PromptLab

Chrome extension for Claude / ChatGPT / Gemini

PromptLab

A lab notebook for your prompts — version history, result notes, and chains.

Add to Chrome

Free to start · No account needed · Pro $5/mo for unlimited

Version history

Every edit is saved as v1, v2… — restore anytime.

Result notes

Log what worked (👍/🤔) per version.

Chains

Reusable multi-step prompt workflows.

Your prompts never leave your device. Everything you create is stored locally. Free plan = zero network traffic.

Read the privacy policy →

Watch your prompts grow

Every save becomes a version — nothing is ever lost.

The History tab — rendered with the extension's actual UI styles.