AI Image Generation and Editing
zhayujie/CowAgent
Generates or edits images from text prompts through a Python script that picks an image backend based on which API keys are configured.
Compresses images to WebP by default, or to PNG or JPEG, picking the best available tool on the machine and optionally processing whole folders.
Install Image Compressor
$ npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install JimLiu/baoyu-skills baoyu-compress-image --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/JimLiu/baoyu-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/baoyu-compress-image .claude/skills/baoyu-compress-image && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "baoyu-compress-image" agent skill from https://github.com/JimLiu/baoyu-skills/tree/main/skills/baoyu-compress-image into .claude/skills/baoyu-compress-image/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "baoyu-compress-image", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/JimLiu/baoyu-skills/tree/main/skills/baoyu-compress-imageType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install JimLiu/baoyu-skills baoyu-compress-image --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JimLiu/baoyu-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/baoyu-compress-image .agents/skills/baoyu-compress-image && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "baoyu-compress-image" agent skill from https://github.com/JimLiu/baoyu-skills/tree/main/skills/baoyu-compress-image into .agents/skills/baoyu-compress-image/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "baoyu-compress-image", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install JimLiu/baoyu-skills baoyu-compress-image --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JimLiu/baoyu-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/baoyu-compress-image .cursor/skills/baoyu-compress-image && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "baoyu-compress-image" agent skill from https://github.com/JimLiu/baoyu-skills/tree/main/skills/baoyu-compress-image into .cursor/skills/baoyu-compress-image/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "baoyu-compress-image", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/JimLiu/baoyu-skills.git --path skills/baoyu-compress-image--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install JimLiu/baoyu-skills baoyu-compress-image --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JimLiu/baoyu-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/baoyu-compress-image .gemini/skills/baoyu-compress-image && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "baoyu-compress-image" agent skill from https://github.com/JimLiu/baoyu-skills/tree/main/skills/baoyu-compress-image into .gemini/skills/baoyu-compress-image/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "baoyu-compress-image", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install JimLiu/baoyu-skills baoyu-compress-imageInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/JimLiu/baoyu-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/baoyu-compress-image .github/skills/baoyu-compress-image && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "baoyu-compress-image" agent skill from https://github.com/JimLiu/baoyu-skills/tree/main/skills/baoyu-compress-image into .github/skills/baoyu-compress-image/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "baoyu-compress-image", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install JimLiu/baoyu-skills baoyu-compress-image --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JimLiu/baoyu-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/baoyu-compress-image .opencode/skills/baoyu-compress-image && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "baoyu-compress-image" agent skill from https://github.com/JimLiu/baoyu-skills/tree/main/skills/baoyu-compress-image into .opencode/skills/baoyu-compress-image/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "baoyu-compress-image", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
baoyu-compress-image- GitHub stars
- 27k
- Used in
- 5 other repos
- Token cost
- ~598 tokens
- SKILL.md length
- 151 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 22
- Repo updated
- First seen
- Licence
- MIT
At a glance
Compresses images to WebP by default, or to PNG or JPEG, picking the best available tool on the machine and optionally processing whole folders.
- Reducing the file size of images before publishing a site or post
- SKILL.md covers Script Directory, Preferences (EXTEND.md), Usage and Options, plus 2 more sections
- Runs TypeScript scripts from its folder; calls npx
- Converting PNG or JPEG files to WebP
What it does
The agent runs a TypeScript script, `scripts/main.ts`, on a single file or a directory, launching it with bun or with `npx -y bun`. It uses the first compression tool it finds in this order: sips, cwebp, ImageMagick, then Sharp. Output defaults to WebP at quality 80, and the original is replaced unless you ask to keep it.
Options set the output path, the format (webp, png or jpeg), quality from 0 to 100, recursion into subfolders and JSON output. The result is printed as a line showing the size before and after. Defaults for format, quality and keeping the original can be stored in an `EXTEND.md` file at project level, in the XDG config folder or in the home directory, and the first one found wins.
When your agent uses it
- Reducing the file size of images before publishing a site or post
- Converting PNG or JPEG files to WebP
- Batch-compressing a whole folder of screenshots
Example prompts
- “Compress every PNG in ./public/images to WebP and keep the originals.”
- “Optimize hero.png and show me how much smaller it got.”
- “Convert everything in ./screenshots to JPEG at a lower quality, including subfolders.”
Requirements
- bun, or `npx` to launch it
- One of sips, cwebp, ImageMagick or Sharp
What it can do on your machine
Read from SKILL.md and the folder at commit 1567581. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (TypeScript), which the agent can run.
Shell commands in SKILL.md call:
npx
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Image Compressor loads about 598 tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 151 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from JimLiu/baoyu-skills at commit 1567581, republished under its MIT licence (© JimLiu). 151 words, ~598 tokens.
Download SKILL.mdSave it as
.claude/skills/baoyu-compress-image/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- baoyu-compress-image
- description
- Compresses images to WebP (default) or PNG with automatic tool selection. Use when user asks to "compress image", "optimize image", "convert to webp", or reduce image file size.
- version
- 1.56.1
Image Compressor
Compresses images using best available tool (sips → cwebp → ImageMagick → Sharp).
Script Directory
Scripts in scripts/ subdirectory. {baseDir} = this SKILL.md's directory path. Resolve ${BUN_X} runtime: if bun installed → bun; if npx available → npx -y bun; else suggest installing bun. Replace {baseDir} and ${BUN_X} with actual values.
| Script | Purpose |
|---|---|
scripts/main.ts | Image compression CLI |
Preferences (EXTEND.md)
Check EXTEND.md in priority order — the first one found wins:
| Priority | Path | Scope |
|---|---|---|
| 1 | .baoyu-skills/baoyu-compress-image/EXTEND.md | Project |
| 2 | ${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-compress-image/EXTEND.md | XDG |
| 3 | $HOME/.baoyu-skills/baoyu-compress-image/EXTEND.md | User home |
If none found, use defaults.
