Browse developer tools by category with support for multiple language interfaces and quick search.
Format, validate, and explore JSON in your browser with a tree view, exact error lines, and JSONPath, with nothing uploaded
Paste or open JSON and get a collapsible tree plus validation pinned to the exact line and column. Format, minify, sort keys, repair invalid JSON in one click, search, and copy JSONPath. Large integers keep their precision, files up to 10MB stay interactive, and everything runs in your browser.
Compare two JSON documents online: key order and indentation ignored, every addition, removal, and change listed by JSONPath, nothing uploaded
Paste two JSON documents and see what actually changed. Key order and indentation are ignored by default, a structured list reports additions, removals, and changes by JSONPath with both values, side-by-side and unified views are one click apart, large integers keep their precision, and everything runs in your browser.
JSON and YAML format conversion, supports syntax highlighting and history tracking
Free online JSON YAML conversion tool. Supports bidirectional conversion between JSON and YAML, real-time syntax validation, code highlighting, suitable for configuration files, Kubernetes, Docker Compose and other scenarios.
Convert JSON to PHP array online with [] or array() output and nested data support
Free JSON to PHP array converter online. Paste JSON and generate PHP array code with short [] or long array() syntax, nested objects, associative arrays, and Laravel or Symfony-ready examples. You can also turn PHP arrays back into JSON in the browser with no uploads.
Free online JSON to Python dictionary tool - instant conversion, supports bidirectional conversion
Free online JSON to Python dictionary converter. Supports bidirectional conversion between JSON and Python dict, correctly maps True/False/None, provides Django, Flask, and FastAPI framework code snippets. 100% browser-side processing, no data uploads.
Free online JSON to Java class tool - supports Jackson, Gson annotations and Lombok
Free online JSON to Java POJO class generator. Automatically generates Java class code, supporting Jackson @JsonProperty and Gson @SerializedName annotations, Lombok @Data, nested objects and arrays. Customize class name, package name, and getter/setter. 100% browser-side processing, no data uploads.
Free online JSON to C++ converter - Support nlohmann/json, RapidJSON, Boost.JSON
Free online JSON to C++ converter. Automatically generates C++ struct/class code, supporting nlohmann/json, RapidJSON, Boost.JSON and other libraries. Compatible with C++11/14/17/20 standards, supports custom naming styles, indentation, and namespaces. Provides Unreal Engine integration examples. 100% browser-side processing, no data uploads.
Batch convert, history tracking, support nested JSON structures
Free online JSON to CSV conversion tool. Supports batch file conversion, custom delimiters, flattening nested JSON, and conversion history. 100% browser-side processing, no data uploads.
Convert complex JSON to editable XLSX with online preview, custom headers, and data mapping
Free online JSON to Excel converter. Flatten nested JSON, detect API array roots, customize headers, apply data mapping transforms, edit the spreadsheet preview, and export XLSX locally in your browser.
Convert Excel or CSV to JSON with multi-sheet support, field picking, and type fidelity
Free online Excel to JSON converter. Upload an .xlsx file or paste a table copied from Excel or WPS. The first row becomes the keys, and you get an array of objects with multi-sheet support, column selection, empty-cell and date policies, and long IDs that keep every digit — all processed locally in your browser.
Validate XML online with DTD and XSD schema checks plus formatting tools
Free XML validator online. Validate XML syntax, check XML against DTD or XSD schema rules, format documents, and convert XML to JSON for debugging API responses, feeds, and config files. Everything runs locally in your browser for private validation.
Support Base64 encoding and decoding for text and files, can preview images
Support standard Base64 and URL-safe formats. Encode text or files, automatically recognize and preview image content, and save history records.
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