Compare · ThriftyPDF
Best free PDF compressor (2026 guide)
Judge compressors by honesty: do they explain quality loss? ThriftyPDF raster-compresses in-browser and tells you when output grows.
Try it here
Open full tool pageProcessed in your browser — not uploaded to our servers.
Honest limits: we re-render pages as JPEG. Best for scans/image-heavy PDFs. Text-only files may get larger or look softer.
Steps
- Test with a scanned PDF and a text PDF.
- Keep the original if size increases.
- Prefer no-upload or fast deletion.
- Upgrade only for stubborn large jobs.
FAQ
Lossless free compressors?
Often minimal gains on scans.
Our method?
JPEG re-render—great for scans, mixed for text.
Rankings paid?
No paid placements on this page.