Compress PDF to 100 KB
Compress any PDF to under 100 KB for government forms, signature fields, and strict portal uploads. Our engine dials in on the exact target. Free, no signup.
Many government forms and signature fields require files under 100 KB.
Drop a PDF here or click to browse
PDFs up to 50 MB · Stays on your device
Your files stay on your device
Processed in your browser. Nothing uploaded, nothing stored.
The 100 KB threshold is one of the strictest upload limits on the web. It shows up on digital-signature fields, stamp-sized photo requirements, and a handful of government forms that were built for low-bandwidth environments.
Scanned documents typically start at 2–5 MB per page, so reaching 100 KB means significant compression. Our size-aware engine tunes resolution and quality together to lock onto your target — prioritising text legibility over raw size.
Typical documents needing 100 KB compression:
- Digital signature image uploads - Small supporting documents for government forms - Thumbnail-quality document previews - Profile photo attachments in PDF format
How to compress your PDF to 100 KB:
1. Drop your PDF file above or tap to select it 2. The target is pre-filled to 100 KB — adjust if needed 3. The tool runs multiple compression passes to hit the target 4. Download the compressed file
If your document can't reach 100 KB without making text unreadable, the tool tells you the smallest achievable size instead of pretending. Consider splitting the document first or removing unnecessary pages.
Portal file-size limits verified as of July 2025. Always double-check the official portal for current limits.