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dev101.io
One box for every dev utility — runs in your browser
Privacy-first, keyboard-driven hub for 50+ dev tools: format, encode, hash, diff, convert, generate, inspect — all in one place, 100% client-side. Format JSON, decode JWTs, hash strings, convert timezones, build regex — 62 tools in one box. Transforms run in your browser, so your data never leaves the tab. No ads, no signup, no uploads. ⌘K to jump to any tool. Installable, works offline. Free.
Hey Product Hunt 👋
Every developer has the same ritual: google "json formatter", land on a site buried in ads, paste your payload into a box, and quietly hope it isn't being logged somewhere. Then repeat for base64, JWT, timezones, regex, hashes.
I got tired of it and built the box I wanted.
dev101.io is 62 tools across 13 categories — JSON, encoding, crypto, regex, time, network, AI, media — in one keyboard-driven place.
What makes it different:
• Your data stays put. Formatting, hashing, encoding, diffing — all of it runs client-side. Nothing is uploaded. (The network tools — DNS lookup, uptime check, my-IP — obviously make requests. That's their whole job.)
• No ads, no signup, no cookie wall. Analytics is cookieless page-counts only.
• ⌘K from anywhere jumps to any tool in two keystrokes.
• Installable PWA — works offline once loaded.
• Shareable state — inputs live in the URL hash, so you can send a colleague a link without the data hitting a server.
• Every transform is hand-written rather than pulled from a random package — 2,295 tests covering the lot.
It's free and there's no upsell. I'm not building a funnel; I built a utility box and I use it daily.
Would genuinely love to know: which tool is missing? That's how the last dozen got added.
About dev101.io on Product Hunt
“One box for every dev utility — runs in your browser”
dev101.io was submitted on Product Hunt and earned 4 upvotes and 4 comments, placing #95 on the daily leaderboard. Privacy-first, keyboard-driven hub for 50+ dev tools: format, encode, hash, diff, convert, generate, inspect — all in one place, 100% client-side. Format JSON, decode JWTs, hash strings, convert timezones, build regex — 62 tools in one box. Transforms run in your browser, so your data never leaves the tab. No ads, no signup, no uploads. ⌘K to jump to any tool. Installable, works offline. Free.
On the analytics side, dev101.io competes within Software Engineering, Developer Tools and Artificial Intelligence — topics that collectively have 1M followers on Product Hunt. The dashboard above tracks how dev101.io performed against the three products that launched closest to it on the same day.
Who hunted dev101.io?
dev101.io was hunted by Max Dutkin. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of dev101.io including community comment highlights and product details, visit the product overview.
Max Dutkin