JSON Helper Pro

Format, explore, search, validate and compare JSON with a fast, VS Code-style viewer.

JSON Helper Pro turns any JSON into something you can actually read and work with — no more squinting at a giant blob of text. FEATURES • Pretty print & minify — instantly reformat JSON with 2/4-space or tab indent • Collapsible tree view — expand/collapse objects and arrays, with object/array size shown inline • Syntax highlighting — VS Code-style colors for keys, strings, numbers, booleans and null • Instant validation — see exactly which line and column an error is on, with a plain-English explanation • Search — find property names or values, jump between matches with next/previous • JSON Path — click any value to see its full path (e.g. $.users[4].address.street) and copy it • Copy anything — a key, a value, a whole object, or its path, in one click • Compare Mode — diff two JSON documents side by side with synced scrolling and added/removed/changed/moved highlighting • Sort object keys alphabetically • Drag & drop a .json file, or open one from disk • Auto-detects raw JSON pages and API responses as you browse, and replaces them with the viewer • Right-click any selected text on a page to open it, pretty-print it, or validate it • Dark/light theme (auto-matches Chrome), adjustable font/size/indent, word wrap • Built for large files — 20MB+ JSON stays smooth with lazy-loaded tree and text views Great for developers working with API responses, config files, and application data who want a fast, VS Code-style JSON viewer without leaving the browser.