Honest limitation: this re-encodes structure (object-stream compression). It does not down-sample embedded images or remove fonts. For heavy compression of image-heavy PDFs, a server-side tool like Ghostscript is more aggressive.
About this tool
How to use it
- Use the controls above to set your inputs.
- The result updates as you type or interact.
- Copy or download when ready.
Why it lives here
Everything runs in your browser. No account, no ads, no tracking, and no upload.