Image Compress
Documentsimage-compressImage Compress is an Agent Skill for documents published in the dongsheng123132/u-claw repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.
图片压缩/转换 - 批量压缩、改尺寸、转格式(jpg/png/webp),本地处理不失隐私
QUICK START
How to use this skill
Bring this guide into your coding agent with a prompt tailored to the tool you use.
- Open your project in Codex.
- Copy and paste the prompt below.
- Review files and risks before approving any action.
Prompt to paste
Inspect the Agent Skill at https://github.com/dongsheng123132/u-claw/blob/HEAD/portable/skills-cn/image-compress/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/image-compress, but wait for my approval before writing files or running scripts.
Copying this prompt does not install or run the skill. Review third-party files before use.
图片压缩 / 转换
帮用户压缩图片体积、调整尺寸、转换格式,全部本地处理,照片不外传。
能力概述
- 压缩:降低体积(控制质量/分辨率),适合发邮件、传微信
- 改尺寸:按宽高或百分比缩放
- 转格式:jpg / png / webp 互转(webp 体积最小)
- 批量:处理整个文件夹
操作方式
用 Bash 工具,Python 的 Pillow 库(跨平台、纯本地):
python -c "import PIL" 2>/dev/null || pip install -q Pillow
# 单张压缩(质量 75,宽度限制 1600px 等比缩放)
python - <<'PY'
from PIL import Image
im = Image.open("input.jpg")
if im.width > 1600:
im = im.resize((1600, int(im.height*1600/im.width)))
im.convert("RGB").save("output.jpg", "JPEG", quality=75, optimize=True)
print("已压缩 -> output.jpg")
PY
# 批量:当前目录所有 jpg/png -> webp(体积更小)
python - <<'PY'
from PIL import Image
import glob, os
for f in glob.glob("*.jpg") + glob.glob("*.png"):
out = os.path.splitext(f)[0] + ".webp"
Image.open(f).save(out, "WEBP", quality=80)
print(f"{f} -> {out}")
PY
使用建议
- 处理前
ls -lh看原图体积,处理后再ls -lh对比,告诉用户压缩了多少 - 默认不覆盖原图(输出新文件名),除非用户明确要求覆盖
- 含透明通道的 PNG 转 JPG 会丢透明,转 webp 可保留——按需选格式