Image to PDF under 100 KB with Upload Fitter
This page opens with a PDF under 100 KB rule at 150 DPI, a common limit for certificates, ID copies and proof of address. Choose a photo or a scan and the tool shows Fits with the exact size, or tells you the smallest size that was possible.
- Tap Choose photos and pick the photo of the document.
- Fitting starts at once with the PDF under 100 KB rule.
- Use After and Before to compare; check that the text is still readable.
- Tap Download or Share when the badge says Fits.
What to know
100 KB is tight for a full phone photo: an A4 page at 150 DPI is about 1240 x 1754 pixels, and at a medium JPEG quality its size depends mostly on how busy the page is. Plain text on white paper compresses well; a photo of a page on a wooden desk, with shadows and noise, does not. Cropping to the paper and taking the photo in good light makes a visible difference.
If one page will not fit, the badge turns red and shows the smallest size that was possible. Allow lower quality lets the tool go below 35% quality and below 480 pixels on the long side before giving up. That can rescue a file, but check that numbers on the page are still readable before you send it.
Updated · Cosmovex
Questions
My PDF is 400 KB. Can this make it smaller?
With Pro you can open an existing PDF: each page is turned into an image and fitted under the size. Text in the result is no longer selectable, which the tool says before you download. On the free plan, use photos or screenshots of the pages instead.
Why 150 DPI?
It is enough for printed text to stay readable and keeps a page small. You can change it in Custom; the DPI also sets the physical page size when Page size is Fit to image.
Why is the file a little under the limit, not exactly on it?
Each try is a finished file. The tool keeps the highest JPEG quality whose file is at or under the maximum, so it usually lands a few kilobytes below it. It counts the maximum as 1,000 bytes per KB, the stricter reading, so the file also passes a form that counts 1,024.
Are my photos sent anywhere?
No. They are read and encoded in your browser. When you download or share, the page sends only a count request (a random ID for this browser and a one-way hash of your network address, deleted after 2 days) for the free daily limit.
The free plan covers everything on this page. Upload Fitter Pro ($9.50 until Oct 25, then $19, paid once) is described on the Upload Fitter page.
