I've been a developer for years. Like most people, I had a handful of online tools I used daily — JWT decoders, JSON formatters, Base64 encoders. Open a tab, paste, copy, close.
Then one day I caught myself pasting a production API token into some random website I'd never heard of.
I didn't know who built it. I didn't know where my data went. I just trusted it because it showed up in Google search results.
That bothered me enough to build something better.
What I built
ToolDock is a collection of developer tools that run entirely in your browser. No backend, no accounts, no data sent anywhere. You can verify this yourself — open DevTools Network tab while using any tool and you'll see zero outbound requests with your data.
Current tools:
- JWT Decoder
- Base64 Encode/Decode
- JSON Formatter + Validator
- Regex Tester
- CRON Expression Parser
- Color Converter (HEX ↔ RGB ↔ HSL ↔ HSB)
- UUID Generator, Text Diff, Timestamp Converter
- and more (19 total)
What I learned building it
Browser APIs are powerful enough for almost everything. JWT decoding, Base64, regex testing, color conversion — none of this needs a server. We just got used to sending data somewhere because it was easier to build that way.
Privacy as a feature actually resonates.
When I tell developers "your JWT never leaves your browser", I see immediate understanding. They've had the same paranoid moment I had.
SEO for tools is different from SEO for content.
Each tool is essentially a landing page for a specific search query. "JWT decode online", "Base64 encoder browser" — these have real search volume and your tool page is the answer.
What's next
Adding 2-3 new tools every week. Hash generator, Markdown previewer, Number base converter are next.
If you want to check it out: tooldock.org
And if there's a tool you wish existed as a private browser-based version — I'd genuinely love to hear it in the comments.
Built with Next.js + TypeScript + Tailwind,
deployed on Vercel. Happy to answer any
technical questions.
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