为什么值得关注

它集成了异常广泛的压缩和转换工具（包括 HEIC、RAR 解压、字体子集化和目标大小模式），并严格遵守隐私承诺（文件不上传），全部由 WebAssembly 和 WebCodecs 驱动，且可作为离线 PWA 使用。

适合谁使用

需要优化媒体性能的 Web 开发者
处理字体许可限制的设计师
注重隐私的用户
需要快速转换文件而不安装软件的用户

典型使用场景

压缩图片以减少网页加载时间
转换并压缩视频以便社交媒体或邮件分享
子集化字体以遵守 EULA 规定用于网页
无需上传至第三方服务即可提取 RAR/7Z 等存档文件

项目优势

100% 客户端处理确保文件隐私
支持众多格式（图片、视频、PDF、音频、字体、存档）并提供大量转换选项
免费且开源（MIT 协议），提供在线演示
首次缓存编解码器后可离线使用 PWA

使用前须知

部分内置 WASM 引擎采用 copyleft 协议（AGPL/GPL），影响再分发权利
需要支持 WebCodecs 和 WebAssembly 的现代浏览器
较大的 WASM 二进制文件可能导致首次下载较重

README 快速开始

Compress Pro | Private, In-Browser Image, Video, PDF, Audio & Font Compressor

Keywords: image compression • pdf compression • video compression • webp • avif • heic • remove exif • font converter • ttf to woff2 • font subsetting • variable font • webassembly • webcodecs • client-side • private • no upload

🔗 Try it live → compress-pro.com

Compress images, video, audio and PDFs — convert and subset fonts — and strip EXIF, entirely in your browser. No uploads, no ads, no login, nothing stored server-side. Free & open source — files never leave your machine.

👀 Overview

Compress Pro is a free, open-source, private-by-design file compressor. It shrinks images, video, audio and PDFs — converts and subsets fonts (TTF/OTF/WOFF/WOFF2), creates and extracts archives (ZIP, 7Z, TAR, tarballs; opens RAR, ISO, CAB, DEB, RPM and more), and strips EXIF metadata — running entirely in the browser via WebAssembly + WebCodecs. Fonts especially benefit from the privacy angle: they are licensed software most EULAs forbid handing to third-party servers.

The whole app is prerendered and served as static assets, so files never leave the machine. Compression runs in Web Workers, so the UI stays responsive. There are no ads, no login and nothing stored server-side — privacy is the product's core promise and its SEO angle. It deploys to Cloudflare Workers for ~$0/month.

🚀 Features

🖼️ Images — JPG, PNG, WebP, GIF, HEIC, SVG. Squoosh codecs (jSquash): MozJPEG with trellis quantization (3–6% smaller at the same quality), libwebp (effort 6), libavif, oxipng; lossy PNG via libimagequant (icodec, quality 100 stays lossless). Optional max-dimension downscale (Lanczos3) and target-size mode ("fit under 500 KB", binary search).
📄 PDF — Ghostscript 10 in wasm (@okathira/ghostpdl-wasm): explicit DPI + JPEG-quality control, bicubic downsampling, duplicate-image detection, font subsetting, metadata stripping. 5 preset levels or target size ("fit under 2 MB") via binary search over a quality ladder. Before/after page-1 comparison via pdf.js.
🎬 Video — compress and convert MP4/MOV/WebM/MKV via WebCodecs (the browser's

项目描述

Privacy-first file compression in the browser — images, PDF, video, audio & SVG. No uploads, no tracking.

compress-pro