Compress PDF to 400 KB
Fit your document under the 400 KB limit that some visa and insurance portals set for supporting documents.
Files are optimized losslessly when possible. To guarantee an exact size, larger files are converted to images, which can soften text and remove the selectable text layer.
How it works
- Step 1
Drop in your PDF. It stays on your device.
- Step 2
Pick a target size (or type a custom KB value).
- Step 3
Download a PDF compressed to your target in seconds.
Why compress a PDF to 400 KB?
- Visa supporting documents capped at 400 KB per file
- Insurance claim and policy document uploads
- Multi-page scans that need to stay under 400 KB
Compress to another size
Popular uses for 400 KB
Frequently asked questions
Are my files uploaded to a server?
No. Compression runs entirely in your browser using WebAssembly. Your PDF never leaves your device, which makes this safe for KYC, banking, and government documents.
How do you hit exactly 400 KB?
We re-encode each page as an image and search across quality and resolution settings until the rebuilt PDF lands at or just under 400 KB, keeping the best quality that still fits.
Is it really free with no watermark?
Yes. No sign-in, no per-hour task caps, no watermark, and no file-count limits, unlike most incumbents.
Will the text stay selectable?
When the file already fits or can be optimized losslessly, text stays sharp and selectable. To guarantee a smaller exact size we rasterize the pages, which is exactly what portal uploads need. If you need selectable text, keep your original.