Compress an image to 100 KB
Compress JPG, PNG or WebP images to 100 KB or less in your browser. Quality is lowered step by step, and the picture is scaled down only when needed. No upload.
Process locally
Files stay in this browser session. Closing or clearing releases them.
Choose files
JPG, PNG, WebP, up to 20
Drop files here, or
Adjust settings
Optional: Target size, Minimum quality, Preserve dimensions
Run
Processes in this browser; cancel at any time
About this task
Many job portals, school sites and online forms reject photos over 100 KB, while a phone photo is usually 2 to 5 MB. This page opens the image compressor with the target already set to 100 KB: it makes up to eight attempts, never going below quality 0.5, and keeps the best result that fits.
“Preserve dimensions” is off here, so when quality alone is not enough the tool also scales the picture down, about 15 percent at a time. As a rough guide, a JPG photo of around 1000 × 750 pixels fits in 100 KB at good quality, while a 12-megapixel phone photo is too large even then, so resize it to about 1200 pixels wide first. Up to 20 JPG, PNG or WebP images of up to 8 MB each are compressed together, in your browser.
How to do it
- Choose or drop up to 20 JPG, PNG or WebP images. Convert iPhone HEIC photos to JPG first.
- Check the settings: “Target size (KB)” is 100, “Minimum quality” is 0.5 and “Preserve dimensions” is off.
- Select Run. The compression report lists each image’s new size, quality and dimensions.
- Download the images one by one or as a ZIP, and upload them to the form.
Common questions
Why does the upload form say my image is slightly over 100 KB?
This tool counts 1 KB as 1,024 bytes, so a 100 KB result can be up to 102,400 bytes. A form that counts 1 KB as 1,000 bytes sees that as 102 KB. Set the target to 97 KB to stay under 100,000 bytes.
Will the image keep its width and height?
Only if lowering the quality is enough. On this page “Preserve dimensions” is off, so a picture that is still too large after five attempts is made about 15 percent smaller on each further attempt. Turn the option on if the form asks for exact pixel dimensions; the tool then reports TARGET_UNREACHED instead of shrinking the picture.
Why can’t a PNG screenshot reach 100 KB?
PNG is lossless, so lowering the quality hardly changes its size and only scaling it down helps. For photos saved as PNG, convert them to JPG first, which usually brings them well under 100 KB.
Other settings and related tasks
Need other settings? Open the full Compress images tool.