Exact-size JPEG compressor
Compress a JPEG to 300 KB Online Free
300 KB keeps near-full quality for photos that must look professional: portfolios, listings and official attachments. | Quality-first uploads.
Compress to 300 KB nowThe tool opens with the 300 KB target already applied | nothing is uploaded anywhere.
At this budget the ladder barely has to work | most 12-megapixel photos resized to portal dimensions fit under 300 KB at quality 85 or better. You get clean edges, honest colour and zero visible artefacts.
Typical askers: job applications with photo resumes, property listings, official correspondence.
Portals reject files by the byte, so guessing with quality sliders wastes hours. This preset runs a measured quality ladder (and downscales only if quality alone cannot reach the target) on your own device, then reports the achieved size before you download. Your file never leaves the browser tab.
Will the image still look acceptable at 300 KB?
It depends on the picture: tight crops and flat subjects compress beautifully, while wide busy photographs give up fine detail. The live preview lets you judge before downloading.
Is my photo uploaded anywhere?
No. Every pixel is processed by JavaScript inside your own browser tab | nothing is sent to a server, stored or logged, which matters when the file is an ID photo or signature.
Does this work on my phone?
Yes. The tool is fully responsive and touch friendly, and the whole conversion runs in the mobile browser itself | no app install.
How to hit 300 KB exactly
- Open the tool with the button above | the 300 KB target is pre-filled.
- Add your JPEG (or any image | PNG converts automatically in target mode).
- Run and check the achieved size on the result card.
- Download | the file measures 300 KB or less, guaranteed.