Quick Render Combinations is an add-on from Blender.Fun for comparing different render settings without changing each value and rendering by hand. It's built to save time when you want to test a range of settings against each other.
The workflow runs from the input fields directly. Hover over a field, press S to add it to your combinations, change the value and press S again, then repeat these steps as many times as you like. The number of renders is a multiplication of the changes made to each field — change three fields three times each and you get 27 renders. If you want, all the changed values can be burnt into the resulting image, with the option set in the render result.
The add-on supports Blender 4.1, 4.2 and 4.3 and is released under the GPL license. Documentation is included, and a demo video is available.