Compress PDF to 100 KB
“File size must not exceed 100 KB” is the most common rule on online application forms. It shows up on exam registrations, college admissions and government service portals. This page is preset to 100 KB: drop in your PDF and get a file that fits, with the best quality that still stays under the limit.
How to compress a PDF to 100 KB
- Drop your PDF into the box above, or tap it to pick a file.
- Check that the target is set to 100 KB. Change it if your form asks for a different limit.
- Press “Compress to 100 KB”. The tool first tries a lossless clean-up, then lowers image quality step by step until the file fits.
- The compressed PDF downloads automatically. Open it once to make sure every page is readable before you upload it.
Where you’ll meet a 100 KB limit
- Mark sheets, pass certificates and degree certificates for exam and admission forms
- Identity and address proofs, such as a scanned ID card, passport page or utility bill
- Category, income and residence certificates for reservations and scholarships
- Admit cards, fee receipts and NOCs that ask for a re-upload
What fits in 100 KB
At 100 KB you can keep one to three scanned pages clearly readable, or a single page in color. A PDF created directly from Word or Google Docs (not scanned) often fits dozens of pages in 100 KB without losing any quality, so the tool tries a lossless clean-up first and only re-encodes the pages if that isn’t enough.
Tips if your file won’t go small enough
- If the result looks blurry, compress each page separately. Three files of 100 KB each look far better than one.
- Scan at 150–200 dpi. Higher settings make files bigger without making the printout any clearer.
- Front and back of an ID card? Put both on one page before scanning instead of using two pages.
- Remove the cover or instructions pages that the form doesn’t need.
Your file never leaves your device
Application forms usually mean ID cards, mark sheets and certificates. This compressor runs entirely in your browser, so none of those documents are uploaded to a server. You can even disconnect from the internet once the page has loaded.
Frequently asked questions
QWill my text still be readable at 100 KB?
For one to three scanned pages, yes. The tool keeps the highest resolution that still fits, so you get the clearest file the limit allows. It also tells you the exact final size before you upload.
QWhy is my compressed file 98 KB and not exactly 100 KB?
Compression works in steps of quality, so the result lands somewhat below the limit rather than on it. Anything under 100 KB is accepted by the form.
QIs “100 KB” measured as 1,000 or 1,024 bytes per KB?
Portals differ, so we play safe: the file is compressed to at most 100,000 bytes. That passes the check either way.
QIs my document uploaded anywhere?
No. Compression runs in your browser using your own device. The PDF is never sent to our servers or anyone else’s, which matters for ID proofs and certificates.
Other target sizes
Upload limits differ from form to form. Pick the size your portal asks for: