prevent yeoman.io from minifying images - yeoman

Question

So I've been using yeoman.io for my projects and I have a set folder structure for my images. But when I build it changes the file name of my files.
I even use:
$ yeoman build:text
because I want to only minify my css,js and html templates, yet it still minifies the images.
Not sure if im doing something wrong.
EDIT:
I commented out all instances of img in the gruntfile and that seemed to work, but I dont think thats the right way.

Answer 1

You mean image optimization or revisioning? There is no problem to configure GruntFile.js to your own needs. It makes Yeoman/Grunt very powerful, because it is highly adaptable.
If you don't want image optimization, remove the configuration in the img task.
// Optimizes JPGs and PNGs (with jpegtran & optipng)
img: {
},
If you dont want the renaming of image files, remove the img line from the rev task:
// renames JS/CSS to prepend a hash of their contents for easier
// versioning
rev: {
js: 'scripts/**/*.js',
css: 'styles/**/*.css'
},

Answer 2

If you remove the image revving it will bust your cache, you should try to keep the revving and update your JS files instead.
Try updating your usemin block to something like this:
usemin: {
html: ['<%= yeoman.dist %>/{,*/}*.html'],
css: ['<%= yeoman.dist %>/styles/{,*/}*.css'],
js: '<%= yeoman.dist %>/scripts/{,*/}*.js',
options: {
assetsDirs: [
'<%= yeoman.dist %>',
'<%= yeoman.dist %>/images',
'<%= yeoman.dist %>/styles'
],
patterns: {
js: [
[/(images\/.*?\.(?:gif|jpeg|jpg|png|webp|svg))/gm, 'Update the JS to reference our revved images']
]
}
}
}
You should already have the usemin method, just add the js attribute with you js path regex and add the pattern attribute.
This will replace all occurrences of the image in your JS files with the new revved version, so that the clients' browsers don't use a cached image instead of a new one.