JSON formatter

You know the moment: an API hands back 40 KB of JSON squashed into a single line. You paste it into the browser, open yet another online formatter — it coughs up an ad, a cookie banner wakes up, three CDNs phone home — all just to see where the missing comma is. JSONformatter is the opposite of all that. Local. Offline. No accounts. No "Premium" tier. Just a tool that does its job — and does it fast. ✨ WHAT IT DOES ────────────── 🎨 BEAUTIFY — Expands JSON into a readable shape with 2-space, 4-space, or tab indentation. Syntax-highlights everything: strings, numbers, keys, null/true/false — each in its own color. 🪶 MINIFY — Collapses JSON to a single line. When you need to cram a payload into a URL or a log — no whitespace, no line breaks, nothing extra. 🌳 TREE VIEW — Interactive node tree. Collapse and expand branches, navigate large structures without scrolling through thousands of lines. Useful when your JSON is really a tree, not text. 🔀 DIFF — Side-by-side comparison of two JSON documents. Highlights what was added, what changed, what disappeared. Debug API regressions or audit configs — in seconds. 🔁 CONVERT — Transforms JSON into: • YAML — for configs and CI pipelines • XML — for legacy integrations • CSV — for Excel and the data team • Kotlin / Java / Swift — ready-made data-class boilerplate 🧠 PARSE WITH PRECISION — On error, it shows you the exact position: line, column, what was actually expected. The gutter highlights the bad line in red. None of that "Unexpected token at position 4823" nonsense. 📂 FILE INPUT — Copy/Paste to editor or pull it in via "Upload". Big payloads without the lag. 📋 COPY — One tap, and the formatted (or converted) result is in your clipboard. Simple as that. 🌗 LIGHT / DARK — Two carefully tuned themes. Not lazy clones of system colors — designed for long sessions reading code. 🤏 COMPACT MODE — Smaller font, denser layout. When you need to see more at once. 📱 RESPONSIVE LAYOUT — On phone — overlay sidebar and swipes. On tablet — full workspace. Same logic, different density. 🔒 PRIVACY ────────── No servers. No trackers. No analytics. Your JSON never leaves the device. Works offline. Always.