⚡ 10-second version
Export a chat from WhatsApp, drop the _chat.txt into tooladda.online/whatsapp-chat-analyzer.html, and get message counts, activity heatmaps by hour and weekday, a word cloud, emoji rankings and response-time stats.
❗ Important
This is the tool where "no upload" stops being a nice-to-have. A chat export is years of private conversation between real people — some of whom never agreed to anything. Every message is parsed inside your browser. Nothing is transmitted, nothing is stored, and closing the tab ends it.
📤 Getting the export right (and the format gotcha)
In WhatsApp: open the chat → ⋮ / chat name → Export chat → Without media (a with-media export is enormous and the analyzer only needs the text).
You'll get _chat.txt — or WhatsApp Chat with Name.txt — and its format differs by platform, which is why many analyzers fail on half of all exports:
| Platform | Line format |
|---|---|
| iOS | [15/01/2024, 21:04:33] Rahul: message text |
| Android | 15/01/2024, 21:04 - Rahul: message text |
The date order also follows the phone's locale — 15/01/2024 in most of the world, 01/15/2024 on a US-configured device. Get that backwards and every chart is wrong, silently: your "busiest month" is nonsense. This parser detects the platform format and the date ordering rather than assuming one.
Also in the file: system lines (Messages and calls are end-to-end encrypted, X added Y, image omitted) that are not messages from anyone. Counting those as messages inflates whoever happened to create the group.
🧭 How it works
✨ What's inside
| ### 📊 Per-person breakdown Messages, words, average message length, media count. In a group of twelve, it's usually three people doing 80% of the talking — and now you can prove it. | ### 🕐 Activity heatmaps By hour of day, day of week and month. The hour-of-day chart is the interesting one: it shows the actual rhythm of a friendship or a team. |
| ### ⏱️ Response times Median time to reply, per person. Genuinely revealing, and the stat most people open this tool to find. | ### 😂 Emoji rankings & word cloud Most-used emoji per person, and the words that dominate the conversation. This is the part people screenshot. |
🛠️ What people use it for
| Situation | What they find |
|---|---|
| 🎁 Anniversary or birthday gift | "We've sent 47,000 messages" — printed as a chart. |
| 👥 Group chat wrapped | Year-in-review stats to post back into the group. |
| 💼 Work group audit | Whether a "quick coordination" group is eating everyone's evenings. |
| 📈 Personal curiosity | Your own activity pattern — often not what you assumed. |
| 🎓 Data-viz practice | A real, messy dataset you already have. |
| 📉 Noticing a drift | When a conversation started thinning out. |
📖 Four steps
1. Export → WhatsApp → chat → Export chat → WITHOUT media
2. Open → tooladda.online/whatsapp-chat-analyzer.html
3. Drop → the _chat.txt file
4. Explore→ charts, rankings, response times
▶ Analyze now — tooladda.online/whatsapp-chat-analyzer.html
⚠️ Warning
A group chat export contains other people's words. Local processing protects it technically — it doesn't decide the ethics for you. Sharing a stats screenshot back into the group is usually fine and fun. Analysing someone's chat without their knowledge, or publishing message content, is not. Think before you screenshot.
💡 Tip
Always export without media. The with-media export can run to gigabytes and adds nothing — the analyzer reads the text file, and media just show up as
image omittedlines it counts for you anyway.
❓ FAQ
Is it free? Are my messages uploaded?
Free, and no — every message is parsed inside your browser. Nothing is transmitted or stored. Open the Network tab while it runs and you'll see it.
How do I export a chat from WhatsApp?
Open the chat → ⋮ or the chat name → Export chat → Without media. You'll get a .txt file.
How big a chat can it handle?
Limited by your device's memory. Exports with hundreds of thousands of messages are workable on a normal laptop — and would be a serious privacy problem to upload anywhere.
Does it work with iOS and Android exports?
Yes — the two use different line formats, and the parser detects which one you have.
My dates look wrong. Why?
Date order follows the exporting phone's locale (DD/MM vs MM/DD). Check the detected setting; getting it backwards quietly corrupts every time-based chart.
Can it read a chat backup or a database file?
No — only the plain text export. Encrypted backups aren't readable, and that's by design.
Does it work on group chats?
Yes, with per-participant breakdowns. Groups are where the stats get most interesting.
🔬 Under the hood
- Vanilla JavaScript parser handling both iOS and Android export formats, with locale-aware date detection.
- System and media-placeholder lines are classified separately so they don't inflate message counts.
- Charts rendered client-side; no analytics library phoning home with your data.
- No upload endpoint exists. Works offline once loaded.
Originally published on ToolAdda, where WhatsApp Chat Analyzer runs free in your browser — nothing is uploaded, nothing leaves your device.
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