Compress PDF to 100 KB
100 KB is a tight limit, often used for ID proofs and caste or income certificates. Add your PDF below and the tool compresses it to stay under 100 KB, then shows the final size before you download.
How to compress a PDF to 100 KB
- Add your PDF above. It stays on your device.
- Keep the 100 KB target that's already selected, then press Compress.
- Check the final size and download the smaller PDF.
Tip for better results
At 100 KB, a single page has the best chance of staying readable. Crop away the table or background around the page before you scan, and avoid adding blank pages.
Starting from photos instead?
If you have photos or scans rather than a PDF, use Image to PDF under 100 KB, which joins them into one PDF and fits it to the same limit in one step.
Frequently asked questions
How do I compress a PDF to 100 KB?
Add your PDF above. The 100 KB target is already selected, so press Compress and download the result. The final size is shown first, so you know it will pass the upload limit.
Will the PDF still be readable at 100 KB?
The tool looks for the highest quality that still fits rather than compressing blindly. If the limit is too tight for the number of pages, it tells you instead of giving you an unreadable file.
Which PDFs compress best?
Scanned and photo-based documents, like certificates, mark sheets and ID proofs. Pages are rebuilt as images, so text in a PDF made from Word can no longer be selected. Keep your original if you need that.
Is my PDF uploaded anywhere?
No. The PDF is opened and rebuilt inside your browser, so it never leaves your device. It's free, with no sign-up and no watermark.