HighlightGPT is a lightweight browser extension that adds highlight-to-ask superpowers to ChatGPT. Select any text and instantly ask questions, get explanations, translate replies, or push key answers to ChatGPT’s memory.

It runs on ChatGPT’s native web experience, shows context-aware replies in a slim side panel, and uses zero extra tokens. Upgrade once to remove ads and unlock unlimited memory saves and priority support.