Compress PDF
Reduce PDF file size directly in your browser. Choose quality level, preview the result and download — your file never leaves your device.
Runs entirely in your browser — no uploadsAbout this tool
Compress PDF reduces file size by re-rendering each page at an optimized resolution and rebuilding the PDF from those images. Text-heavy documents often shrink dramatically when scanned at high DPI.
Honest limitation: this method converts pages to images, so selectable text becomes part of the picture. It works best on scans, presentations and image-heavy PDFs. For text PDFs that barely compress, try the High quality setting to keep pages crisp.
FAQ
Why does my text become non-selectable?
Compression rasterizes pages into optimized images, which is how the size reduction is achieved without a server-side engine. Use High quality for the least noticeable change.
Which quality should I choose?
High suits archiving and printing, Medium is a good balance for email attachments, Low maximizes savings for previews.
Will compression ever make my file bigger?
It can, if the original already uses aggressive image compression. Always compare the reported before/after sizes before downloading.