faymox.

Compress Image to a Target Size

Tell us the KB limit — we find the sharpest image that fits under it. Built for online forms, exam registrations, passport and visa uploads.

Drop images here
or click to choose (JPG, PNG, WebP — batch supported)
Private by design: everything runs in your browser. Your photos are never uploaded — important for ID and passport photos. We target slightly under your limit so the file passes whether the portal counts 1 KB as 1,000 or 1,024 bytes.

How it works

  1. Pick a preset or type the exact KB limit your form asks for.
  2. Drop one photo — or a whole batch (photo + signature + documents).
  3. Each image is compressed to the highest quality that fits, then download one by one or all as a ZIP.

FAQ

How do I compress an image to exactly 100KB?

Type 100 in the target box (or tap the 100 KB preset), drop your image, and download the result. The tool searches for the highest quality that keeps the file at or under your target, and shrinks the dimensions only if quality alone is not enough.

Is my photo uploaded to a server?

No. Compression runs entirely in your browser. Your photo never leaves your device — which matters for ID, passport and exam photos.

Why did my image get smaller dimensions?

For very small targets like 20 KB, a 4000x3000 photo cannot fit at any quality. The tool then reduces the dimensions step by step and uses the largest size that still fits, so you always get the clearest result possible.

Which format should I choose for online forms?

JPG. Almost every government, exam and visa portal accepts JPG. WebP is smaller, but many older portals reject it. Transparent PNG areas are placed on white, the way portals expect.