A Chrome Extension (Manifest V3) that lets you save specific ChatGPT prompt/response pairs and jump back to them later.
Save Chat button to assistant replies inside ChatGPT.chrome.storage.local.The extension stores bookmarks under the bookmarks key in chrome.storage.local.
{
"id": "uuid",
"title": "Prompt preview",
"textSnippet": "First 100 chars of the assistant response",
"chatUrl": "https://chatgpt.com/c/...",
"timestamp": 1712345678901,
"anchorIndex": 12,
"promptSnippet": "First 100 chars of the user prompt"
}
The first five fields satisfy the requested storage contract. anchorIndex and promptSnippet are included as extra fingerprint data to improve matching reliability.
manifest.json: MV3 manifest with only storage and sidePanel as named permissions, plus ChatGPT host access.background.js: Enables opening the side panel from the extension action and limits the panel to ChatGPT tabs.content.js: Injects save controls, fingerprints message pairs, and performs search-and-scroll navigation.sidepanel.html: Side panel UI shell and styles.sidepanel.js: Loads chat-specific bookmarks, renders cards, and sends jump requests to the page.