Reduce PDF file size instantly in your browser. Remove redundant data, optimize streams, shrink images — all without uploading your file to any server.
No Upload
Up to 80% Smaller
Instant
Private
Compress PDF
Reduce PDF file size while maintaining readability — no quality settings needed
Select PDF to Compress
Drop PDF here or click to browse
PDF files up to several GB (limited by browser RAM)
Compression Level
—
Original Size
—
Compressed Size
—
Size Reduction
Compression removes redundant data, optimizes streams, and removes embedded thumbnails and metadata. All text remains fully selectable and searchable.
Compressing...
FAQ
Frequently Asked Questions
Results vary by content. PDFs with many images compress dramatically (40-80%). Text-heavy PDFs may see 10-30% reduction. Already-compressed PDFs may see minimal change.
No. Text in PDFs is stored as vectors and is not affected by compression. Only embedded image quality may be slightly reduced at maximum compression settings.
No server-side limits. Browser RAM is the practical limit — modern devices can handle PDFs up to several gigabytes.
The tool will attempt to load the PDF. If it has an open password, you may need to unlock it first using our Unlock PDF tool.