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350KB target — safely under 500KB portals. Medium usually yields 320–370KB. 100% private, free.
For to 350kb — 350KB.
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 350KB, try Medium first — switch to High if still over limit. All processing stays in your browser.
350KB is safely under most 500KB portals.
Medium preserves text and seals at this size.
Batch compress for exam forms.
Your Target
350KB
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 350kb with Crafex.
Yes — 150KB buffer under 500KB cap.
Free, unlimited.
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