Free Online JSON Viewer

The BracketView JSON workspace at app.bracketview.in is ad-free — including the free tier. This marketing website (bracketview.in) may display third-party advertisements to help support free core tools.

BracketView is freemium. Core workspace tools — viewer, formatter, validator, tree, graph, node, table, JSONPath, diff, schema, and Webhook Tester — are free with no signup required. The UI is in nine languages. Free accounts include 5 MB uploads, 5 snapshot links per month, 20 AI actions per month, and Webhook Tester with 3 endpoints, 25 requests each, and 2-day retention. Pro unlocks AI without a monthly cap, 50 MB uploads plus Performance Mode, unlimited encrypted snapshot links (up to 2 hours), and higher webhook caps. Node, Table, and languages stay free.

Core tools — viewing, formatting, validation, JSONPath, and jq — run locally in your browser. Optional features (encrypted snapshot links, AI-assisted repair and conversion, Webhook Tester, and signed-in history previews) send or store data on BracketView servers or AI providers when you use them. Review the privacy policy before pasting sensitive data into those features.

Pro is $3/month or $2.25/month billed annually. It includes 50 MB uploads plus Performance Mode for large payloads; unlimited snapshot links up to 2 hours; AI without a monthly cap (Fix, Explain, Types); and Webhook Tester with 25 endpoints, 5,000 captures each, and 30-day history. Viewer tabs — including Node and Table — stay free.

Performance Mode is a Pro-only setting that optimizes parsing and rendering for large JSON files (up to 50 MB). It keeps tree, graph, node, table, and editor views responsive on heavy payloads. Node and Table stay available on Free — upgrade to Pro when the file is huge.

Free accounts can upload documents up to 5 MB on the web. Pro raises the web limit to 50 MB. The Windows app opens local files up to 200 MB — the web Free cap does not apply there.

The best free online JSON viewer depends on the job: JSONLint for a one-shot validate-and-format pass, JSON Editor Online for a classic tree-and-code editor, JSONCrack for a graph of nested data, and BracketView when you want a free browser workspace with text, tree, graph, node, and table views, JSONPath, jq, diff, schema tools, nine UI languages, and an ad-free app. Core viewing in BracketView runs in the browser with no install.

Paste your JSON into BracketView at app.bracketview.in. The real-time validator instantly highlights bracket mismatches, trailing commas, and unquoted keys as you type. For schema validation, use the Schema Validator tool to confirm data against OpenAPI definitions or custom JSON Schema rules.

Open BracketView, paste your raw JSON, and click Format. The formatter beautifies JSON with readable indentation and consistent spacing in one click. You can also minify JSON for production payloads.

Yes. BracketView supports JSONPath expressions (like $.store.book[*].author) and a full JQ filter playground powered by WebAssembly. The AI Query Assistant lets you describe what you need in plain English and generates a valid jq filter instantly.

Not for core tools. Viewing, formatting, validating, and querying with JSONPath or jq run locally in your browser. AI-assisted features, snapshot links, Webhook Tester, and signed-in history previews do send or store data when you use them — review the privacy policy before using those with sensitive data.

BracketView's AI JSON Fixer analyzes malformed JSON — missing brackets, trailing commas, unquoted keys, unescaped characters, and truncated payloads — and reconstructs valid, well-formed JSON while preserving your original data and structure as closely as possible. It's designed for messy API responses, hand-edited configs, and copy-pasted payloads that fail standard parsers.

Webhook Tester gives you a disposable public webhook URL so you can capture and inspect live HTTP requests from Stripe, GitHub, Shopify, or any service that POSTs events. Free: 3 endpoints, 25 requests each, 2-day retention. Pro: 25 endpoints, 5,000 captures each, 30-day history. Endpoints are public and history is short-lived by design. Open it at app.bracketview.in/webhooks.