Without opening the app
The gist of every new voice note lands on your lock screen, before you open WhatsApp.
WhatsApp WebAlso on desktopNew · Call recording
The best extension for WhatsApp Web.Voice notes, translation, call recording and AI, right inside the chat.
Transcribe voice notes, summarize long chats and reply with AI, without leaving WhatsApp Web. Free to install on Chrome and Edge.
★★★★★5,000+ Chrome Web Store reviews
Sofia Lopezonline
TODAY
2:45
The insurer is offering $8,000 for the car and medical bills and wants a signed release by Friday. Sofia hasn’t signed. She has the therapy invoices, police report and photos, and needs six more sessions. She asks you to review the offer before Friday.
10:42
Translated from Spanish
Hi, can I sign the release the insurance company sent me, or should I wait for you to review it?
Hola, ¿puedo firmar el acuerdo que me mandó la aseguradora o espero a que lo revises?11:02
Por favor, no firmes nada todavía. Envíame el documento y lo reviso hoy mismo.
Original: Please don’t sign anything yet. Send me the document and I’ll review it today.11:03
Type a message
New · Kanban
Your chats, as a board.
Every WhatsApp label or List becomes a column. Drag a chat to the next stage and Kaption changes its label in WhatsApp, so your phone shows it too. No CRM to set up.
New customer3
New order2
Pending payment2
Paid2
Rafael Costaonline
TODAY
Here are the payment details. Tell me when it’s done 🙏9:31
Transfer sent, here is the receipt 🧾9:47
Type a message
Your labels are the columnsWhatsApp Business labels or personal Lists. Choose and order them in Stages.
Drag to moveMoving a chat changes its label in WhatsApp. Your phone shows it too.
Chat beside the boardOpen a chat next to the board, with its stage and move buttons on top.
Stays in WhatsAppNames and messages never leave the page, and privacy mode blurs the cards.
In Chrome, Edge and the Kaption desktop app.
Use cases
One WhatsApp. Every job.
People whose work runs through WhatsApp use Kaption to read, answer and follow up faster. Pick yours to see what changes.
01 / 05
Lawyers
The problem
Clients explain their case in long voice notes and calls, and every date and detail matters.
With Kaption
- Voice-note transcriptsRead a client’s voice note word for word, and find it again by search.
- Call recordingWith the client’s consent, record the call and keep a transcript of who said what.
- Export chatsSave the conversation with transcripts and media for the case file.
Private by designTranscribed on your own computer
Client voice notes are transcribed on your computer. With local transcription on and cloud fallback off, the audio isn’t sent to Kaption’s servers.
Selected hardware onlySee the desktop appCarlos Méndez · Clientonline
TODAY
4:05
The landlord sent the eviction notice on the 3rd, but the lease says 60 days, not 30. I have the signed copy and photos of the damage.
10:42
Thanks, Carlos. Please send the signed lease here and we will review it today.9:16
New in Kaption
WhatsApp on your computer, with every number, recorded calls and your AI assistant
Three things WhatsApp Web does not do on its own.
New
Record WhatsApp calls
The desktop app and the Chrome and Edge extension record voice and video calls and transcribe each side, so you can read who said what.
How call recording worksNewEvery number in one app
Kaption for Mac and Windows keeps several WhatsApp numbers side by side, with App Lock and all of Kaption built in.
Compare desktop appsNewConnect Claude or ChatGPT
Let an AI assistant search your chats, summarize conversations and set reminders, through one MCP link you control.
Set up the MCP connectionEverything in the box
Everything Kaption adds to WhatsApp Web
23 tools for voice notes, translation, follow-ups, contacts and privacy, right where you chat.
Voice-note summaries
Get the gist of a long voice note, then open the full text.
Live translation
Read incoming messages in your language and send replies translated as you type.
Reminders
Type “tomorrow at 9am” and get a nudge to follow up. Repeat daily, weekly or monthly.
Scheduled messages
Write now, send later, once or on repeat.
Privacy mode
Blur names, photos and messages when people are around. Hover to peek.
Screen lock
Protect WhatsApp Web with a PIN or password that locks itself when you step away.
Voice notes
7Voice-note transcripts
Tap Aa on any voice note and read it right in the bubble.
Automatic transcription
New voice notes turn into text on their own, even in chats you haven't opened.
Voice-note summaries
Get the gist of a long voice note, then open the full text.
Interactive transcripts
Words light up as the audio plays. Click one to jump there, or drop the text into your reply.
Search voice notes
Find what someone said: matching transcripts show up in WhatsApp's search.
Transcription settings
Pick a transcription model and one of six summary styles.
Transcripts on your phone
Finished transcripts arrive on your paired phone in the Kaption app.
