Compress PDF
Reduce PDF file size in your browser with balanced or high compression modes, keeping documents private while preparing them for email or upload.
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Select PDF File
You can select a single PDF file
Max file size: 100MB
or drag and drop · press Enter to browse
How to Use
- Upload the PDF you need to compress (scanned invoices, contracts, quotes, dossiers, or commercial proposals — up to 50MB)
- Click "Compress PDF" — pdf-lib and image re-optimization run entirely inside your browser
- The whole process is local, so confidential documents are never uploaded to any server
- You see the before-and-after size so you can decide whether the savings are worth it
- Useful for fitting attachments under Gmail (25MB), corporate mail (often 10MB), tender portals, or government e-filing limits
- Text, hyperlinks, and bookmarks are preserved after compression — full-text search inside the PDF keeps working
All processing is done in your browser, and files are never sent to a server.
Frequently Asked Questions
Compression results vary depending on the content. PDFs with images typically achieve 30-70% size reduction.
Text quality is preserved during compression. The tool primarily optimizes embedded images and removes unnecessary metadata.
No, password-protected PDFs must be unlocked first before compression.
No. Compression happens entirely in your browser via WebAssembly. The file is never transmitted anywhere.
Yes — at the lowest quality setting, embedded images become visibly soft. Use the preview to balance size against visual fidelity.
Digital signatures are invalidated by any byte-level change, including compression. Compress first, then sign.
Yes, AcroForm fields remain interactive. Only embedded raster images and metadata are re-optimized.