Runs in your browser · nothing is uploaded

Compress PDF for upload portals

Portals reject files above their limit, and every form has its own. Once you add a file, PDFKilo picks the best quality that fits under 1 MB, and the slider lets you match any other limit.

Three steps

  1. 01

    Add a PDF

    Drop the file in or pick it from your device.

  2. 02

    Pick a level

    Move the slider and watch the size estimate.

  3. 03

    Download

    Your compressed file is ready in seconds.

Use cases

Pick what the file is for and PDFKilo picks the compression level for your exact document.

Why PDFKilo

Fully private

Ghostscript runs in WebAssembly on your device. Not a single byte of your file reaches a server.

Accurate estimate

Before compressing, we sample the first pages and show the expected size for the chosen level.

No watermarks

No logos stamped on pages, no sign-up and no limit on the number of files.

Never worse

If compression does not help, you get the original back rather than a bigger file.

FAQ

What size do government portals accept?

It depends on the form, but 1 to 10 MB per file is typical. The exact number is shown next to the upload field.

Will a compressed passport scan be accepted?

Yes, as long as every detail is readable. Open the result and check that numbers and stamps are clear.

My document has several pages. What now?

Combine the pages into one PDF and compress it as a whole. If the portal wants separate files, compress them one by one; there is no limit on how many.

The portal only accepts JPG. What do I do?

Switch the output format to JPEG: every page becomes an image and the estimate shows the final size.

Can I do this on my phone?

Yes. Open the site in your phone browser, pick the PDF from your files and download the result, ready to attach.

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