Sometimes the smallest dev chores are the ones that interrupt flow the most.

I often need a few GUIDs while testing an API, preparing seed data, writing examples, or filling in mock payloads. It is not hard to generate one from the console, but doing it repeatedly gets annoying fast.

So I turned that tiny workflow into a browser tool: GUID Generator.

What it does

The tool is intentionally simple:

• Generate 1 to 20 GUIDs at once
• Switch between uppercase and lowercase
• Keep or remove hyphens
• Add braces when a format needs them
• Copy all generated values in one click
• Restore recent generated batches from local history

That covers most of the cases I run into when I need IDs for JSON payloads, SQL rows, config examples, or test fixtures.

Why I made it a separate tool

A GUID generator is not a big feature. But when a tiny task shows up many times a week, it is worth making it frictionless.

I wanted the flow to be: open the page, choose the format, generate, copy, move on. No login. No backend roundtrip. No extra UI trying to be clever.

You can try the GUID generator here.

Where AI helped

AI was useful here in a practical way. I used it to map the small edge cases first: count limits, casing, hyphen handling, brace formatting, copy feedback, and local history.

After that, I folded the implementation back into the existing Tools Online structure, tightened the TypeScript, and added the multilingual SEO page around it.

For small tools like this, AI is not replacing the product decision. It is more like a checklist partner that helps catch the boring details before they become bugs.

Who it is for

This is for developers who need quick IDs while building, debugging, documenting, or testing. If you regularly paste GUIDs into API mocks, database seeds, sample configs, or test data, this should save a few small interruptions.

It is a small tool, but that is the point. The best utility tools are the ones you can open, use, and forget about.