Compress PDF Online
Reduce PDF file size without re-printing. Remove metadata and optimize streams — 100% in your browser.
Drag & Drop PDF here
or click to browse · Max 50MB
Compression Engine
pdf-libUp to 40%
Smaller PDF
Metadata
Stripped
100%
Private
100% Private
Your PDF never leaves your browser. No uploads, no servers.
Metadata Stripped
Hidden author data, creation dates, and software info removed.
No Registration
No sign-up, no account, no limits. Just compress and download.
Knowledge Base
Frequently Asked Questions
How much can I compress a PDF?↓
Compression is most effective on PDFs with embedded images. Text-only PDFs may only reduce by 5-10%. Image-heavy PDFs can reduce by 30-60%.
Does PDF compression reduce document quality?↓
Metadata removal and stream optimization are lossless. Image compression within PDFs reduces visual quality slightly depending on compression level.
Why is my PDF still large after compression?↓
PDFs with scanned images, embedded fonts, or CAD drawings cannot compress as efficiently. Consider reducing image resolution before creating the PDF.
Is PDF compression free with no file size limits?↓
Yes, completely free. Processing uses pdf-lib running in your browser. No files are uploaded and there are no file size restrictions.