JSON Formatter Pro

Auto-format and validate JSON & API responses instantly. Syntax highlighting, tree view, dark mode. Data never leaves your browser.

JSON Formatter Pro - JSON Viewer, Beautifier, Validator, Tree View & Editor. The most powerful JSON tool for Chrome. Stop pasting sensitive API responses into online JSON formatters. JSON Formatter Pro runs 100% locally - your data never leaves your browser. No servers, no tracking, no risk. KEY FEATURES Format & Beautify - Transform minified JSON into clean, indented, syntax-highlighted code. Customizable 2/4/8 space indent. Validate & Debug - Pinpoint JSON syntax errors with exact line numbers. Catch missing brackets, trailing commas instantly. Tree View Explorer - Navigate deeply nested JSON with collapsible, interactive tree. Expand/collapse nodes visually. Minify - Compress JSON payloads for APIs and config files. One-click production-ready output. Auto-Paste - Detects JSON in clipboard when you open the extension. Zero friction workflow. Convert (Pro) - JSON to YAML for Kubernetes/Docker. JSON to CSV for Excel/Sheets. JSON diff. Schema validation. 100% Local - All processing on your device. API keys, tokens, credentials never touch a server. BUILT FOR Frontend devs debugging REST API & GraphQL responses Backend engineers validating JSON payloads DevOps/SRE teams editing Kubernetes, Terraform, Docker configs Data analysts exploring JSON datasets QA engineers validating API schemas Anyone using Postman, cURL, DevTools, or log files HOW IT WORKS 1. Copy JSON from any source 2. Click JSON Formatter Pro icon - auto-pastes from clipboard 3. Click Format - instant beautification with syntax highlighting 4. Switch to Tree View to explore nested objects Shortcuts: Ctrl+Shift+F (Cmd+Shift+F Mac) to format PRIVACY: All local. No servers. No analytics. No tracking. No account. Unlike jsonformatter.org or jsonlint.com, your sensitive data stays on your device. https://zovo.one/privacy/json-formatter-pro FREE: Format, beautify, minify, validate, tree view, copy, download PRO: YAML conversion, CSV export, JSON diff, schema validation Built by Zovo - Developer tools crafted by developers. https://zovo.one | support@zovo.one