Free · Browser-only · No upload
PDF shrinker - your file, your device.
Compress a PDF without uploading it. Runs entirely in your browser. Smaller file, downloaded straight back to you.
Shrink a PDFWhy browser-only beats SmallPDF
- Privacy: SmallPDF, ILovePDF and Adobe all upload your file. We don't.
- Speed: no upload queue, no waiting your turn. Instant.
- No watermark: the output is clean.
- Bandwidth: works fine on slow connections - only the JS bundle ships, not your file.
FAQ
→How much can you shrink a PDF?
It depends on the file. Image-heavy PDFs shrink the most, because the images are downsampled and re-encoded; text-only PDFs get a smaller structural saving. It is all free, and runs in your browser.
→Will quality drop?
Default Medium mode is lossless for text. Image-heavy compression has Low / Medium / High quality choices - High is visually identical to the source.
→Does my file get uploaded?
No. Everything runs in your browser via WebAssembly. The file never touches our server.
→What's the file size limit?
50 MB on free tier (covers most documents). Pro is unlimited.