ConvertThoseFiles logoConvertThoseFiles.com

Compress PDF

Shrink PDFs in your browser — keep the quality, lose the bulk.

Tap to upload

choose from your device

One PDF file

How your files are handled

  • No uploads

    Your files never leave your device.

  • In-browser processing

    Every conversion runs locally in your browser.

  • Nothing stored

    Files aren't uploaded, so there's nothing to keep.

  • Privacy by default

    We never share or index your files.

How it works

  1. 1

    Upload your PDF

    Drop the PDF you want to make smaller.

  2. 2

    We optimise it

    Metadata is stripped and the structure rewritten with object streams.

  3. 3

    Download the smaller file

    Save the compressed PDF — typically 5–25% smaller.

Frequently asked questions

How much will my file shrink?
Typically 5–25%. Aggressive image-downsampling compression requires a server and isn't included in this free in-browser tool.
Will quality drop?
No. This client-side compression is lossless — only metadata and structural overhead are removed.
Is my file uploaded?
Never. Everything runs in your browser.