PromptPerfect

The open-source prompt optimizer that teaches you why

Paste Prompt

Optimize

Learn Why

Free. Open-source. Your API key never leaves your browser.

Works Everywhere

Use PromptPerfect in the browser, on any site with our extension, or from your own stack via the API.

Full optimizer workspace: paste a prompt, pick a mode, and learn why the rewrite works.

Optimize prompts where you already work—ChatGPT, Gmail, and more.

Load unpacked or install from the Web Store—see docs.

POST your draft prompt and stream back an optimized version from your backend or scripts.