How to use this page
- Choose a JPG, PNG or WebP image in the workspace above.
- Keep JPG or WebP selected and confirm the target is 50 KB.
- Compress on this device, check the actual size, then download.
Worked example: a 4 MB phone photo for a 50 KB field
A typical 12-megapixel JPG is several megabytes. Enter 50 in the target field (already filled here), choose WebP or JPG, and compress. The result panel reports the real byte size. If dimensions drop more than you want, the field is too small for that photo — crop or resize to the displayed size first, then compress again from the original master.
What this job is for
Fifty kilobytes is a harsh limit. Quality settings alone often cannot get a large camera photo that small, so the tool may also reduce pixel dimensions. That is expected. Review the preview at the size you will actually display. A 200-pixel icon can look fine; a full-width hero will not.
Useful limits
PNG output cannot aim at a KB target in this browser encoder. Keep the original as your master. Fifty KB is useful for tiny avatars, some comment forms and older mailing tools, not for print.
The live tool behind this page is Image Compressor. It is the same local engine as the rest of Image Cosmos.
Frequently asked questions
Will the file be exactly 50 KB?
Almost never exact. Browser encoders miss exact byte values, so the finished file is usually a little under 50 KB.
Why did the width change?
If quality steps cannot reach 50 KB, the compressor reduces pixels and tries again. That keeps the file under the limit instead of failing silently.
Does the 50 KB image upload to Image Cosmos?
No. The file is read, encoded and offered as a local download in this tab.