At 100 KB there is room for a sharp portrait, a readable photo of a certificate or mark sheet, or a product photo that still looks good on screen. Many application portals use this limit for document images, and it is a sensible size for pictures on a web page too. This page opens Compress image with 100 KB already set.
The pictures are compressed inside your browser, one after another, and saved to your device. There is no upload and no queue.
How to compress an image to 100 KB
- Add the pictures you want to shrink; you can choose many at once.
- Keep Compress to on Target size, with 100 in Target size (KB).
- If the pictures are very large, set a Longest side (px), for example 1600, so they all come out a consistent size.
- Select "Compress image" and read the notes.
- Download each picture, or choose "Download all (.zip)" for the whole batch.
Documents and photos at 100 KB
For a photo of a document, readable text depends on pixels more than on JPEG quality, so photograph the page flat, in good light and close enough to fill the frame. Paper that comes out grey or shadowed costs extra kilobytes and looks worse after compression.
Photos of people and places are more forgiving. Plain backgrounds and soft light take fewer bytes than leaves, crowds or patterned fabric, so two photos of the same pixel size can end up at different qualities within the same 100 KB.
Good to know
- Pictures already under 100 KB in the chosen format are left untouched.
- A KB is 1000 bytes here, so 100 KB means at most 100,000 bytes.
- Phone photos are turned the right way up before they are compressed.
- GIFs keep only their first frame, and BMP files are saved as JPEG.
Frequently asked questions
I have a scanned PDF, not a picture. Can I get it to 100 KB?
Yes, with Compress PDF to 100 KB, which works on scanned PDFs in the same private way.
Why do my pictures end up at different qualities?
Each one gets the highest quality that fits in 100 KB, and that depends on its size and detail. The note for each picture shows the quality used and, if the pixels were reduced, the new size.
Can I turn the compressed pictures into one PDF?
Yes. Put them together with JPG to PDF, which places JPG pictures into the PDF without compressing them again, so the PDF stays small.
Do I need to install anything?
No. It works in any up-to-date browser on a computer or phone, with no sign-up and no app.