Choose your PDF.
Open Fold — Smart PDF Compressor from Chrome’s toolbar. Select a PDF and choose 500 KB, 1 MB, 2 MB, or a custom target.
fold.SMART PDF COMPRESSORPDF Compressor.
In your browser.
PDF, made to fit. Less file. More possibility.Reduce PDF file size locally with Fold, a smart PDF compressor available as a web app and Chrome extension. Choose a target, compare the result, and download when you’re happy. Your files stay on your device.
Use Fold in your browser ↗No installation needed. Use a modern desktop browser. The Chrome extension requires Chrome 130 or later.
Choose. Compress. Compare.
Find the right balance.
The tool first optimizes PDF structure. Image compression is optional and requires you to opt in because it changes page content into images.
Check before you save.
Compare any page at fit, 150%, or 200% zoom. Check the actual output size, then download the result yourself.
USEFUL LIMITS TO KNOWA target.
A target.
Not a guarantee.
Some PDFs are already well compressed. The extension offers the smallest tested result, even if it cannot reach your target, and does not deliberately offer a file larger than your original.
Encrypted PDFs are unsupported. Files above 100 MB are rejected; large documents can still require substantial memory. Targets use decimal units: 1 KB = 1,000 bytes.
Keep the original.
Inspect the result.
Image compression is lossy. Flattening removes selectable text, links, form interactivity, accessibility structure, and digital signatures. Even structural rewrites can invalidate cryptographic signatures. Review the output before using it, and keep your original PDF.
Your PDF stays on your device.
Both the web workspace and extension process PDF contents locally. The current extension source includes no uploads, analytics, remote scripts, accounts, host permissions, or background file storage. Files remain in the workspace tab until you close it or choose another PDF. Downloaded copies remain on your device until you delete them.
PDF rendering resources are bundled locally. The website’s browsing practices are described in our privacy policy.
Need a smaller file?
Why did my PDF miss the target size?
The target is not always achievable. Try optional image compression only if its quality and document-feature trade-offs suit your file. Compare the output before downloading.
Why is text no longer selectable?
Optional image compression rasterizes pages. Use a structural-only result or retain the original if you need text, forms, links, or accessibility features.
Why will my file not open?
Encrypted PDFs and files larger than 100 MB are unsupported. Reload the extension, close old workspace tabs, and open it again. Keep your original and try a smaller, unencrypted test file.
How do I report a problem?
Use the developer contact on the extension’s Chrome Web Store listing when available. Include the extension version, Chrome version, file size, and steps to reproduce. Do not send private PDFs or sensitive document content.