Compress PDF to 100KB: how it works
Upload portals often reject a PDF that's even slightly over 100KB. Instead of guessing a compression level, add your PDF here: FileStripe renders every page at the highest resolution and JPEG quality that still keeps the whole file under 100KB, then rebuilds it.
100KB is a tight limit. A one or two page scan fits easily and stays readable; a long document may drop to 50-72 DPI, which is still legible on screen. If text gets too soft, tick 'Convert to grayscale' (it saves a lot) or split the PDF and upload only the pages you need.
How to compress a PDF to 100KB
- Choose your PDF.
- It's compressed to just under 100KB automatically. Change the target if your form needs a different size.
- Check the result and download it.
Features
- Never over 100KBChecked after every attempt.
- Sharpest that fitsSearches DPI and quality.
- Grayscale optionFor very tight limits.
- PrivateNothing is uploaded.
Frequently asked questions
How do I reduce a PDF to 100KB without losing quality?
Some loss is unavoidable when a scan has to fit in 100KB, but FileStripe keeps as much as possible: it tries high resolutions first and only lowers them if the file won't fit. Text-heavy scans usually stay crisp.
Will the text still be selectable?
No. To reach a specific size, pages are converted to optimised images, the same way scanners create PDFs. Keep the original if you need to copy text.
Is my PDF uploaded?
No. The compression runs in your browser, so confidential documents like ID scans and certificates never leave your device.
Is the Compress PDF to 100KB free?
Yes. The Compress PDF to 100KB is completely free with no sign-up, no watermarks, no daily limits and no premium tier.
Are my files uploaded to a server?
No. FileStripe processes your files locally in your web browser using JavaScript. Nothing is uploaded, so the Compress PDF to 100KB is safe for private photos and confidential documents and even works offline once the page has loaded.
Does it work on iPhone and Android?
Yes. The Compress PDF to 100KB works in Safari, Chrome, Firefox, Edge and Samsung Internet on phones, tablets and computers. On a phone you can pick files from your photo library or files app and share the result straight to another app.
Last updated · Processing happens locally in your browser.