Compress PDF to 100 KB

Get a PDF down to roughly 100 KB so it passes strict upload limits and email filters. Scanned documents shrink the most.

Open the PDF Compressor →

How to do it

Open the PDF Compressor and upload your file.

Choose the strongest compression level.

Download the result and check the size; repeat one level lower if needed.

Can every PDF reach 100 KB?

Not always. A one or two page scanned document can usually get close to 100 KB at a strong compression level. A long report with many photos, or a PDF that is already text-only and small, will not compress that far. Try the strongest level first and check the result.

If it is still too big

Lower the compression level once more.
Split the PDF and upload the pages you actually need.
Re-scan at 150 DPI instead of 300 DPI — on screen it looks the same and the file is roughly a quarter of the size.

Quality

The selectable text layer is never touched. Only embedded images are re-compressed, so the document stays readable on screen.

Open the PDF Compressor

Questions & Answers

Is compressing a PDF to 100 KB free?

Yes. There is no sign-up, no watermark and no limit for normal use.

Why can my PDF not reach 100 KB?

Long documents and photo-heavy PDFs hold more image data than can fit in 100 KB without heavy quality loss. Splitting the file or lowering the scan resolution helps.

Will the text stay selectable?

Yes. Only images are re-compressed; the text layer is left as-is.

Does it work on scanned PDFs?

Yes, and scans give the biggest size reduction because they are mostly image data.

Other size targets

Compress PDF to 200 KB Compress PDF to 500 KB Compress PDF to 1 MB

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