PDFCart

Compress PDF to 20 KB

Need a PDF under 20 KB? For strict portals that accept only tiny signature or photo-ID uploads. PDFCart tries the gentlest compression first and only goes stronger until your file fits.

Processed in your browser — files never leave your device

How to compress pdf to 20 kb

  1. Select or drop your PDF.
  2. Click “Compress PDF” — we automatically find the best quality under 20 KB.
  3. Download your PDF, ready to upload or send.

Frequently asked questions

Can any PDF be compressed to 20 KB?

Single-page scans, ID cards and certificates usually fit. Long documents with many pages may not reach 20 KB; we'll show the smallest size possible.

How do I keep the best quality?

Upload a single page and crop out empty margins before compressing — less area means more detail fits into 20 KB.

Is my document uploaded?

No. Compression happens entirely in your browser — the file never leaves your device.

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