Compress Image to 30KB
For a 30 KB target the tool tunes JPG quality automatically until your file fits under the limit. At 30 KB you finally have enough headroom for a real ID-style photo to look acceptable, which is why this size appears on many identity photo fields and university application portals. Faces stay recognizable and readable at typical document dimensions.
Drag & drop a file here, or click to choose
Where a 30 KB limit shows up
Thirty kilobytes is a common cap for uploaded ID and application photos. University admission systems, some student portals, and identity verification forms often set it because it holds a clear head-and-shoulders photo without letting file sizes balloon across thousands of applicants.
It is generous enough that you rarely need to shrink dimensions aggressively. A standard photo around 300x400 pixels usually reaches 30 KB while still looking clean, which is exactly what these forms expect.
Keeping faces sharp
For photos, keep the subject well lit and avoid busy backgrounds. A plain backdrop compresses efficiently, leaving more of the 30 KB budget for facial detail, so eyes and skin tone stay natural.
If your original is a huge phone photo, resize it toward document dimensions before compressing rather than forcing a 12-megapixel image into 30 KB. The whole process runs in your browser, so your ID photo is never sent anywhere.
How to use Compress Image to 30KB
- 1Drop your image into the box above (JPG, PNG or WebP in — JPG comes out).
- 2The tool automatically searches for the highest quality that fits under 30KB.
- 3If the image is dimensionally too large for the target, you'll be pointed to the resizer first.
- 4Download the compressed JPG.
Frequently asked questions
Is 30 KB enough for a clear ID photo?
Yes. At typical ID dimensions of around 300x400 pixels, 30 KB keeps a face sharp and recognizable, which is why identity and application forms commonly use this limit.
Should I resize before compressing to 30 KB?
If your photo comes straight from a phone camera, yes. Resize toward document dimensions first so the tool is not throwing away most of a huge image just to hit 30 KB.
Why is my photo still over 30 KB?
A very large pixel size or a busy, high-detail background can resist compression. Reduce the dimensions and use a plainer background, then recompress.