QUICK ANSWERStart with the tool that matches your immediate input.
Open Adjust Image Brightness first when its stated purpose matches the result you need now. Use Adjust Image Contrast only when it solves a separate next task.
This guide is for creators, marketers, designers, and website owners. Start with Adjust Image Brightness when your immediate task is to use the Adjust Image Brightness to complete this file task privately in your browser. Move to Adjust Image Contrast only when you also need to use the Adjust Image Contrast to complete this file task privately in your browser.
The goal is not to run two tools automatically. It is to finish the first narrow task, inspect its result, and then decide whether Adjust Image Contrast solves a genuinely different next step.
Both tools sit in Image & Design, but they handle different inputs or outcomes. Keeping those roles separate reduces repeated work and makes verification easier.