Frequently asked questions
Why is the result a little under 100KB?
We keep a small margin so the file passes on sites that count a kilobyte as 1000 bytes.
Will the quality suffer a lot?
For screens and documents usually not, but large pictures with fine detail can show artifacts. Compare before and after before downloading.
Can I compress a PNG to 100KB?
Yes. The tool accepts PNG, WebP and HEIC and saves a JPEG, so screenshots and scans shrink too, but transparency is lost.
How do I reduce a photo to 100KB on my phone?
Open this page in your phone browser, tap the area at the top and choose the photo from your gallery. In a few seconds the file is under 100KB and ready to download.
Why does a form reject my photo even though it looks small?
Forms check the file size in kilobytes, and a photo straight from a phone weighs several megabytes. After this page it fits under 100KB; some forms also check the format or pixel size, so read the requirements next to the upload button.
Can I compress several photos to 100KB at once?
Yes. Choose them all together: each one is fitted under 100KB on its own, and you can download them in a single ZIP.