Free tools that run in your browser
Each of these does one small job and does it on your own device. There is no account, no upload and no queue, because there is no server doing the work.
WhatsApp Link & QR Code Generator
Turn any phone number into a wa.me click-to-chat link and a printable QR code, with an optional pre-filled message. Free, no sign-up, runs entirely in your browser.
Open the toolFull-Size Profile Picture Maker
Pad any photo to a perfect square so your profile picture is not cropped. Choose a blurred or solid background, then download. Free, in your browser, nothing uploaded.
Open the toolOpus to MP3 Converter
Convert .opus and .ogg voice notes to MP3 or WAV in seconds. Several files at once, no upload, no sign-up, no waiting. Runs entirely inside your browser.
Open the toolWhy these run in the browser
Every one of these jobs is small enough to do on the device you are already holding. Sending a voice note or a photo to a server to do it would be slower, would need an account to stop abuse, and would put your file on someone else's machine for no benefit to you.
So none of them do. Open a tool, use it, close the tab. If you want the same thing on your phone without a browser, each page links to the matching iOS app at the bottom.
The apps
These tools are the browser versions of four iPhone utilities: Chat Link & QR Code Maker, Opus to MP3 Converter, Voice Note to Text and Chat Export Studio. All four do their work on the device, with no account and no server.