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Add Convert SVG To Favicon as a Unix TIL

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jbranchaud
2024-09-15 12:24:18 -05:00
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README.md
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@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
_1440 TILs and counting..._
_1441 TILs and counting..._
---
@@ -1356,6 +1356,7 @@ _1440 TILs and counting..._
- [Command Line Length Limitations](unix/command-line-length-limitations.md)
- [Compare Two Variables In A Bash Script](unix/compare-two-variables-in-a-bash-script.md)
- [Configure cd To Behave Like pushd In Zsh](unix/configure-cd-to-behave-like-pushd-in-zsh.md)
- [Convert SVG To Favicon](unix/convert-svg-to-favicon.md)
- [Copying File Contents To System Paste Buffer](unix/copying-file-contents-to-system-paste-buffer.md)
- [Copying Nested Directories With Ditto](unix/copying-nested-directories-with-ditto.md)
- [Count The Lines In A CSV Where A Column Is Empty](unix/count-the-lines-in-a-csv-where-a-column-is-empty.md)

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unix/convert-svg-to-favicon.md Normal file
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# Convert SVG To Favicon
The imagemagick `convert` CLI tool can convert an SVG file into a transparent
favicon (ICO) file with the different standard sizes.
Assuming the background that we want to make transparent is white, then include
`-transparent white` and then to resize the icon include `-define
icon:auto-resize ...`. Point to the `image.svg` to be converted and specify the
name of the output file (`favicon.ico`).
```bash
$ convert image.svg -transparent white -define icon:auto-resize=16,32,48,64,128 favicon.ico
```
We can then use the `identify` CLI to inspect the `favicon.ico` file to see
that the above worked.
```bash
$ identify favicon.ico
favicon.ico[0] ICO 16x16 16x16+0+0 8-bit sRGB 0.000u 0:00.002
favicon.ico[1] ICO 32x32 32x32+0+0 8-bit sRGB 0.000u 0:00.004
favicon.ico[2] ICO 48x48 48x48+0+0 8-bit sRGB 0.000u 0:00.004
favicon.ico[3] ICO 64x64 64x64+0+0 8-bit sRGB 0.000u 0:00.004
favicon.ico[4] ICO 128x128 128x128+0+0 8-bit sRGB 99678B 0.000u 0:00.003
```
[source](https://www.joshmcarthur.com/2024/06/19/Auto-resizing-images-for-.ico-files.html)