| name | zipic |
| description | macOS image compression and Zipic-app expert. Drives the local Zipic.app via its `zipic` CLI (Zipic >= 1.9.5) — structured JSON results, per-file `saved_pct`, exit codes. Falls back to the URL Scheme on older builds.
Supports JPEG, PNG, WebP, HEIC, AVIF, TIFF, ICNS, PDF, GIF, JPEG-XL, SVG. Batch, format conversion, resize, presets, compression history.
MUST use this skill when the user mentions: compress / optimize / shrink image, image too large, batch compress, convert to WebP/AVIF/HEIC/JXL, reduce image size, optimize SVG, minify SVG, preset, compression history. Also: "compress these" / "these images are too big" with image files (incl. SVG) attached.
ALSO use for Zipic-usage Q&A: pricing, Pro features, activation, free-tier limits, troubleshooting, vs ImageOptim/TinyPNG/Squoosh, CLI install, format support, Raycast/Shortcuts integration.
macOS only. Requires Zipic.app.
|
| license | MIT |
| compatibility | macOS only. Requires Zipic.app >= 1.9.5 for CLI; >= 1.9.0 for SVG via URL Scheme. |
| metadata | {"version":"2.1.0","author":"十里 & FRIDAY","homepage":"https://zipic.app","changelog":"./CHANGELOG.md"} |
Zipic
Native macOS image compression, 100% local. Drive it via the zipic CLI; URL Scheme is a fallback only when the CLI binary isn't installed.
Compress
zipic compress --json [flags] <files-or-dirs>...
--json is required — it surfaces per-file output_bytes / saved_pct and lets you map exit code to the failure mode. Pass directories directly; Zipic walks them recursively.
| Need | Flag |
|---|
| Compression level (1–6) | --level 3 (1 = best quality, 6 = smallest) |
| Convert format | --format webp (also jpeg|png|avif|heic|jxl) |
| Cap width | --width 1920 (aspect kept by default) |
| Custom output directory | --output /tmp/out/ (auto-sets --location custom) |
| Mirror source tree | --keep-hierarchy |
| Use a saved preset | --preset "Web 1x" (explicit flags override) |
| Keep sources on conversion | --no-overwrite (CLI ≥ 0.2.0) or --output <dir> (any version) |
| Preview without running | --dry-run |
Source-deletion warning: flags you don't pass inherit from the user's active preset, and overwrite (GUI default ON) means a format conversion landing next to the source with the same base name deletes the source file. When the user didn't ask to replace sources: pass --no-overwrite (CLI ≥ 0.2.0, check zipic --version), or write to a separate --output dir — safe on every version. --dry-run --json echoes the effective value at data.plan.option.overwrite. On CLI 0.1.0 there is no reliable off switch (--no-overwrite is unknown and swallows the next argument) — use the --output route. Full contract: reference/cli.md.
zipic compress --json --level 3 --format webp --width 1920 --output /tmp/out/ /path/photo.png
zipic compress --json --format webp --output /tmp/out/ /path/folder
Exit codes: 0 ok / 1 runtime — read error.code from JSON / 64 bad args / 65 Zipic.app not running. pro_required (free tier hits AVIF/JXL output, SVG/APNG/AVIF/TIFF/ICNS/JXL input, daily quota, or >1 preset) returns a structured error with data.purchase_url and data.trial_available — surface those, don't bypass.
For preset / history / dry-run / pro_required schema: reference/cli.md.
When the CLI fails
If zipic isn't on $PATH, or exit 65 persists after one retry:
bash scripts/detect.sh
Read the route field:
route | Action |
|---|
cli | Re-run the CLI; it auto-launches Zipic and waits ~8 s for the socket. |
install_cli | CLI binary missing — tell user: Zipic menu bar → "Install zipic CLI". Use Fallback below for now. |
url_scheme | Zipic < 1.9.5, no CLI exists — tell user to upgrade. Use Fallback below. |
halt_no_app | Zipic not installed — suggest brew install --cask zipic or https://zipic.app. |
halt_not_macos | macOS only — suggest ImageMagick / cwebp. |
Fallback: URL Scheme
Only when route is install_cli or url_scheme. URL Scheme is fire-and-forget — no JSON, no exit code. Parameter names differ from the CLI (e.g. --output → directory=, --keep-aspect → ratio=). Load reference/url-scheme.md before constructing the URL — don't translate flags from memory; saveLocation= is a common invented param that doesn't exist (it's directory=). Verify outputs with ls -lh after open.
SVG and presets quick notes
- SVG optimization (Pro, Zipic ≥ 1.9.0): pass
.svg files like any other input. Output stays SVG — never set --format on SVG. Level 1–2 conservative, 3–4 balanced, 5–6 may simplify paths visibly.
- Presets (CLI only):
zipic preset list --json, zipic preset show "<name>" --json, zipic preset create --name "Web 2x" --level 3 --format webp --width 2400. zipic preset set-default "<name>" (CLI ≥ 0.2.0) selects the active preset — the baseline a flag-less compress inherits. Free users may keep at most 1 custom preset.
- History (CLI only):
zipic list --json --limit 20 / zipic list clear.
Zipic-usage questions
For pricing, Pro features, troubleshooting, activation, comparisons, etc. — load reference/resources.md. It indexes https://zipic.app, https://docs.zipic.app, the AI-friendly index at https://zipic.app/llms.txt, and per-topic deep links (incl. Chinese mirrors). Fetch the canonical page; don't guess.
