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.
# Convert + resize + custom output
zipic compress --json --level 3 --format webp --width 1920 --output /tmp/out/ /path/photo.png
# Batch a folder
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.
1---2name: zipic3description: 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.4license: MIT5---67# Zipic89Native macOS image compression, 100% local. Drive it via the `zipic` CLI; URL Scheme is a fallback only when the CLI binary isn't installed.1011## Compress1213```bash14zipic compress --json [flags] <files-or-dirs>...15```1617`--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.1819| Need | Flag |20| -------------------------- | ---- |21| Compression level (1–6) | `--level 3` (1 = best quality, 6 = smallest) |22| Convert format | `--format webp` (also `jpeg\|png\|avif\|heic\|jxl`) |23| Cap width | `--width 1920` (aspect kept by default) |24| Custom output directory | `--output /tmp/out/` (auto-sets `--location custom`) |25| Mirror source tree | `--keep-hierarchy` |26| Use a saved preset | `--preset "Web 1x"` (explicit flags override) |27| Keep sources on conversion | `--no-overwrite` (CLI ≥ 0.2.0) or `--output <dir>` (any version) |28| Preview without running | `--dry-run` |2930**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`.3132```bash33# Convert + resize + custom output34zipic compress --json --level 3 --format webp --width 1920 --output /tmp/out/ /path/photo.png3536# Batch a folder37zipic compress --json --format webp --output /tmp/out/ /path/folder38```3940**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.4142For preset / history / dry-run / `pro_required` schema: `reference/cli.md`.4344## When the CLI fails4546If `zipic` isn't on `$PATH`, or exit 65 persists after one retry:4748```bash49bash scripts/detect.sh50```5152Read the `route` field:5354| `route` | Action |55| ---------------- | ------ |56| `cli` | Re-run the CLI; it auto-launches Zipic and waits ~8 s for the socket. |57| `install_cli` | CLI binary missing — tell user: Zipic menu bar → "Install zipic CLI". Use Fallback below for now. |58| `url_scheme` | Zipic < 1.9.5, no CLI exists — tell user to upgrade. Use Fallback below. |59| `halt_no_app` | Zipic not installed — suggest `brew install --cask zipic` or https://zipic.app. |60| `halt_not_macos` | macOS only — suggest ImageMagick / cwebp. |6162## Fallback: URL Scheme6364Only 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`.6566## SVG and presets quick notes6768- **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.69- **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.70- **History** (CLI only): `zipic list --json --limit 20` / `zipic list clear`.7172## Zipic-usage questions7374For 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.
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