Does it work for group chats?

Yes. Every person gets a row with messages, words, media, emoji, reply time and how often they start a conversation.

Why are some dates wrong?

WhatsApp writes dates in the format your phone uses. The tool guesses day first or month first from the numbers, and you can switch it by hand if the guess is wrong.

Are my files uploaded?

No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.

Is it free? Are there limits or watermarks?

Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.

Does it work offline?

Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

Home / Data Exports / WhatsApp Chat Analyzer

WhatsApp Chat Analyzer

Stats for an exported WhatsApp chat: who writes most, reply times, busiest hours and days, top words and emoji, with search and CSV.

Free, no uploads, no sign-up. Runs 100% in your browser.

How WhatsApp Chat Analyzer works

Your export is read inside this tab. Nothing is uploaded, no account or login is needed, and closing the tab clears it. Lines are matched against the Android and iPhone export formats in 12 and 24 hour time, and the date order (day or month first) is detected from the numbers. Lines without a date join the message above. Reply time is the typical gap before someone answers a different person, ignoring gaps over 8 hours.

Input: TXT, ZIP. Output: CSV, JSON.

How to use WhatsApp Chat Analyzer

In WhatsApp open the chat, then Export chat, Without media.
Drop the .txt or .zip here.
Read the people table, charts, top words and emoji.
Search messages or download them as CSV or JSON.

Tips

Exports hold your private messages, places and habits. Here they are read inside the tab and never uploaded.
Most services take from a few minutes to a few days to prepare an export, so ask early.
Keep the original ZIP. These tools never change it.

WhatsApp Chat Analyzer FAQ

Does it work for group chats?: Yes. Every person gets a row with messages, words, media, emoji, reply time and how often they start a conversation.
Why are some dates wrong?: WhatsApp writes dates in the format your phone uses. The tool guesses day first or month first from the numbers, and you can switch it by hand if the guess is wrong.
Are my files uploaded?: No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
Is it free? Are there limits or watermarks?: Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
Does it work offline?: Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

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