MEDIA NO.011
Image Compressor
Compress images to JPEG/WebP locally, pick your quality — files never leave your device.
This tool runs entirely in your browser. Nothing is uploaded to any server.
What is this
什么是图片压缩
压缩通过有损编码（JPEG/WebP）丢弃人眼不敏感的信息来缩小体积。对网站来说，图片通常占页面重量的一半以上——压缩是性价比最高的性能优化。
What is image compression
Lossy codecs (JPEG/WebP) shrink images by discarding detail your eye barely notices. Images are typically half of a page’s weight — compression is the highest-ROI performance work there is.
如何使用
- 拖入或选择一张或多张图片。
- 调整质量滑杆（建议 70-85）与最大宽度限制。
- 逐张对比前后体积，满意后单张或打包下载。
FAQ
Are my images uploaded?
Never. Compression runs in-browser via Canvas and a WASM engine — it works even offline.
JPEG or WebP?
WebP is typically 25-35% smaller at equal quality and works in all modern browsers. Pick JPEG only for very old targets.
Why can PNG grow after compression?
PNG is lossless — great for screenshots and icons, terrible for photos. Re-encode photos to JPEG/WebP for up to 10× savings.