Reduce PDF file size online for free. Standard and aggressive compression modes — all processing in your browser, no upload.
Step-by-step guide to get the most from this tool
Drag and drop or select a PDF file. Original file size is displayed.
Select Standard for quality preservation or Aggressive for maximum size reduction.
Click Compress & Download. See size reduction percentage before saving.
What makes this tool stand out
Standard stream optimization or aggressive JPEG rasterization.
Files processed locally — never uploaded.
See before/after file size and reduction percentage.
No queue, no email — download immediately.
More free utilities you might find useful
Quick answers to common questions
Standard mode re-saves your PDF with optimized object streams. Aggressive mode rasterizes each page to JPEG, significantly reducing file size but may affect text sharpness.
No. All compression happens in your browser using pdf-lib and pdf.js. Your files never leave your device.
Use Standard for documents with text you need to remain sharp. Use Aggressive for scanned PDFs or when maximum size reduction is needed.
Standard compression preserves original quality. Aggressive compression converts pages to images, which may make small text harder to read.
There is no hard limit, but very large PDFs may be slow to process. For best performance, compress files under 50 MB.
Password-protected PDFs cannot be compressed. Remove the password first using a PDF unlock tool.
Results vary. Scanned PDFs often shrink 50-80% with aggressive mode. Text-heavy PDFs see smaller reductions with standard mode.
Yes. Compress unlimited PDFs with no signup, watermarks, or page limits.
Your data is processed entirely in your browser. Nothing is sent to any server.
Select a PDF to compress
Files stay in your browser — never uploaded
Standard re-saves with optimized streams. Aggressive rasterizes pages to JPEG for maximum size reduction (may reduce text quality).