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BoringPDF

Compress PDF to 100 KB

Get a PDF under 100 KB for upload forms

Drag and drop PDFs here or click to browse

About Compress PDF to 100 KB

Compress PDF to 100 KB reduces a PDF until it fits under 100 KB, the limit many application, exam and government portals set for certificates and ID documents. It keeps the best quality that fits and never uploads your file, which matters for exactly these kinds of documents.

How to compress a PDF to 100 KB

  1. Drop one or more PDFs onto the page, or click to choose them.
  2. Fit to size is already selected with a 100 KB target. Pick a different size if your form needs one.
  3. Click Compress and download the PDF. The result screen confirms whether each file fits.

What you can do with Compress PDF to 100 KB

  • Aims for 100 KB and keeps the sharpest version that still fits.
  • Tries lighter compression first, so text and images aren't degraded more than needed.
  • Shows the total size before and after and each new file's size, and flags any file that can't reach the target.
  • Compress several PDFs at once, and nothing is uploaded.

Is it private?

This tool runs entirely in your browser. Your files are processed on your own device and are never uploaded to a server. Your original file is never changed, and leaving or reloading the page clears it from the tool.

Frequently asked questions

Will a scanned certificate fit under 100 KB?

A one- or two-page scan usually does. If it doesn't, rescan in black and white or at a lower resolution, or remove extra pages first.

What if my PDF won't go below 100 KB?

The tool tells you and still gives you the smallest version it could make. To go further, remove pages you don't need with Delete PDF Pages, split the document with Split PDF and upload the parts, or rescan paper documents at a lower resolution or in black and white.

Does 100 KB mean 1,000 or 1,024 bytes per KB?

BoringPDF aims below 100,000 bytes, the stricter reading of 100 KB, so the result passes upload forms that use either definition.

Are my files uploaded to a server?

No. The file is processed by your browser on your own device and is never uploaded. Closing or reloading the page clears it from the tool.