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Free tool

Free Duplicate Prompt Checker

Comparing prompts from two sources? Paste both lists and get one clean set with the duplicates removed.

Separate each prompt with a line of --- (three dashes).

Separate each prompt with a line of --- (three dashes).

Frequently asked questions

How do I find duplicate prompts?

Paste your two lists of prompts into the boxes above, with a line of --- between each prompt, then press Find duplicates. The tool compares them, shows how many are repeated, and gives you one clean combined list with the duplicates removed.

Is the duplicate prompt checker free?

Yes, completely free, with no sign up and no card. It runs entirely in your browser.

Do my prompts get uploaded anywhere?

No. Everything happens on your own device in the browser. Your prompts are never sent to a server, so nothing leaves your machine.

What counts as a duplicate?

Two prompts count as duplicates when their text matches after ignoring capitalization and extra spaces. For prompts that mean the same thing but are worded differently, REPONA's AI can catch those across your whole library.