Promptera

by matth3w · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 19 Oct 2026

Overlay prompt optimizer for Claude, ChatGPT, and Gemini

Users

0 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#246K

#205K among extensions

Version

0.1.1

updated 9 Jul 2026

Users

monthly, 4 months

Latest, 19 Oct 2026: 5 usersMove the mouse over the chart for any month

Ratings count

monthly, 4 months

Latest, 19 Oct 2026: 5 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Promptera

Promptera — AI Prompt Optimizer Promptera adds a optimization button directly to your favorite AI chat interfaces — Claude, ChatGPT, and Gemini — so you can optimize your prompts before you send them. Choose from three modes: Rewrite for Clarity — makes your prompt cleaner and more specific Add Context — adds role, format, and tone guidance Alternatives — generates 3 different versions of your prompt Powered by your own free Gemini API key. No subscriptions, no data collection, no middleman.