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Generate ASCII art from images or text using shape vector rendering. Creates sharp-edged ASCII art banners, converts photos to terminal art, and renders text with customizable fonts.
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| name | ascii-renderer |
| description | Generate ASCII art from images or text using shape vector rendering. Creates sharp-edged ASCII art banners, converts photos to terminal art, and renders text with customizable fonts. |
Convert images or text to ASCII art using the shape vector algorithm - a technique that produces sharp edges instead of blurry pixelated results.
Based on Alex Harri's ASCII rendering research.
Activate this skill when:
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# Basic text banner
bun run scripts/render.ts --text "DUPE.COM"
# Filled letters (inverted)
bun run scripts/render.ts --text "HELLO" --invert --cols 80
# Custom font and size
bun run scripts/render.ts --text "WOW" --font "Impact" --cols 60 --rows 12
# Convert image
bun run scripts/render.ts photo.png --cols 80 --rows 40
# Demo sphere (no image needed)
bun run scripts/render.ts --demo
| Option | Short | Default | Description |
|---|---|---|---|
--text | -t | - | Text to render as ASCII art |
--cols | -c | 80 | Output width in characters |
--rows | -r | auto | Output height (auto-calculated for text) |
--invert | -i | false | Invert colors (filled vs outlined) |
--font | -f | Arial Black | Font for text rendering |
--contrast | - | 1.5 | Contrast enhancement (higher = sharper) |
--demo | -d | false | Render demo sphere |
--help | -h | - | Show help |
bun run scripts/render.ts --text "DUPE" --cols 60
@@@@@TTTTTTTT@@@@TTT@@@@TTT@@FTTTTTTT#@@FTTTTTTTT%@@@@@
@@@@@ `#@@ #@@@ #@i ,w: %@i ,;;;;;]@@@@@
@@@@@ ]@@i `@@ #@@@ #@i `@@i ]@i J@@@@@@@@@@@
@@@@@ ]@@D @@ #@@@ #@i `T^ W@i @@@@@@
@@@@@ ]@@P @@ #@@@ #@i ,cssw#@@i ,=====@@@@@@
@@@@@ J#P' s@@. J#@t ,@@i `@@@@@@@i `@@@###@@@@@
@@@@@ ,@@@W. ,W@@i `@@@@@@@i ]@@@@@
@@@@@=======#@@@@@@==www=@@@@#===@@@@@@@#========#@@@@@
bun run scripts/render.ts --text "DUPE" --cols 60 --invert
=======w: a=== a=== a======ww ,=========:
@@@P#@@@w &@@@ J@@@ ]@@@PP#@@# `@@@@PPPPP'
@@@i `@@@i &@@D J@@@ ]@@@,,W@@@ ,@@@lwwwwc
@@@i @@@i &@@D ]@@@ ]@@@@@@@P' `@@@@PPPPP
@@@l,;w@@@' ]@@@c.,W@@@ ]@@@ ,@@@l.,.,..
@@@@@@@@P' T@@@@@@@P' ]@@@ `@@@@@@@@@i
Traditional ASCII converters map pixel brightness → single character. This creates blurry results.
Shape vectors capture character geometry using 6 sampling regions per cell:
┌─────────────┐
│ ●₀ ●₁ │ ← Top samples
│ ●₂ ●₃ │ ← Middle samples
│ ●₄ ●₅ │ ← Bottom samples
└─────────────┘
Each ASCII character has a unique 6D "shape signature". The algorithm finds the best-matching character for each image cell based on geometric similarity, not just brightness.
This produces sharp edges that follow the actual boundaries in the image.
sharp for image processingbun add sharp
Font availability depends on your system. Common options: