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SyntaxMaster.dev
The dev toolbox the internet forgot to modernize — until now
Juggling 8 different sites to format JSON, decode a JWT, diff configs and run a regex? SyntaxMaster does all of it. Your formatter looks like 2009? SyntaxMaster is dark mode, mobile-ready, designed for today. Nervous pasting a JWT into a random online tool? All processing runs in your browser — nothing uploads unless you share. Need TypeScript from that API response? Paste JSON, get TS, Go, Python, Java, Kotlin, Rust, PHP or Swift. Syntax-aware diff for 13 languages. No account. No paywall.
I built syntaxmaster.dev because I was tired of my own workflow.
Every debugging session looked the same — 5 or 6 tabs open simultaneously. One for JSON formatting, one for JWT decoding, one for diffing configs, one for regex. Each site had a different UI to learn, different ads to close, and a different answer to "does this actually send my data somewhere?"
🧰 What started as a JSON formatter grew into 60+ tools as I kept adding "one more thing I always reach for." The 13 language-specific diffs came from never finding a decent YAML or SQL diff online that wasn't terrible, behind a paywall, or required opening a full editor just to compare two files.
The design took longer than the tools. I wanted something that felt like a product worth using — dark and light modes, fully responsive, works on your phone. Most dev tool sites look like they were designed when jQuery was new.
It's free and ad-supported — no paywalls. Every tool works without an account, and you can share your work publicly without signing in. Google sign-in is there if you want to manage your saved snippets.
🌎 It's fully available in English and Spanish — a few of my closest developer mates are based in Latin America, same frustrations, same tab-switching, same questions about where their data goes. Felt like the obvious thing to do.
Can I ask a small favour? Open it, try one of your tools, and see if it sticks — syntaxmaster.dev
⭐ Would you bookmark it? If not, what's missing that would make you? I'd love to hear your honest experience.
About SyntaxMaster.dev on Product Hunt
“The dev toolbox the internet forgot to modernize — until now”
SyntaxMaster.dev was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #41 on the daily leaderboard. Juggling 8 different sites to format JSON, decode a JWT, diff configs and run a regex? SyntaxMaster does all of it. Your formatter looks like 2009? SyntaxMaster is dark mode, mobile-ready, designed for today. Nervous pasting a JWT into a random online tool? All processing runs in your browser — nothing uploads unless you share. Need TypeScript from that API response? Paste JSON, get TS, Go, Python, Java, Kotlin, Rust, PHP or Swift. Syntax-aware diff for 13 languages. No account. No paywall.
On the analytics side, SyntaxMaster.dev competes within Productivity and Developer Tools — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how SyntaxMaster.dev performed against the three products that launched closest to it on the same day.
Who hunted SyntaxMaster.dev?
SyntaxMaster.dev was hunted by Ian Mu. 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 SyntaxMaster.dev including community comment highlights and product details, visit the product overview.
Ian Mu
Hey PH 👋
I built syntaxmaster.dev because I was tired of my own workflow.
Every debugging session looked the same — 5 or 6 tabs open simultaneously. One for JSON formatting, one for JWT decoding, one for diffing configs, one for regex. Each site had a different UI to learn, different ads to close, and a different answer to "does this actually send my data somewhere?"
🧰 What started as a JSON formatter grew into 60+ tools as I kept adding "one more thing I always reach for." The 13 language-specific diffs came from never finding a decent YAML or SQL diff online that wasn't terrible, behind a paywall, or required opening a full editor just to compare two files.
The design took longer than the tools. I wanted something that felt like a product worth using — dark and light modes, fully responsive, works on your phone. Most dev tool sites look like they were designed when jQuery was new.
It's free and ad-supported — no paywalls. Every tool works without an account, and you can share your work publicly without signing in. Google sign-in is there if you want to manage your saved snippets.
🌎 It's fully available in English and Spanish — a few of my closest developer mates are based in Latin America, same frustrations, same tab-switching, same questions about where their data goes. Felt like the obvious thing to do.
Can I ask a small favour? Open it, try one of your tools, and see if it sticks — syntaxmaster.dev
⭐ Would you bookmark it? If not, what's missing that would make you? I'd love to hear your honest experience.