| GD | NetPBM | ImageMagick | |
|---|---|---|---|
| GIF | No1 | Yes | Yes |
| JPEG | Yes2 | Yes | Yes |
| PNG | Yes | Yes | Yes |
| Cropping | Good | Good | Good |
| Scaling | Fair | Good | Very Good |
| Rotation | Poor | Fair | Very Good |
| Flip | Good | Poor | Good |
- 1 GIF is support in old GD say version 1.61 and below.
- 2 Full colour JPEG is not supported in GD versions less than 2.01 with PHP.
