CRX id
lnaooepnheojbgfeannakjciclekgpai
lnaooepnheojbgfeannakjciclekgpai
Description from extension meta
Agrega fecha y hora local a cada mensaje de ChatGPT.
Image from store
Description from store
How to use
🔹 Install ChatGPT Timestamp from the Chrome Web Store.
🔹 Open ChatGPT (chat.openai.com or chatgpt.com) as usual.
🔹 Every message—yours and the AI’s—will show a subtle, grey date-and-time label.
🔹 Need a cleaner view? Click the toolbar icon once to hide / show timestamps. The choice is remembered the next time you visit.
What it does
ChatGPT Timestamp is a lightweight Chrome extension that automatically adds a local date-and-time stamp to every ChatGPT message and persists those stamps across sessions. No extra clicks, no clutter—just instant context for every question and reply.
Key benefits
🔹 Perfect context – know exactly when you asked a question or received an answer, ideal for research, note-taking, and support logs.
🔹 Works everywhere ChatGPT does – supports both the classic chat.openai.com and the new chatgpt.com domains.
🔹 Locale-aware formatting – timestamps match your browser language (e.g., dd.mm.yyyy hh:mm:ss, mm/dd/yyyy hh:mm AM/PM, etc.).
🔹 Privacy first – all data is stored in chrome.storage.local; nothing ever leaves your device.
🔹 Set-and-forget design – loads automatically, detects new messages in real time, and timestamps them instantly.
🔹 One-click toggle – hide or show labels without refreshing the page.
🔹 Ultra-lightweight – minimal code, zero external APIs, negligible performance impact.
How it works (for the curious)
A content script watches the chat for nodes with data-message-id, assigns each message a unique key (conv-<conversationId>__msg-<messageId>), and stores the first time it sees that key. It then renders the timestamp with Intl.DateTimeFormat, ensuring genuine locale support. A MutationObserver keeps new messages in sync, while a tiny service worker handles the icon’s ON/OFF state across tabs.
Why it’s safe
🔹 No account access – the extension never touches your OpenAI credentials.
🔹 No external requests – everything happens locally, so your chat data stays private.
🔹 Minimal permissions – needs only storage plus host access for ChatGPT pages.
Get started
Click Add to Chrome, open a ChatGPT conversation, and see every message gain a precise, locale-friendly timestamp. Want a distraction-free view? Toggle the icon and the labels vanish until you need them again. Stop guessing when an idea appeared—know it down to the second with ChatGPT Timestamp.
Latest reviews
- (2025-07-06) Aadarsh Raj: works but what if I open it from another device? I wanted a timestamp to know the date of that response after years
- (2025-05-22) Clinton Owen: Didn't work for me, or at least didn't suit my purposes, all it did was show today's date and time on every message, even in chats that were a month or more old.
- (2025-05-19) robert Vinecke: It blows my mind how little OAI seems to care about UX. I had been trying to use customization to append a timestamp and it was rarely accurate or consistent. Would prefer the timestamp above the chat bubbles but this works well enough.
- (2025-05-18) Alex Heiberg: a helpful extension – makes it easy to compare code changes and roll back when needed