The download is 69% smaller. 1.7 MB → 522 KB. Nothing about how ClickGraft
works has changed, so if 1.3.2 is doing its job for you, there is no reason to
update.
The icon was the whole problem. Its artwork is a smooth gradient with a soft
shadow, which is close to worst case for PNG, and the largest slice alone was
957 KB — an icon several times the size of the application it decorates.
Storing it as a 256-colour image without dithering fixes it. Dithering
scatters noise across a gradient, which is exactly what PNG cannot compress:
| Size | Difference from original | |
|---|---|---|
| as shipped in 1.3.2 | 957 KB | — |
| dithered, 128 colours | 262 KB | 0.0107 |
| undithered, 256 colours | 67 KB | 0.0033 |
Smaller and closer to the original at once. Checked by eye at full size as
well as by measurement — no visible banding, and macOS renders it identically.
ClickGraft.zip SHA-256:
8445e1c2c639e7d34bb72a0e132f82cfa8a2e65c951193e02eed2b754d192a3e
Verify with spctl -a -vvv -t install /path/to/ClickGraft.app.
Not affiliated with, endorsed by, or supported by HP Inc.