Lossless File Compressor — Compress Files With No Quality Loss
Compress files losslessly in your browser. Shrink PNG, SVG, and ZIP with zero data loss — the output is identical to the original. Free, private, no upload.
Drop your PNG, SVG, or ZIP here, or click to browse
文件在浏览器中处理 —— 不会上传任何内容。
What is a lossless file compressor?
这是什么
A lossless file compressor reduces file size without removing any data, so the output is byte-for-byte identical to the original. PNG images, SVG graphics, and ZIP archives all use lossless methods.
filecompressor.app applies lossless optimization in your browser — stripping metadata, re-encoding efficiently, and removing redundancy — with no sign-up and no uploads.
How to compress a file losslessly
使用方法
Lossless compression is instant and safe:
- 1
Drop your PNG, SVG, or ZIP file into the dropzone above, or click to browse.
- 2
The compressor removes redundant data and re-encodes efficiently without discarding anything, then shows the new size.
- 3
Click Download to save the smaller file. It is identical in content to the original.
Why use lossless compression?
为什么使用
Zero quality loss — the output is identical to the original.
100% private — files are processed in your browser and never uploaded.
Free with no sign-up, no watermarks, and no limits.
Works on PNG, SVG, and ZIP, the main lossless formats.
Safe for archival and professional use where quality matters.
FAQ
关于此压缩工具的常见问题。
常见问题
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