Compress PDF to 300KB
Set a strict target size and keep the best readable result. 100% private, no upload.
Popular PDF workflows
Common next steps after hitting a strict file-size limit.
Need this in a production workflow?
Use one-time API credits for automation, or Max for larger files, background jobs, batches, and PDF audio.
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Other free, browser-only PDF tools that pair well with this one.
Frequently asked questions
How do I compress a PDF to 300KB?
Upload your PDF, click the "300 KB" preset, and tap Compress. Our binary-search compressor finds the highest quality that fits under 300KB — entirely in your browser, no upload.
Why would a portal cap uploads at 300KB?
Many Indian government and education portals (NEET, JEE, several state recruitment sites) enforce a 300KB cap on signature, photo, or supporting document uploads. Files above the limit are rejected.
Will my compressed PDF still be readable at 300KB?
Yes for most documents — single-page IDs, signatures, photos, and short application forms compress cleanly. Multi-page or image-heavy PDFs may need a higher target.
Is my PDF safe during compression?
Yes. ExactPDF runs entirely in your browser. The file never leaves your device — verifiable in DevTools → Network.
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