PDFora
Free forever · nothing uploaded

Compress PDF to 100KB

This tool recompresses the images inside your PDF and automatically tries progressively harder settings until the file is under 100KB — or as small as it can safely go. No signup, no watermark, nothing uploaded.

  • No signup
  • No watermark
  • No file limit
  • Free at download

Three steps

Under 100KB,automatically.

  1. Select your PDF, or drop it onto the page. It opens in your browser — nothing is uploaded.
  2. It automatically tries progressively harder compression until the file is under 100KB — or as small as it can safely go.
  3. Check the result and download — or type a different target size and try again.

Why use this tool

Hit your target,keep the text sharp.

100KB is one of the tightest limits you will run into — common on government portals, exam boards, and application forms that reject anything larger.

Need a different target size?

Type any number into the target field above, or jump straight to a common one: 200KB, 300KB, 500KB, 1MB, 2MB. For full manual control over compression level instead of a size target, use the general Compress PDF tool.

Need to cut pages instead?

Split PDF, Delete PDF Pages or Extract PDF Pages reduce a file by removing content instead of recompressing it — useful when a target this small can't be reached by recompression alone.

The question everybody asks

Is it really free?

Yes. No account, no trial, no watermark on the output, no cap on file size or page count, and no payment step between you and the download button.

It is free because it is cheap to run: your PDF is compressed by your own browser, so there is no upload, no server doing the work and no storage to pay for.

Why this is free → How files are handled

FAQ

Questions peopleactually ask.

Can this actually get my PDF under 100KB?

Usually, if the size is coming from photos or scanned pages — that's almost always where a large PDF's size actually comes from. A PDF that's already mostly text may already be under 100KB, or may not shrink much further because there is little to compress in the first place.

Why is my file still above 100KB after compressing?

Some PDFs can't reach a very small target without visibly ruining the images, so the tool stops at the smallest safe result instead of forcing it and calling that a success. If that happens, removing pages — Split PDF, Delete pages, or Extract pages — usually gets you the rest of the way.

Does compressing to a small size ruin the quality?

Only the JPEG images inside the PDF are recompressed — the text and vector graphics are left completely untouched. Reaching a very small target does mean visibly softer images; the tool tries the lightest compression that still hits your number before trying anything harsher.

What is 100KB normally needed for?

100KB is one of the tightest limits you will run into — common on government portals, exam boards, and application forms that reject anything larger.

Is my file uploaded anywhere?

No. Compression runs entirely in your browser tab — the PDF is opened, compressed and re-saved locally, with nothing sent to a server.

Is there a file size or page limit on this tool?

No. There is no upload cap and no daily limit, because nothing is uploaded in the first place.

Related tools

Compressing is one job.Here is the rest.

Dashed cards are in build — they are not links yet.