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Compress PDF to 100 KB

Shrink a PDF to fit under 100 KB for forms and upload portals.

Select PDFs

PDF, up to 20

Files stay on your device.0 bytes uploaded

Get a PDF under 100 KB

Application portals for exams, jobs, visas and scholarships often refuse any PDF over 100 KB. Drop your file in and pdfconva looks for the best quality that still fits: first by squeezing the images, then, only if it has to, by turning pages into lighter images. You see the new size before you download, and the file never leaves your device.

  • Your files stay on your device

    Compress PDF to 100 KB runs in your browser, so nothing is uploaded — not the file, not even its name.

  • Free, with no sign-up

    No account, no watermark on your files and no daily limit for normal use.

  • Up to 20 files at once

    Each file can be up to 100 MB. Large or scanned files simply take a little longer.

  • Works on every device

    Windows, Mac, Linux, iPhone, iPad and Android, in any modern browser. Nothing to install.

Compress PDF to 100 KB, step by step

  1. 1

    Select your PDF — the 100 KB target is already set.

  2. 2

    Press Compress and check the new size.

  3. 3

    Download the PDF and upload it to the form.

Good to know

Then you get the smallest readable version and a clear note that it didn’t fit. Long scanned documents are the usual cause — try splitting off only the pages the form needs, then compress again.

For a few pages of text, yes — text stays sharp because it isn’t turned into pixels unless there’s no other way. Photos and scans lose some detail at this size.

Yes. Type any size from 10 KB up, or use the 200 KB and 1 MB pages.

Each file can be up to 100 MB, and you can add up to 20 files at once. Large or scanned files simply take a little longer.

Yes. It runs in any modern browser on Windows, Mac, Linux, iPhone, iPad and Android, with nothing to install. You can also add pdfconva to your home screen and open it like an app.

No. This tool runs entirely in your browser. Your files never leave your device.

Yes. Every pdfconva tool is free, with no sign-up and no watermark on your files.

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