Compress PDF to 100 KB
100 KB is a tight limit, so this preset shrinks the images inside your PDF hard. It works best on one- or two-page scans.
Nothing is uploaded. Your files stay private.
Popular sizes
Opens the tool with the right settings already chosen.
How to compress a PDF
Three steps, about ten seconds.
- 01
Add your PDF
Drop it in the box above, or tap to choose from your phone or computer.
- 02
Pick a target
Choose a size like "Under 200 KB" for portals, or keep the best-quality default.
- 03
Download
Check the new size and save the file. Done.
Getting a PDF under 100 KB
100 KB is tight. Quikdo steps down from images 2,400 pixels across to as small as 440 pixels until the file fits, so a multi-page colour scan may end up hard to read.
It works best on a single page, or a few pages of mostly typed text. For a scan, upload only the pages the form asks for.
Always open the result before you send it. If it's too blurry, try a 200 KB target if the portal allows it.
Frequently asked questions
Can a scanned document fit in 100 KB?
One or two pages usually can, though they'll look softer. More pages than that rarely stay readable.
How do I make a PDF smaller?
Drop the PDF in. Quikdo re-saves the pictures inside it at a lower resolution and quality, which is where most of the size is. Pick a target like 200 KB if a portal has a limit.
How do I get a PDF under 200 KB?
Choose the 200 KB target before you drop the file in. Quality is lowered only as far as needed to get under it.
How do I convert a PDF from MB to KB?
Set a target in KB, such as 500 KB or 200 KB, and compress. A 3 MB scan often ends up a few hundred kilobytes.