Compress PDF to 100KB
Shrink a PDF down to under 100 KB — for strict portal and form upload limits.
Select a PDF to compress
Click to choose, or drop a file here
How to Compress PDF to 100KB
- 1
Add your PDF
Drop in the file that's over the limit.
- 2
Compress to 100 KB
It steps through smaller image quality and resolution until it fits, or gets as close as it can.
- 3
Download
Save the compressed PDF, ready to upload.
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Compress PDF to 100KB — frequently asked questions
Will 100 KB always be possible?+
Not always. A short, mostly-text PDF gets there easily. A long, image-heavy or scanned document may not fit without unreadable quality loss — the tool tells you honestly if it couldn't hit the target.
Will the text still be readable?+
Yes — text stays selectable and sharp far longer than images do, since the compression works by re-rendering and shrinking page images, not by degrading text.
Why 100 KB specifically?+
It's a common hard limit on government portals, exam boards, and some job application forms. If your form allows more, try Compress PDF to 500 KB or 1 MB for a better-looking result.
Do you upload my files to a server?+
No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The only exception is the AI tools, which send the extracted text (not the file) to Claude to do their work.
Is there a file size limit?+
There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.
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