Backend Toolkit

Pretty-print and beautify JSON with custom indentation.

Validate JSON syntax and see detailed error diagnostics.

Compress JSON by removing whitespace and show bytes saved.

Diff two JSON documents and list added, removed, and changed paths.

Explore JSON as a collapsible, color-coded tree.

Convert JSON into well-formed, indented XML.

Convert JSON documents to clean, readable YAML.

Flatten a JSON array of objects into a CSV spreadsheet.

Escape special characters for use inside a JSON string.

Reverse JSON string escaping back to readable text.

Explore JSON paths and evaluate simple JSONPath queries.

Infer a JSON Schema from a sample JSON document.

Compare two texts line-by-line with an LCS diff.

Split delimited text into aligned columns and re-join it.

Generate an XML sitemap from a list of URLs.

Convert between CSV and JSON with delimiter and header options.

Convert YAML to JSON and JSON to YAML.

Convert XML to JSON and JSON to XML using the browser's DOMParser.

Convert CSV into a Markdown or HTML table with alignment options.

Convert CSV data into well-formed XML with custom tag names.

Generate SQL INSERT statements from CSV data.

Encode or decode HTML entities in text.

Calculate the difference between two dates, or add/subtract time.

Escape and unescape strings for JSON, JS, HTML, XML, SQL, RegExp, and shell.

Side-by-side line diff of two code snippets with stats.

Validate YAML and preview it as JSON.

Turn CSV data into a paginated, printable table for PDF export.