Edit a PDF

Compress a PDF to 100 KB

For upload boxes that say “maximum 100 KB”. The size is already selected: add your PDF and press Compress PDF.

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or drop them anywhere on this box

Processed privately on your device

How to compress a PDF to 100 KB

  1. Add the PDF you need to upload. 100 KB is already selected.
  2. Press Compress PDF. The sharpest setting is tried first, then lighter ones until the file is under 100 KB.
  3. Read the note under the result, then download the file and upload it to the form.

Why use PDF Karigar to compress a PDF to 100 KB?

100 KB is one of the tightest limits online forms use, usually for a single document such as an ID copy, a certificate or a one-page letter. PDF Karigar keeps the best quality that still fits, and says so plainly when a file needs more room.

  • Set for 100 KB. Nothing to configure. The size is chosen before you even add your file.
  • Private by design. Files are processed on your own device. Nothing is uploaded, stored or shared.
  • Free, with no catch. No sign-up, no watermarks and no daily limits.
  • Works everywhere. Runs in any modern browser on Windows, Mac, Linux, Android and iPhone.

What fits in 100 KB, and what doesn’t

100 KB is small, so it suits one document at a time. What is on the pages matters more than how many there are:

  • Typed documents, such as a letter, a form or a CV saved from Word, are mostly text. Text takes very little room, so these usually fit with no visible change.
  • One scanned page or phone photo, such as an ID card, a certificate or a signed letter, normally fits with the writing still easy to read.
  • Several scanned pages share the same 100 KB. Two or three still fit, but each page holds less detail, so zoom in on the result before you upload it.

Make a scan small before you compress it

  • Photograph only the paper, filling the frame. A tabletop around the page is wasted space; if it’s already in the file, trim it with Crop PDF.
  • If colour doesn’t matter, convert the file with Grayscale PDF first. Gray pages need far fewer bytes.
  • When a form has a separate upload box for each document, keep the documents as separate files. Merging them makes every page share one 100 KB.

When a form rejects a file that looks small enough

Forms don’t all count the same way. Some treat 100 KB as 100,000 bytes, while PDF Karigar counts 1 KB as 1,024 bytes, the way your computer shows file sizes. If a file shown as 98 or 99 KB is refused, type 95 in the size box and try again.

Allowed a bit more? Compress a PDF to 200 KB for clearer multi-page scans, or use Compress PDF for any size you type.

Compress PDF to 100 KB: frequently asked questions

Can a PDF with several scanned pages fit in 100 KB?

Often, yes, but the pages share the same 100 KB, so each one keeps less detail. Two or three phone-photo pages usually fit; open the result and check that small print is still readable. If the form accepts 200 KB, use that size instead for clearer pages.

Why was my file rejected when it shows 99 KB?

Some forms count 100 KB as 100,000 bytes, but PDF Karigar, like most computers, counts it as 102,400 bytes. A file just under our limit can be just over theirs. Type 95 in the size box, choose KB, and compress again to leave a margin.

What if my PDF is already under 100 KB?

It is left exactly as it is, at full quality, and the result tells you so. Nothing is recompressed, so there is no reason to worry about running it twice.

Will typed text stay selectable?

For typed documents, almost always: text takes very little space, so only the pictures inside are shrunk. Text is turned into an image only as a last resort for a long scan, and the result note tells you when that happened.

Is my ID card or certificate uploaded anywhere?

No. The compression runs in your browser, so personal papers never leave your device. You can even switch off the internet after the page has loaded.

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