Compress PDF to 50 KB
Hit the strictest 50 KB PDF cap used by legacy government portals — in-browser, no upload.
- Runs in your browser
- No upload on server
- Free, forever
- Add PDF
- Adjust
- Download
Hit 50 KB in three steps
- Open the PDF Compressor.
- Drop your PDF. Pick Custom — DPI 72, quality 55%.
- If still over 50 KB, drop quality to 45% and re-export.
How this works — and why it's private
- 50 KB leaves almost no room for embedded fonts or high-resolution scans — expect visible compression on colour images.
- Single-page text certificates, signatures and forms fit comfortably.
- Bluebird's compressor rasterises pages at low DPI, re-encodes JPEGs, and drops unused fonts — all in your browser.
Why 50 KB is the hardest target
Nearby size targets
- Compress PDF to 100 KB — more common government cap.
- Compress PDF to 200 KB — exam and scholarship forms.
- Full PDF Compressor — pick any DPI and quality.
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