How does this hit an exact file size target?

It searches for the highest JPG quality setting that still lands at or under your target size. If the image is too large or detailed to fit under target on quality alone, it also reduces the image's dimensions in steps and searches again.

Can I target a size other than 100KB?

Yes — enter any target size in KB before uploading. 100KB is just the default, since it's the most commonly required size for online forms and applications.

Will this always exactly hit my target?

It gets as close as possible without going over. Very small targets on large, detailed photos may require noticeable quality loss or a smaller output resolution to fit.

Are my images uploaded to a server?

No, everything runs locally in your browser.

What image formats can I upload?

JPG, PNG, and WebP. The output is always a JPG, since that's the format this technique works with.

Compress Image to 100KB

Shrink a photo to a specific file size — the default 100KB target, or any size you need for a form or application upload.

Drag & Drop Your Image

Or click to browse and select a file

Files processed locally in your browser — nothing uploaded to our servers.

Target Size

Target (KB)

Set before uploading — 100KB is the common default for ID photos, forms, and application uploads.

How This Hits an Exact Size

Rather than a fixed quality slider, this searches for the highest JPG quality setting that still lands at or under your target size. If your photo is large or detailed enough that even the lowest quality setting can't fit under target, it also reduces the image's dimensions in steps and searches again at each size — the same trade-off a human would make by hand, automated.

Frequently Asked Questions

Related Tools

Image Compressor

Compress with a manual quality slider

Image Resizer

Resize to exact pixel dimensions