Compress PDF Online — Reduce PDF Size Free
Shrink a large PDF with this free online PDF compressor. It uses a professional Ghostscript engine on our server to intelligently downsample images while keeping your text as real, selectable text — so the file gets much smaller without turning into a blurry picture. Pick a level and download.
Shrinks images, keeps text selectable
Professional Ghostscript compression on our server — text stays selectable, only images are downsampled. Max 25 MB. Your file is deleted immediately after compressing.
How to use Compress PDF
- Select or drop a PDF file.
- Choose a compression level (recommended is a good balance).
- Your smaller PDF downloads automatically.
Why use this free Compress PDF tool?
- 100% free — no sign-up, no watermark and no hidden limits.
- High-quality conversion — a full office engine on our server preserves fonts, tables and layout, including Hindi and other non-Latin scripts.
- Private by design — your file is sent over HTTPS, converted and deleted immediately; it’s never stored, logged or shared.
- Works on any device — runs in any modern browser on desktop, tablet or mobile.
Frequently Asked Questions
How does the compression work?
It uses Ghostscript — the industry-standard PDF engine — to downsample and re-encode images and remove redundant data, while keeping text and vector graphics intact. Your text stays selectable and sharp; only image resolution is reduced.
Will my text stay selectable?
Yes. Unlike simple browser tools that flatten each page into an image, this keeps real text, so you can still select, search and copy from the compressed PDF.
What if my PDF is already small or text-only?
Then there’s little to compress — the tool detects this and simply returns your original file unchanged rather than giving you a larger one.
What happens to my file — is it kept?
No. Your PDF is sent over an encrypted (HTTPS) connection, compressed, and deleted from the server immediately. It is never stored, logged or shared, and there is no sign-up.