Shrink large PDF files for email and uploads. Choose a compression level, keep text sharp and download a smaller PDF without watermarks or signup.
The PDF Compressor shrinks large PDF files so they fit within email attachment limits or upload restrictions, without the file leaving your device. Choose a compression level and the tool re-encodes embedded images to reduce file size while keeping text and vector graphics sharp — the part of a PDF that actually matters for readability.
It's built for the common situation where a scanned report, portfolio or presentation exported as PDF turns out far larger than expected. Because everything runs client-side, there's no waiting for an upload and no risk of a confidential document sitting on someone else's server. Pick a compression level, preview the estimated size reduction, and download a smaller PDF ready for email or a strict upload cap.
Image-heavy PDFs typically shrink by 50–80% because compression targets embedded photos, which are usually the bulk of the file. Text-only documents still compress, just by a smaller margin.
Vector text and line art are untouched by compression, so contracts and reports remain crisp to read even at the most aggressive setting.
There's no signup wall and no watermark stamped on the output — just a smaller version of the file you uploaded.
Light compression trims image quality subtly, best when the PDF will be printed. Medium is a good default for email and general sharing. Aggressive compression produces the smallest file but can introduce visible artefacts in photos, so it suits documents where images are secondary to text.
A PDF made almost entirely of vector text, like a plain Word export, is already small and won't shrink much further regardless of the setting chosen — there simply isn't image data to re-encode.
Acrobat and similar desktop apps offer comparable compression settings but usually require a paid licence for batch or high-volume use. This tool applies the same image re-encoding approach directly in the browser at no cost.
Image-heavy documents typically drop 50–80%. Text-only PDFs are already compact, so expect smaller gains — often 5–20%.
No. Text and vector graphics stay sharp; compression works mainly by re-encoding embedded images, so only photo detail is affected at aggressive settings.
Yes. PDF Compressor on Klipza is completely free with no account, no subscription and no watermark on your files, and there is no daily usage limit.
Processing happens locally in your browser wherever technically possible, so your files are not uploaded to a server, stored or shared with third parties.
Yes. It is fully responsive and runs in any modern browser on Android, iPhone, iPad, Windows and macOS — nothing to install.