Compress PDF to 100KB

Need a PDF under 100KB? Select your file and the tool automatically lowers image quality step by step until the PDF fits — keeping it as sharp as possible.

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Quick answer: Select your PDF, keep the target at 100KB and click Compress. The tool tries higher quality first and stops at the best version that fits.

Compress PDF to:

How to use Compress PDF to 100KB

  1. Select or drag your PDF file.
  2. Check that the target size is set to 100KB (you can change it).
  3. Click Compress and download your PDF under 100KB.

Why do websites ask for PDFs under 100KB?

Government recruitment, exam and scholarship portals often cap each certificate, mark sheet or ID proof at 100KB. Small limits keep their servers fast and their storage costs low, so a file that is even slightly larger is rejected.

How the tool gets your PDF under 100KB

First the tool shrinks only the photos inside your PDF, keeping text sharp and selectable, trying several quality levels. If that is still too big, it saves pages as optimized images and lowers resolution step by step. The first version that fits under 100KB is used, so you get the best quality possible for that size.

How many pages fit?

It depends on how busy the pages are. As a rough guide, at 100KB about 1–3 scanned pages stay readable. Text-only pages compress much better than photos or colored scans.

If your PDF still won't fit

Split the document and upload only the required pages, remove blank or duplicate pages, or scan in black and white instead of color. A scan at 150–200 DPI is plenty for most forms; higher settings make files much larger without helping readability.

Check before you upload

Open the compressed PDF and zoom in on small text such as dates, roll numbers and signatures. If anything is hard to read, try a slightly larger target or remove pages instead.

Frequently asked questions

Will the PDF be exactly 100KB?

It will be at or below 100KB. The tool picks the highest quality that stays under the limit, so the result is usually a little smaller than 100KB.

Will text stay selectable?

Whenever possible, yes: the tool first tries to reach the size by compressing only images. If the limit is too small for that, pages are saved as images; text stays readable but can no longer be selected. The result tells you which method was used.

My PDF is already smaller than 100KB. What happens?

The tool keeps your original file unchanged, so you never lose quality unnecessarily.

Are my files uploaded to a server?

No. Everything is processed directly in your browser using JavaScript. Your files never leave your device, so they stay completely private.

Last updated: · Free to use, no sign-up.

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