Compress PDF to 500KB
Need a PDF under half a megabyte for a portal or a strict inbox? This tool compresses your document in progressively stronger steps until it fits under 500 KB — all on your device.
100% private: files are processed in your browser and never uploaded to any server.
How it works
- Drop your PDF into the box — the 500 KB target is preset.
- The tool finds the strongest settings that keep the document readable while fitting the limit.
- Download the compressed file and check its final size.
Frequently asked questions
How much quality do I lose at 500 KB?
500 KB is a comfortable target for most documents up to ~15 pages: pages stay crisp at normal reading zoom. Longer or image-heavy documents lose more visible detail.
Does the compressed PDF keep selectable text?
No — target-size compression rasterizes pages to guarantee the limit. If you just want a smaller file with selectable text, use the main Compress PDF tool in smart mode.
Can I compress several PDFs at once?
Yes. Drop multiple files and each is compressed to the target independently, with individual downloads and a ZIP for all of them.
Are my files uploaded?
No. Compression happens entirely in your browser and your documents never leave your device.