About compressing to this size
100 KB comfortably fits a clear photo of an ID card or certificate, and is a frequent limit for supporting documents on job portals, school admissions and online applications.
How it gets to exactly 100 KB: the tool tries different JPEG quality levels and keeps the highest one whose file is still under 100 KB, so the result usually lands just below the limit (for example 90–100 KB). Only if quality alone can’t get small enough does it shrink the image dimensions, a little at a time.
Tip: For text documents, photograph them in good light and crop the edges — clean, flat images compress far better.
Need a different size? 10 KB · 20 KB · 30 KB · 50 KB · 200 KB · 500 KB — or type any number into the “Target size” box above.
Frequently asked questions
How do I reduce a photo to 100 KB?
Drop the photo into the box above. The target is already 100 KB; download the result when it appears. It will be 100 KB or slightly less.
Will my photo look blurry at 100 KB?
The tool always keeps the best quality that fits. Faces and documents stay clear at common form sizes; very large photos may be scaled down slightly to fit.
Why is my file a little smaller than 100 KB?
Portals reject files even 1 byte over the limit, so the tool stays safely under 100 KB instead of going over.
Are my photos uploaded to a server?
No. The compression runs entirely in your browser, so your photos never leave your phone or computer.
Does it work on mobile?
Yes — open this page on your phone, tap the box, pick a photo from your gallery and download the result.