How to use it
- Enter the limit in KB. For 2 MB, type 2048.
- Choose JPG for the widest acceptance, or WebP if the site takes it.
- Add images, then download. The note under each file shows the quality and size it settled on.
How it finds the right setting
Hitting a size limit by hand means saving, checking, lowering the quality, saving again. This tool does that search for you. It first tries a high quality of 92; if that fits, you get it. If not, it narrows in on the highest quality between 55 and 92 that stays under the limit, testing only a handful of settings to get there.
If even quality 55 is too big, which happens with small limits and large photos, it reduces the pixel dimensions just enough that a quality around 75 fits, then searches again. That is a deliberate choice: a slightly smaller image with clean detail looks far better than a full-size one crushed into blocks.
Common limits
| Where | Typical limit |
|---|---|
| Government and visa photo uploads | 20–250 KB |
| Job and university application portals | 1–5 MB per file |
| Email attachments | 10–25 MB per message |
| Marketplace listing photos | Often 5–10 MB |
Leave a little headroom. Some systems count 1 KB as 1000 bytes rather than 1024, so a file at 99 KB by one measure can be 101 KB by the other. Aiming for 95 when the limit is 100 avoids the argument.
For a fixed size that comes up often, there are ready-set pages for 100 KB and 20 KB.
Questions people ask
How do I compress an image to under 1 MB?
Type 1024 as the target and add the image. Most phone photos fit at high quality once they are around 2000 pixels wide.
Will the image get smaller in pixels?
Only if quality alone cannot reach the target. The note on each file says whether it was resized.
Why is the result a little under the limit rather than exactly on it?
Quality settings move in steps, so the tool picks the highest one that fits. That usually lands a few percent under.
What if a file is already under the limit?
If it is already the chosen format, it is left exactly as it is.