22 free tools · JSON Tools
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JSON tools.
Our free JSON tools run 100% locally in your browser, keeping your data private. Whether you need to format, validate, or convert JSON, these tools are fast, secure, and built for developers.
Browse 22 toolsJSON Tools
22 tools · Free to use
JSON Formatter & Validator
Format and validate JSON in your browser. Check syntax, add readable indentation, minify data, and explore nested objects with an interactive tree view.
Data Formats
CSV to JSON Converter
Convert CSV files to JSON format with support for various delimiters and real-time conversion.
Data Formats
JSON to CSV Converter
Convert JSON arrays to spreadsheet-ready CSV with proper quoting and custom delimiters. 100% in your browser.
Data Formats
JSON to TypeScript Converter
Convert JSON objects to TypeScript interfaces instantly with customizable options and clean code generation.
Coding
JSON to TOON
Convert between JSON and TOON format to save 30-60% tokens for LLM prompts with bi-directional conversion.
Data Formats
YAML to JSON Converter
Convert YAML data to JSON format instantly with a 100% offline, client-side tool.
Data Formats
JSON Semantic Diff & Compare
Compare two JSON objects semantically using our privacy-first, client-side tool. Identify structural differences, ignore key order and formatting effortlessly.
Data Formats
JSON Formatter
Format JSON online with consistent indentation and syntax highlighting. Organize API responses and configuration data directly in your browser, without uploads.
Data Formats
JSON Validator
Validate JSON syntax online with browser-local error checking. Find missing commas, invalid quotes, and trailing commas without uploading your JSON.
Data Formats
JSON Editor
Edit JSON online with syntax highlighting, live syntax checks, indentation controls, and a tree view. Your JSON is processed locally in your browser.
Data Formats
JSON Minifier
Minify valid JSON to a compact single line. Remove formatting whitespace, keep spaces inside strings, and copy the result with browser-local processing.
Data Formats
JSON Pretty Print
Pretty print and beautify JSON with two spaces, four spaces, or tabs. Turn compact JSON into readable text and check syntax locally in your browser.
Data Formats
TSV to JSON Converter
Convert tab-separated values into JSON by pasting rows or uploading a TSV file. Free online TSV to JSON converter with headers, preview, and local processing.
Data Formats
JSON Compare
Compare two JSON documents and see differences in their values and structure, with key order ignored. Free online JSON compare tool that runs in your browser.
Data Formats
JSON Diff
Find added, removed, and changed values between two JSON inputs in a side-by-side diff. Free online JSON diff tool with private, browser-local processing.
Data Formats
JSON to TOON Converter
Convert JSON into TOON (Token-Oriented Object Notation) with a live preview and configurable output to cut LLM prompt tokens. Free and runs in your browser.
Data Formats
TOON to JSON
Decode TOON (Token-Oriented Object Notation) back into JSON and review the reconstructed data. Free online TOON to JSON converter, processed locally.
Data Formats
JSON to TypeScript Interface
Generate TypeScript interfaces from a JSON sample with options for optional properties, naming, and exports. Free online converter that runs in your browser.
Coding
JSON to TS
Turn JSON data into TypeScript interface declarations, including nested objects and arrays, ready to review and copy. Free, instant, private JSON to TS tool.
Coding
YAML to JSON
Convert YAML data into formatted JSON with syntax error feedback, entirely in your browser. Free online YAML to JSON converter with one-click copy.
Data Formats
YML to JSON
Convert a .yml document into JSON and inspect the resulting data in your browser. Free online YML to JSON converter, private with no file uploads.
Data Formats
JSON Viewer
View JSON as a collapsible tree, table or formatted text, with search and one-click JSONPath copying.
Data Formats
A quick guide
Choosing the right JSON tools
Choose a formatter when JSON is hard to read, a validator when you need to check syntax, and a comparison tool when you need to find changed values. For spreadsheet work, use JSON to CSV or CSV to JSON and check how nested objects and arrays are represented in the result.
Digital ToolPad brings together 22 free JSON tools in one collection. Open a tool, add your input, and review the result on your device. All tool processing happens in your browser, without uploading your data to our servers for processing.
Are these JSON tools really free?
Yes! All our JSON tools are completely free to use without any hidden costs or subscriptions.
Is my data safe when using these tools?
Absolutely. Our tools run entirely in your browser, so your data never leaves your device. We prioritize your privacy and security.
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