea.com/api/live
• Photopea Script reference: https://www.photopea.com/learn/scripts
• Photoshop JS Scripting reference (compatible): https://theiviaxx.github.io/photoshop-docs/Photoshop/index.html
• Plugin dev gists (addImageAndWait, getDocumentAsImage): https://gist.github.com/yikuansun/c0f1a602b4e9d4e344a41c4f49ded3bf