A free PDF compressor alternative that doesn’t upload your files
Most online PDF compressors upload your file to a server, require a signup, hit you with daily limits, or stamp a watermark on the free tier. Uttir’s PDF Compressor does the same job in your browser, with no upload, no signup, no daily limit, and no watermark.
Quick answer
If you want to compress a PDF for free without uploading it, use Uttir. Drop the file, pick an image quality (or use the default), and download. The file stays on your device, no signup, no limits, no watermark.
Feature comparison
| Feature | Uttir | Smallpdf / iLovePDF |
|---|---|---|
| Lossy + lossless compression | ||
| Drag-and-drop interface | ||
| Bulk processing | ||
| No upload to a server | ||
| No signup | ||
| No daily limit | ||
| No watermarks added | ||
| Adjustable quality target | ||
| Works offline after first load |
What Uttir does differently
- Your file stays on your device. Compression runs in the browser using a JavaScript PDF library. No upload, no waiting, no privacy concern.
- No daily limits. Smallpdf and iLovePDF cap the free tier at 2 tasks per day. Uttir has no such cap.
- No watermark. Some free compressors add a footer or stamp to identify the source. Uttir does not.
- Adjustable quality. Pick a target image quality (high, medium, low) or accept the default.
Try the compressor
Drop a PDF, pick a quality, download. The compressed file lands on your device.
Other Uttir PDF tools
Verify the privacy claim
Open the compressor, open DevTools → Network, upload a PDF. The only network activity is the static page assets. There is no upload of your file. Set the network to Offline and the compressor still works.