Remove pages you don't need
Fewer pages means every remaining page keeps more of the size budget — split the document first if the portal only wants one section.
Compress a PDF to 100 KB
100 KB is the strictest limit most job and exam portals set for a certificate or ID scan. The target below is already set to 100 KB, and the whole job runs inside this browser tab — no account, no upload, no watermark.
Compress a PDF
Shrink heavy, image-rich or scanned PDFs so they fit inside upload and email limits.
Drop a PDF here
Works best on scans and image-heavy documents
Getting a PDF under 100 KB without wrecking it
Scans compress hardest
A photographed or scanned page is an image, so it costs far more than typed text. Scanning in grayscale at 200–300 DPI helps a lot.
Check the real final size
The tool reports the exact bytes it produced, so you can confirm it is truly under 100 KB before uploading anywhere.
Who asks for 100 KB PDFs?
100 KB is the strictest realistic PDF cap, used by exam portals and job applications for a single certificate or ID scan.
What fits inside 100 KB
One page of scanned text can reach 100 KB in grayscale at roughly 150 DPI. If your PDF was made from typed text rather than a scan, it is often already under the limit before any compression at all.
The usual reason it fails
Trying to fit a ten-page scanned document into 100 KB. Split out the page the portal actually asked for; each page has to share the same budget, and ten of them means 10 KB apiece.
Questions about 100 KB PDFs
- My PDF will not go below 100 KB — what now?
- It is almost certainly a scan at high resolution. Split it to the required pages, convert the pages to grayscale, and compress again; if it still resists, the portal's limit may assume a text PDF rather than a scan.
- Does compressing break the text layer?
- Text-based PDFs keep their selectable text. Scanned PDFs contain images, so run the OCR tool if you need searchable text after compressing.