Choose your PDF below — the 100 KB target is already selected — and tap Compress. The tool finds the best quality that fits under 100 KB. A 100 KB PDF typically holds about 1–3 scanned pages at readable quality.
Tips to fit a PDF under 100 KB
- Upload only the pages asked for — use Split PDF to extract them first.
- Black & white makes scanned text sharper and files much smaller.
- Scan at 150–200 DPI, not 600 DPI — higher resolution only adds size.
- Documents are photos? Convert JPG to PDF first, then compress.
Getting documents right for online forms
- Check the exact limit first. Portals state the format (PDF or JPG) and a maximum size such as 100 KB, 200 KB or 1 MB. A file even 1 KB over is rejected.
- Scan at 150–200 DPI. That is sharp enough to read and keeps files small. 600 DPI scans only make files bigger.
- Upload only the pages asked for. Remove blank or extra pages with Organise PDF before compressing.
- Password-protected PDFs (for example e-Aadhaar or bank statements) must be opened and saved without a password before most portals — and these tools — can use them.
- Name files clearly, e.g.
10th_marksheet.pdf, and open the final file once to check every page is readable.
How to compress a PDF to 100 KB
- Choose your PDF.
- Keep the 100 KB target (or change it).
- Tick Black & white for scanned documents to keep text sharp at small sizes.
- Tap Compress PDF and download.
FAQs
How can I compress a PDF to 100 KB for free?
Use this page: pick the PDF and tap Compress with the 100 KB target. It is free, needs no sign-up and works on mobile.
How many pages fit in a 100 KB PDF?
About 1–3 scanned A4 pages at readable quality. Black & white mode fits more.
Is the compressed PDF accepted by exam portals?
Yes — it is a standard PDF. Portals check the file type and size; always preview it to make sure the text is readable before you upload.
Are my files uploaded to a server?
No. The tool runs entirely in your browser using JavaScript — your files never leave your phone or computer, so they stay private.