Compress PDF to 100KB Online Free
A 100KB limit is one of the strictest you will meet — visa applications, government e-forms and exam portals often demand it. This tool is pre-set to a 100KB target: drop in your PDF and it tunes the image quality to land at or just under 100KB while keeping the document readable.
It works best on scanned, image-heavy PDFs (where most of the size lives). Everything runs in your browser, so even an ID scan or bank form is never uploaded.
Your file never leaves your browser. All processing happens on your device. Nothing is uploaded to any server.
When you need 100KB
- Visa and immigration document uploads
- Government and municipal e-forms with a 100KB cap
- Exam and admission portals
Other size targets
Need a different size or a quality slider instead? Use the compress pdf. New to it? read the guide.
Frequently asked questions
Upload your PDF here — the target is already set to 100KB. The tool tunes quality to land at or just under 100KB and tells you the final size.
Yes for most documents. To guarantee 100KB the pages are rendered as compressed images, so text becomes non-selectable but stays legible.
No. Compression runs entirely in your browser; your PDF never leaves your device.