About DevToolBay
30 developer tools that never phone home.
What this is
DevToolBay is a suite of 30 browser-based utilities covering Encode & Decode, JSON & Data, Text Tools, Converters, Crypto & Security, Generate & Media. Each tool does one job with no clutter: paste, see the result, copy or download. There is nothing to install, nothing to sign up for and nothing to pay.
Why everything runs locally
Client-side processing means your data never leaves your device — you can inspect internal payloads, tokens, config files and credential-shaped strings without sending them to anyone. It also makes the tools instant and available offline once a page is cached.
How it is built
Static HTML, one stylesheet, small vanilla scripts. No frameworks, no build-time bloat, no dependencies phoning home. The whole site renders for reading with JavaScript disabled and only needs it for the interactive tool panels.
The guides
Beyond the tools there is a library of practical guides on encoding, JSON, security and naming — each written to be read in under five minutes, each linked to the tool that solves it. Start at the guides and articles index.
Feedback
Found a bug or want a tool added? admin@devtoolbay.com.