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400KB suits multi-page application sets. Medium gives excellent fidelity at 400KB, Low if your original is already ~600KB.
College/LMS portals often 400KB per file.
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Tip: For 400KB, try Medium first — switch to High if still over limit. All processing stays in your browser.
400KB needs less aggressive shrink — Medium preserves tables and seals.
If original is 2MB+, Medium will likely land ~400KB in one pass.
Keep originals — re-try quality without re-scanning.
Your Target
400KB
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 400kb with Crafex.
Yes — Medium at 400KB is near-original, great for certificates with stamps.
No — local only.
No — free, no account.
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