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Strict mail servers bounce attachments over a few kilobytes. Crafex shrinks your PDF to 20KB in the browser — 100% client-side WASM processing, zero-server, 100% private — so the email lands.
20KB suits strict mail servers and govt email gateway limits.
100% Safe & Private – files never leave your browser
Browser-based compression via pdf-lib. No upload, no sign-up, instant.
or click to browse from your device
Single or multiple PDFs • No file size limit • No signup
Tip: For 20KB, try Medium first — switch to High if still over limit. All processing stays in your browser.
20KB works for text-only pages — split to the page you must send.
High preset gives the smallest output with readable text.
Check the badge before attaching; re-run if it is over.
Your Target
20KB
Fits most portals & email
Recommended Quality
Medium
Switch levels in widget until size fits
Privacy
100% Browser-Based
Files never leave your device
Everything for compress pdf to 20kb for email with Crafex.
Yes — some corporate and govt mail servers cap attachments in the 20KB range; compressing to 20KB clears them.
100% private — 100% client-side WASM processing, zero-server, nothing is uploaded.
Free, unlimited, no sign-up, no watermark.
Explore other size & exam-specific compressors — all private, same instant widget.
© 2026 Crafex — Compress PDFs locally in your browser. Instant, private, free forever.