I built a 100% client-side toolset because I’m tired of uploading my data to random servers

Hi everyone,

I’m the maker of CryptoWave. Like many of you, I often need to convert an audio file, compress an image, or encrypt some text quickly.

But every time I Googled for these tools, I felt uneasy. Most "free online tools" require you to upload your files to their servers. As a developer, I kept thinking: Why should I send my private data to a server just to run a simple FFmpeg command or a CryptoJS script?

So, I built CryptoWave (https://cryptowaveapp.com/).

The "secret sauce": It runs entirely in your browser.

• Audio/Video: Uses FFmpeg.wasm to process files locally.

• Crypto: AES/RSA/Hash logic stays on your machine.

• No Cookies/Tracking: I wanted it to be as "clean" as possible.

Tech Stack:

• Frontend: Vanilla JS / HTML / CSS (Keep it fast and lightweight!)

• Hosting: Vercel

• Processing: WebAssembly (FFmpeg.wasm)

What's next? I’m planning to add more developer utilities like a JSON formatter and a Regex tester.

I’d love your feedback:

1. Does the UI feel intuitive to you?

2. Are there any specific "server-less" tools you've been looking for but couldn't find?

Thanks for checking it out!