WhatsApp power tools
WhatsApp is great at sending messages and not much else. Export a chat and you get a raw .txt. Save a voice note and you get an .opus file nothing wants to play. These four small apps pick up where WhatsApp stops. Each does one job, on your phone, without uploading your chats or voice notes anywhere.
Pick the tool for the job
Chat Export Studio: PDF
WhatsApp's Export Chat gives you a .txt inside a .zip. Open it in Chat Export Studio and get a paginated PDF with one bubble per message, dates, and who-talks-most statistics. Works with iPhone and Android exports. Parsed on your phone; the chat is never uploaded.
Chat Link & QR Code Maker
Make a wa.me click-to-chat link with a pre-filled message, save it as a printable QR code for a shop window, menu or business card, and set a full-size profile picture that is not cropped. Offline; the number you type stays on the phone.
Voice Note to Text
Share a WhatsApp voice note to the app and read the transcript seconds later, in the language it was spoken. The speech model ships inside the app, so it works offline and the audio never leaves the device. Copy the text or share it as .txt.
Opus to MP3 Converter
WhatsApp voice notes are .opus files that many players, editors and car stereos will not open. Convert one or a hundred of them to MP3 or WAV on the phone and share the result. No upload, no account.
Why on-device matters for WhatsApp files
WhatsApp chats are end-to-end encrypted while they travel. The moment you export a chat or a voice note and drop it into a website, that protection is gone: the file sits on someone else's server. Every app on this page processes the file on the phone instead. There is no account to create and nothing to delete afterwards.
Free browser tools, no install
On a computer, or just trying it once? These run in your browser and are free.
- Opus to MP3 converter in your browser: Convert .opus voice notes on a computer without installing anything.
- WhatsApp link & QR code generator: Make a wa.me link and a QR code in the browser.
- Full-size profile picture maker: Pad a photo to a square so it is not cropped.
Questions
Are these official WhatsApp apps?
No. They are independent apps built by Vilva Athiban P B. They are not affiliated with, endorsed by, or connected to WhatsApp LLC or Meta Platforms, Inc. They work with files WhatsApp itself lets you export or share: chat exports, voice notes and wa.me links.
Do the apps read my chats or need my WhatsApp login?
No. None of them log in to WhatsApp or read anything on their own. You choose a file in WhatsApp (a chat export or a voice note) and share it to the app. Processing happens on your phone and nothing is uploaded.
Do they work on Android as well as iPhone?
Yes. All four are on the App Store and on Google Play. Use the badges next to each app.
Which one should I install first?
Match it to the job. Need the words from a voice message: Voice Note to Text. Need the audio as MP3: Opus to MP3 Converter. Need a chat as a document: Chat Export Studio. Need customers to message you: Chat Link & QR Code Maker.
These apps are independent utilities built by Vilva Athiban P B. They are not affiliated with, endorsed by, or connected to WhatsApp LLC or Meta Platforms, Inc. WhatsApp is a registered trademark of Meta Platforms, Inc.