Compress PDF
Make your PDF smaller — light lossless mode or strong mode.
Browse files
How it works
- Add your PDF file.
- Choose Light (lossless, keeps everything selectable) or Strong (much smaller, pages become images).
- For Strong mode, pick an image quality that fits your needs.
- Compare the before/after sizes and download the compressed file.
Frequently asked questions
How much smaller will my file get?
It depends on the file. Light mode typically saves 5–20% on unoptimized files. Strong mode often cuts 60–90%, especially for scanned documents — at the cost described below.
Will text stay selectable after compression?
In Light mode, yes — everything is preserved. In Strong mode, pages are converted to images, so text is no longer selectable or searchable. Use Strong mode for scans and printouts, Light mode for documents you still need to search or copy text from.
Why did Light mode barely shrink my file?
Some PDFs are already well optimized (for example files exported by modern software). Light mode can only remove structural overhead; it cannot invent savings that are not there. Try Strong mode if you need it smaller.
What quality should I pick in Strong mode?
For screen reading and email, 60–70% JPEG quality at 150 DPI is usually plenty. For printing, keep quality at 85%+ — or use Light mode instead.
Are my files uploaded to a server?
No. Compression happens entirely in your browser.
Can I compress a password-protected PDF?
No — encrypted PDFs are not supported. Remove the password first.
Privacy
Compression runs locally in your browser. Your document never leaves your device, which also means there is no queue and no waiting for a server.
Honest limitations
- Light mode cannot shrink already-optimized files by much.
- Strong mode turns pages into images: text stops being selectable/searchable.
- Strong mode on very long documents can take a while and use significant memory on phones.
- Password-protected PDFs are not supported.