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Free browser-based PDF tool

Compress PDF to 100KB

Reduce your PDF to around 100KB or less directly in your browser. Your file is processed on your device and is not uploaded to our server.

Drop your PDF here

or choose a file from your device

PDF only · Up to 50MB · Up to 80 pages
🔒 PrivateNo file upload to our server
⚡ FastRuns inside your browser
🎯 100KB TargetAutomatic quality adjustment

How to compress a PDF to 100KB

  1. Select or drop your PDF file above.
  2. Click Compress PDF to 100KB.
  3. The tool automatically adjusts image quality and resolution to get as close as possible to 100KB.
  4. Download the compressed PDF to your device.
Important: Exact 100KB output cannot be guaranteed for every document. PDFs with many pages may have a minimum possible size above 100KB. For strong compression this tool rasterizes pages, so selectable text, links, forms, and some PDF accessibility features may not be preserved.

Frequently asked questions

Does this tool upload my PDF?

No. The PDF is processed in your browser. The processing libraries are loaded by the page, but your selected document is not sent to TheToolsMap for compression.

Will the result always be exactly 100KB?

The tool aims for 100KB or less where technically possible. Very long or complex PDFs can remain above 100KB even at aggressive settings.

Why can text become less sharp?

To achieve very small file sizes, PDF pages are converted to compressed page images. This can reduce sharpness, especially on documents with tiny text.