If you unlock a "Shadow Achievement" like "Cheated Cookies Taste Awful" (which appears when you use an editor), the tool will ask you if you want to "Hide Cheater Markings." Toggle this ON to keep your profile clean for the leaderboards.
Using the Cookie Clicker Save Editor 2031 is relatively straightforward. Here's a step-by-step guide: cookie clicker save editor 2031 full
Alternatives that satisfy the same needs If you unlock a "Shadow Achievement" like "Cheated