Compress an image to a file-size limit
Image Studio can export an image toward a target file size. Check the upload form’s accepted formats and dimensions first: a limit in pixels is different from a limit in kilobytes.
Open Image StudioOpen the image
Add one photo or a batch. Keep the original file so each attempt starts with the same source rather than another compressed copy.
Set the dimensions
Crop to the required shape, then reduce the width or height if the source contains more pixels than the destination needs. A small profile picture rarely needs a full-resolution phone photo.
Choose the format and target
Select an accepted output format and set the target size. If the result is still too large, reduce the dimensions or choose a more suitable format. Lower quality alone may not be enough.
Check the downloaded file
Check its actual byte size, dimensions and appearance. Leave some room below a strict size limit, then inspect text, faces and edges at the size the image will be displayed.
Choosing a format
| Format | Use it for |
|---|---|
| JPG | Photographs when transparency is not needed. |
| PNG | Supports transparency. Target-size mode can reduce palette colors and dimensions. |
| WebP | Smaller image delivery when the destination accepts it. |
Starting with HEIC?
Convert the photo to an accepted format first if the destination cannot open HEIC.
Example: a photo for a 200 KB upload limit
Suppose a form accepts JPG, requires at least 800 × 600 pixels and limits the file to 200 KB. Start with a copy of the photo, crop to the required shape and choose dimensions above that minimum. Select JPG and a target slightly below the limit. After exporting, check both the file size and pixel dimensions: meeting one requirement does not meet the other. These are example requirements; use the receiving form’s actual values.
What target-size mode can change
The target is a request, not a promise to preserve the dimensions you selected. Image Studio first tries stronger compression. For PNG it can reduce the palette to fewer colors; if that is insufficient, target mode can also reduce width and height. This can affect gradients, fine text and a form’s minimum-resolution requirement. If exact dimensions matter, export without a target first, inspect the size, then decide which trade-off is acceptable.
When the upload still fails
- The file is small enough, but rejected
- Accepted format, required dimensions and any aspect-ratio rule.
- Text or edges look rough
- Use less compression, preserve more pixels or try PNG when accepted.
- PNG remains too large
- A photo may suit JPG or WebP better. Keep PNG when transparency or the destination requires it.