EXTEND.md supports: Default format, default quality, keep-original preference.
Usage
${BUN_X} {baseDir}/scripts/main.ts <input> [options]Options
| Option | Short | Description | Default |
|---|---|---|---|
<input> | File or directory | Required | |
--output | -o | Output path | Same path, new ext |
--format | -f | webp, png, jpeg | webp |
--quality | -q | Quality 0-100 | 80 |
--keep | -k | Keep original | false |
--recursive | -r | Process subdirs | false |
--json | JSON output | false |
Examples
# Single file → WebP (replaces original)
${BUN_X} {baseDir}/scripts/main.ts image.png
# Keep PNG format
${BUN_X} {baseDir}/scripts/main.ts image.png -f png --keep
# Directory recursive
${BUN_X} {baseDir}/scripts/main.ts ./images/ -r -q 75
# JSON output
${BUN_X} {baseDir}/scripts/main.ts image.png --jsonOutput:
image.png → image.webp (245KB → 89KB, 64% reduction)Extension Support
Custom configurations via EXTEND.md. See Preferences section for paths and supported options.
© JimLiu, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (scripts) in skills/baoyu-compress-image of JimLiu/baoyu-skills.
- SKILL.md
- scripts/main.ts
Open the folder on GitHubat commit 1567581
Used in 5 other repositories
We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 5 other GitHub owners. This page covers the copy in JimLiu/baoyu-skills, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Image Compressor next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Image Compressor this skillJimLiu/baoyu-skills | 27k | 5 repos | ~598 | Automated safety check: Pass | MIT | |
| AI Image Generation and Editingzhayujie/CowAgent | 47k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Generate Imageynulihao/AgentSkillOS | 618 | 10 repos | ~1.7k | Automated safety check: Notes | None | |
| GPT Image Generation CLIwuyoscar/GPT-Image2-Skill | 5.7k | — | ~2.5k | Automated safety check: Notes | MIT | |
| HyperFrames Media Useheygen-com/hyperframes | 60k | — | ~2.4k | Automated safety check: Pass | Apache-2.0 | |
| Media Useedenfunf/reelmimic | 1.9k | 1 repos | ~2k | Automated safety check: Pass | MIT |
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ynulihao/AgentSkillOS
Generate or edit images using AI models (FLUX, Gemini). An agent skill from ynulihao/AgentSkillOS.
GPT Image Generation CLI
wuyoscar/GPT-Image2-Skill
Generates and edits images with GPT Image 2 or 2.5 through a packaged CLI and a prompt gallery, after settling which model fits the request.
HyperFrames Media Use
heygen-com/hyperframes
Finds, generates and edits media for HyperFrames video projects: music, sound effects, images, icons, logos, voiceovers, captions and color grades.
Media Use
edenfunf/reelmimic
Agent Media OS, the single skill for every media need in a HyperFrames project.
Gemini Watermark Remover
GargantuaX/gemini-watermark-remover
Removes visible Gemini watermarks from local image files by running the project's bundled Node script and saving the cleaned copies to a chosen output location.
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Related
Categories
Questions about Image Compressor
What does Image Compressor do?
Compresses images to WebP by default, or to PNG or JPEG, picking the best available tool on the machine and optionally processing whole folders. ts`, on a single file or a directory, launching it with bun or with `npx -y bun`. It uses the first compression tool it finds in this order: sips, cwebp, ImageMagick, then Sharp.
When should I use Image Compressor?
Image Compressor fits situations like: reducing the file size of images before publishing a site or post; converting PNG or JPEG files to WebP; batch-compressing a whole folder of screenshots.
How do I install Image Compressor in Claude Code?
Run `npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a claude-code`. Or copy the skill folder (skills/baoyu-compress-image in JimLiu/baoyu-skills) into .claude/skills/baoyu-compress-image in your project. Claude Code loads it when a task matches its description.
How do I install Image Compressor in Codex?
Run `npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a codex`. Or copy the skill folder (skills/baoyu-compress-image in JimLiu/baoyu-skills) into .agents/skills/baoyu-compress-image in your project. Codex loads it when a task matches its description.
Can I use Image Compressor in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add JimLiu/baoyu-skills --skill baoyu-compress-image -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/baoyu-compress-image, .gemini/skills/baoyu-compress-image, .github/skills/baoyu-compress-image and .opencode/skills/baoyu-compress-image in your project.
What does Image Compressor need to run?
Going by SKILL.md and its folder, Image Compressor needs TypeScript for the scripts in its folder and the command-line tools its instructions call (npx). Our summary lists: bun, or `npx` to launch it; One of sips, cwebp, ImageMagick or Sharp.
Does Image Compressor access the network?
SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Image Compressor safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Image Compressor use?
Image Compressor is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Image Compressor use?
About 598 tokens (SKILL.md is roughly 2.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Image Compressor?
Skills that share tags, products or a category with Image Compressor: AI Image Generation and Editing (zhayujie/CowAgent, 47k stars), Generate Image (ynulihao/AgentSkillOS, 618 stars), GPT Image Generation CLI (wuyoscar/GPT-Image2-Skill, 5.7k stars) and HyperFrames Media Use (heygen-com/hyperframes, 60k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Image Compressor?
JimLiu (a GitHub user) maintains it in JimLiu/baoyu-skills, which has 26,507 GitHub stars. The repository holds 22 skills in this directory. The repository was last updated on September 10, 2026.
Source: JimLiu/baoyu-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.