Translation
2Live translation
Read incoming messages in your language and send replies translated as you type.
36 languages
Pick a language for each chat, or let Kaption detect it.
AI
2Chat summaries
Catch up on a long conversation with an AI summary, right in the chat.
AI assistants (MCP)
Let ChatGPT, Claude or Cursor search your chats and transcripts, with your approval.
Scheduling & follow-ups
3Scheduled messages
Write now, send later, once or on repeat.
Reminders
Type “tomorrow at 9am” and get a nudge to follow up. Repeat daily, weekly or monthly.
Snooze chats
Clear a chat until later, from 15 minutes to next Friday, and it comes back on its own.
Contacts & export
3Export contacts
Save your WhatsApp contacts as CSV for Excel or Google Sheets, or as JSON.
Export group members
Download the member list of any group as CSV or JSON.
Export chats
Save a conversation as a web page with playable voice notes and media, or as CSV with transcripts.
Notifications & sounds
3Transcripts in notifications
Voice-note notifications show the words, so you can read them at a glance.
Custom sounds per chat
Give important chats their own tone. Choose from 14 Kaption sounds, with a preview.
Your own notification sound
Swap WhatsApp's tone for a Kaption sound across your account.
Privacy & appearance
3Privacy mode
Blur names, photos and messages when people are around. Hover to peek.
Screen lock
Protect WhatsApp Web with a PIN or password that locks itself when you step away.
Themes & backgrounds
Choose from 10 theme colors and set your own chat background.
Some tools depend on your plan.
From interruption to insight
The answer reaches you first.
The push notification is the product moment. Open it for every word, then bring the whole conversation into Insights.
Every word, ready to use
Play the audio, follow the transcript, copy it, summarize it, or translate it.
Understand the bigger picture
Analyze an imported conversation when one voice note is only part of the story.
Text the bot to install Send one message. Get your private iPhone or Android setup link.
50,000+Active Users
5,000+User Reviews
4.8 ★Chrome Store Rating
Reviews
Why people choose Kaption AI
Join thousands of users who are already saving hours every week with the highest-rated WhatsApp extension.
★★★★★Dec 24, 2025
“Functional and fast to read; the transcription is honestly better than WhatsApp's own feature.”
★★★★★Dec 24, 2025
“Works like a charm and is super easy to install”
★★★★★Dec 23, 2025
“I've tested it for several days and it's great, especially how the audios are transcribed automatically”
★★★★★Dec 23, 2025
“Excellent tool, saves me so much time every day.”
★★★★★Dec 23, 2025
“Works well for me, exactly what I needed”
★★★★★Dec 23, 2025
“everything's good”
30 seconds
How to install in 30 seconds
Three clicks and the transcribe button is there, on every voice note in WhatsApp Web.
Open the Chrome Web Store listing
Go to the Kaption AI page in the Chrome Web Store. On Microsoft Edge, open the Edge Add-ons listing instead.
chromewebstore.google.comClick "Add to Chrome"
Confirm "Add extension" in the dialog your browser shows. It downloads in a couple of seconds and there is nothing to configure.
Open web.whatsapp.com and pin it
Reload WhatsApp Web and Kaption appears in your chats. Pin it from the puzzle-piece icon in the toolbar to keep it one click away.
web.whatsapp.com
Add to Chrome
Installing is free, and it works on Chrome, Edge and other Chromium-based browsers.
FAQ
Frequently asked questions
What people ask us before installing Kaption AI.
Is Kaption AI free?
Yes. Installing the extension is free and you can start transcribing voice notes right away, with no credit card. The optional Basic and Pro plans add unlimited transcriptions, unlimited translation sessions, smart transcription and more scheduled messages.
Is it safe? What data does the extension access?
The extension only runs on WhatsApp Web and works with the chats you already have open there. Your history stays in encrypted storage on your own device — no message content is kept on Kaption's servers. Audio you choose to transcribe is sent for processing and discarded as soon as the text comes back, and your conversations are never used to train AI models.
Does it work with WhatsApp Business?
Kaption adds its features to web.whatsapp.com, so it works with whichever account is signed in to that tab. It is a browser extension rather than an integration with the official WhatsApp Business API, so it does not connect to Cloud API numbers.
Does it work on Microsoft Edge?
Yes. Kaption AI is published in the Microsoft Edge Add-ons store, and the install button on this page switches to "Add to Edge" when you browse in Edge. Other Chromium-based browsers that can install from the Chrome Web Store work too.
Which languages does transcription support?
Dozens. Voice notes are transcribed in the language they were recorded in — English, Spanish, Portuguese, French, German, Italian, Turkish, Chinese, Japanese and many more — and live translation covers more than 90 languages.