Exam registrations, visa and government portals and many job sites only accept documents under 100 KB. This page is preset to that limit: PDF Converter tries progressively stronger settings – first restructuring, then downsampling and re-encoding images – and keeps the first version that fits, so quality is reduced only as much as the limit requires.
Compress to a specific size: 100 KB 200 KB 500 KB 1 MB 2 MB
How to compress PDF to 100 KB
- Drop your PDF into the box above – the size is already set to 100 KB.
- Optionally tick “Turn pages into images if needed” for scanned or very large files.
- Compress and download. The result shows the final size, so you know it will pass the upload check.
Good to know
- 100 KB is a tight limit: a one- or two-page scan usually fits, a 20-page photo document usually does not. Split long files with Split PDF and upload them in parts.
- Text-based PDFs keep sharp, selectable text. Scans are re-encoded at a lower resolution, so check that small print is still legible.
- If the limit cannot be reached, you still get the smallest version possible and a note telling you how close it got.
Frequently asked questions
How do I reduce a PDF to under 100 KB?
Upload it here and press Compress. The size limit is already set to 100 KB; the tool tries stronger and stronger compression until the file fits.
Why can’t my PDF reach 100 KB?
Files with many pages of photos or scans hold too much image data for 100 KB. Enable “Turn pages into images if needed”, convert to black and white with PDF to Black & White, or split the document into parts.
Will my signature and photo still be visible?
Yes. Images are made smaller, not removed. At 100 KB, very small details can soften, so check the result before you submit it.
Is my document uploaded?
No. Compression runs inside your browser and the file never leaves your device.