JSON tools that run entirely in your browser
Format, compare, repair, convert, and explore JSON — 12 focused tools, no sign-up, nothing uploaded. Your data never leaves your device.
Preview JSON as beautified text, a table, a relationship diagram, or a tree — switch views instantly.
/json-preview
Paste JSON and instantly view it as a readable table — export array data straight to CSV.
/json-to-table
Diff two JSON documents and see every added, removed, and changed value.
/json-compare
Build and edit JSON visually — add keys, change types, rename fields — no raw syntax.
/json-editor
Escape raw text into a JSON string literal, or unescape one back to plain text.
/json-escape-unescape
Format, validate, and minify JSON instantly in your browser — no upload, no signup.
/json-formatter
Analyze a JSON document's size, depth, type breakdown, and duplicate keys.
/json-inspector
Automatically fix broken JSON — trailing commas, single quotes, unquoted keys.
/json-repair
Generate TypeScript, Go, Python, Java, Kotlin, Rust, C#, or PHP types from JSON.
/json-to-code
Convert JSON arrays to CSV and back, with type inference and quoting.
/json-to-csv
Convert JSON to XML and back, with automatic root-element wrapping.
/json-to-xml
Explore JSON as a collapsible, searchable tree instead of a flat text block.
/json-tree-viewer