PDFCart

Compress PDF to 300 KB

Need a PDF under 300 KB? Useful for multi-page applications and online form attachments. 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 300 kb

  1. Select or drop your PDF.
  2. Click “Compress PDF” — we automatically find the best quality under 300 KB.
  3. Download your PDF, ready to upload or send.

Frequently asked questions

Can any PDF be compressed to 300 KB?

Most scanned and image-heavy PDFs fit easily. If a file can't reach 300 KB without becoming unreadable, we show the smallest size we could reach.

How do I keep the best quality?

If the PDF has many pages, remove blank or unneeded ones first with Delete PDF Pages.

Is my document uploaded?

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

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