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DevToolbox
51 free developer tools that run entirely in your browser
51 free developer tools that run entirely in your browser — JSON Formatter, JWT Decoder, Regex Tester, Base64, UUID Generator, Hash Generator, Cron Builder, SQL Formatter, and 43 more. Privacy-first: every tool is 100% client-side. Paste API keys, JWT tokens, or private configs — nothing ever reaches a server. Keyboard shortcuts on every tool. One-click example data. Input history. No account. No sign-up. No ads inside the tool area.
Hey PH! 👋 Maker here.
I kept switching between 6–7 different tool websites while working —
one for JWT, another for JSON, another for regex. Most of them had
intrusive ads inside the tool area, required sign-ups, or sent your
data to their servers.
So I built DevToolbox as the single tab I keep pinned.
A few decisions I'm proud of:
— All processing is client-side. I went out of my way to ensure
nothing is transmitted, even for tools like SSL Checker and DNS
Lookup (those use a Cloudflare Worker proxy so the API call comes
from the edge, not from your browser leaking your query).
— Keyboard shortcuts everywhere: Ctrl+Enter to run, Ctrl+K to clear.
— Example button on every tool — one click loads real sample data
so you can see what the tool does immediately.
What's coming next:
→ More tools (HTTP Header Analyzer, TOML↔JSON, JWT Generator with
custom claims)
→ Shareable URLs for all tools (hash-based state, already works in
JSON Formatter and Base64)
→ Offline PWA support
Would love feedback — especially if there's a tool you reach for
daily that I haven't built yet. Happy to prioritize based on demand.
https://freecodtools.dev
About DevToolbox on Product Hunt
“ 51 free developer tools that run entirely in your browser”
DevToolbox was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #142 on the daily leaderboard. 51 free developer tools that run entirely in your browser — JSON Formatter, JWT Decoder, Regex Tester, Base64, UUID Generator, Hash Generator, Cron Builder, SQL Formatter, and 43 more. Privacy-first: every tool is 100% client-side. Paste API keys, JWT tokens, or private configs — nothing ever reaches a server. Keyboard shortcuts on every tool. One-click example data. Input history. No account. No sign-up. No ads inside the tool area.
On the analytics side, DevToolbox competes within Productivity, Open Source and Developer Tools — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how DevToolbox performed against the three products that launched closest to it on the same day.
Who hunted DevToolbox?
DevToolbox was hunted by Henry Y. 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 DevToolbox including community comment highlights and product details, visit the product overview.
Henry Y