Compress a PDF to 100 KB
Scans of an ID card, a signature page or a single certificate are the files that most often need to be this small. Add yours, keep 100 KB selected and press Compress; a long photo-heavy file may not reach it. Nothing is uploaded, it all runs in your browser.
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Where a 100 KB PDF is needed
100 KB is the kind of limit you may meet on upload boxes for ID scans, signature pages, single-page certificates and quick form attachments. Because the budget is so small, it suits one or two pages best. If a longer scan will not fit, split it first or send the pages as separate files.
Tip: scan a single page in black and white or grayscale before compressing. A 100 KB file is realistic for about one or two such pages, whereas a colour photo of a document may use the whole budget alone.
How to use Compress PDF
- Add the PDF you want to shrink.
- Choose a target size or a compression level.
- Press Compress and download the smaller file.
Frequently asked questions
- Can any PDF be made as small as 100 KB?
- Not always. Text and vector pages are already tiny, so only images can shrink. A multi-page scan made of large photos may stay above 100 KB even at the lowest quality; the tool then tells you how far it got instead of pretending. You can split the file or use fewer pages and try again.
- Will a 100 KB PDF still be readable?
- Usually yes for text documents, but images are saved at lower quality and resolution to reach this size, so fine print inside a photo can look soft. Check the preview before you send it.