Guide
How to Get an Image Under a File Size Limit (2 MB, 500 KB, 200 KB)
To get an image under a file-size limit, resize it to smaller pixel dimensions first, then compress it — resizing removes far more kilobytes than compression alone. Both steps run free in your browser with the Image Resizer and Image Compressor, and the photo itself is never uploaded anywhere.
Passport applications, job portals, insurance claims and government forms all do it: “maximum file size 500 KB”. Your phone takes 4 MB photos. Here is how to close that gap without ending up with a blurry mess.
The three levers
You have exactly three ways to make an image file smaller, and they are not interchangeable.
1. Fewer pixels (resize). A 4032 × 3024 phone photo is 12 megapixels. Most forms display the image at a few hundred pixels wide. Halving each dimension quarters the pixel count — this is usually the single biggest win, and if the display size is small, it costs you nothing visible.
2. Lower quality (compress). Re-encode the same pixels with more aggressive compression. Cheap down to a point, then it starts to show as blockiness and haloing around edges.
3. A different format. Switching a photo from PNG to JPG or WebP can cut the size by 80% or more, because PNG is the wrong format for photographs in the first place.
The order that works
Do them in this order — it gets you under the limit with the least visible damage:
- Resize first. Open the image resizer and set the width to something sensible: 1600 px is plenty for most uploads, 800 px for a profile photo. Leave the aspect ratio locked.
- Check the size. Often you are already under the limit and can stop.
- Then compress. If not, run it through the image compressor. Start at quality 70 and work down.
- Change format only if needed. A PNG photograph converted to JPG with the converter will shrink dramatically.
Compressing a huge image without resizing it first is the common mistake. You end up pushing the quality slider far lower than necessary, and the result looks worse than a resized image at high quality would have.
Rough targets
These are starting points, not guarantees — a photo of a plain wall compresses far better than a photo of foliage.
| Limit | Try |
|---|---|
| 2 MB | 2000 px wide, quality 80 |
| 1 MB | 1600 px wide, quality 75 |
| 500 KB | 1200 px wide, quality 70 |
| 200 KB | 800 px wide, quality 65 |
| 100 KB | 600 px wide, quality 60 |
The tools here do not search for a target size automatically — you set the width and quality, and see what you get. That takes one or two attempts, and it means you decide where the quality goes rather than an algorithm deciding for you.
When the form rejects it anyway
- Wrong format. Plenty of forms accept only JPG. An iPhone photo may be HEIC — convert it first.
- Dimension limits, not size limits. Some forms cap pixel width and height separately from file size. Read the wording again.
- It re-uploaded the original. Make sure you picked the converted file, not the one still in your camera roll.
One thing worth doing first
Photos carry metadata: GPS coordinates, camera serial, timestamp. If the image is going to a stranger or onto a public site, strip it with Remove image metadata. It also shaves a little off the file size.