GPT Text Replacer

GPT Text Replacer is a small Chrome extension built by the studio behind Onward! Games. It is aimed at a very specific workflow: you have text sitting in a web page field — a draft comment, a paragraph in a CMS, a support reply — and you want it rewritten without leaving the page. After entering your OpenAI API key, choosing a model and setting a system prompt, selecting text triggers the model and the extension writes the result back over your selection.

The point is friction. Most AI writing helpers force you to open a separate chat, paste your text, copy the answer and paste it back. This extension collapses those steps into a single selection and replace action inside the browser, which is handy for repetitive editing tasks.

Because it uses your own key, there is no recurring cost from the developer and no third-party service handling your text beyond OpenAI itself. The trade-off is a minimal feature set: there is no history, no multi-turn chat, no preset prompt library and no accounts. It is a single-purpose utility, and the current listing is quite old with a very small audience, so treat it as a lightweight personal tool rather than a maintained product.