Small tools that run in your browser
32 formatters, converters, generators and file tools. Nothing uploads, nothing to sign up for.
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JSON Formatter & ValidatorBeautify or minify JSON, validate it and jump straight to the first syntax error. Runs entirely in your browser.JSON DiffCompare two JSON documents and see exactly what changed. Key order and whitespace are ignored, and you can copy the result as a JSON patch.JSON Tree ViewerExplore JSON as a collapsible tree, copy the path of any node, and pull out values with a path expression or a plain text search.JSON to YAML ConverterConvert JSON to YAML and YAML back to JSON, with anchors resolved, multi-document streams handled and a warning for values JSON cannot hold.JSON to CSV ConverterTurn JSON into CSV or CSV into JSON, with nested values flattened into columns, quoted fields handled properly and a preview of the table.JSON to TypeScript & TypesTurn a JSON sample into TypeScript interfaces, Go structs, Rust serde structs, Python dataclasses or Kotlin data classes.JSON Schema Generator & ValidatorBuild a JSON Schema from a sample document, or check JSON against a schema and see every problem with the exact path that failed.XML Formatter & ValidatorPretty print or minify XML and catch mistakes by line and column, keeping comments, CDATA and attribute order exactly as they were.SQL FormatterPretty print or minify SQL for PostgreSQL, MySQL, SQL Server, SQLite, Oracle and more, with keyword case and indent under your control.CSV & Excel ViewerOpen a CSV or Excel file as a sortable, searchable table and export it as CSV, JSON or a workbook. Your file never leaves your device.Text DiffCompare two pieces of text side by side or as a unified list, by line, word or character, with options to ignore whitespace and case.Case ConverterConvert text to camelCase, snake_case, kebab-case, PascalCase, Title Case, sentence case and more, all shown at once.Word & Character CounterCount words, characters, sentences and paragraphs as you type, with reading time, speaking time and the words you use most.Lorem Ipsum GeneratorGenerate placeholder paragraphs, sentences, words or list items as plain text, HTML or Markdown, ready to paste into a mockup.Sort & Clean Up LinesSort, shuffle, reverse, deduplicate, trim and number a list of lines. Every step is a toggle, so nothing is lost.Find & ReplaceSearch and replace text or regular expressions, with live match highlighting, capture groups and a list of every match.Markdown Editor & ViewerWrite or paste Markdown and see it rendered as you type, with tables, task lists and Mermaid diagrams, then copy or download the HTML.Base64 Encode & DecodeEncode text or any file to Base64 and decode it back, with URL-safe output, line wrapping and data URIs. Unicode is handled correctly.URL Encode & DecodePercent encode and decode text for URLs, choosing between escaping a single value or a whole address, and see any URL broken into its parts.JWT DecoderDecode a JSON Web Token to read its header and payload, check the expiry against the clock, and verify an HMAC signature against your secret.Unix Timestamp ConverterConvert a Unix timestamp to a date and back, in seconds, milliseconds or microseconds, in any time zone, with the unit detected for you.UUID GeneratorGenerate UUID v4 and v7, ULIDs, Nano IDs and short IDs in bulk, and inspect any UUID to read its version, variant and creation time.Hash GeneratorHash text or any file with MD5, SHA-1, SHA-256, SHA-512, SHA-3 and CRC32 at once, and check the result against a digest you were given.Password GeneratorGenerate strong passwords or memorable passphrases in your browser, with a clear reading of how long they would take to crack.QR Code GeneratorMake a QR code for a link, Wi-Fi network, contact card, email, phone number or any text, and download it as SVG or PNG.Regex TesterTest a regular expression against your text with live highlighting, a table of every match and its capture groups, and a cheat sheet.Cron Expression ParserRead a cron expression in plain English, see each field explained and the next ten run times in any time zone.Colour Converter & PickerConvert a colour between HEX, RGB, HSL, OKLCH, LAB and CMYK, check its contrast against white and black, and build shades and harmonies.Number Base ConverterConvert between binary, octal, decimal, hexadecimal and any base up to 36, with exact arithmetic for values too large for a normal number.
JSON Formatter & ValidatorBeautify or minify JSON, validate it and jump straight to the first syntax error. Runs entirely in your browser.JSON DiffCompare two JSON documents and see exactly what changed. Key order and whitespace are ignored, and you can copy the result as a JSON patch.JSON Tree ViewerExplore JSON as a collapsible tree, copy the path of any node, and pull out values with a path expression or a plain text search.JSON to YAML ConverterConvert JSON to YAML and YAML back to JSON, with anchors resolved, multi-document streams handled and a warning for values JSON cannot hold.JSON to CSV ConverterTurn JSON into CSV or CSV into JSON, with nested values flattened into columns, quoted fields handled properly and a preview of the table.XML to JSON ConverterConvert XML to JSON and JSON back to XML, keeping attributes and text nodes, with validation errors reported by line and column.TOML to JSON ConverterConvert TOML to JSON and JSON back to TOML, with clear reporting for the values TOML cannot hold, such as null and a non-table root.JSON to TypeScript & TypesTurn a JSON sample into TypeScript interfaces, Go structs, Rust serde structs, Python dataclasses or Kotlin data classes.JSON Schema Generator & ValidatorBuild a JSON Schema from a sample document, or check JSON against a schema and see every problem with the exact path that failed.JSON Escape & UnescapeEscape text for use inside a JSON string, decode an escaped string back to plain text, or turn a JavaScript literal into strict JSON.XML Formatter & ValidatorPretty print or minify XML and catch mistakes by line and column, keeping comments, CDATA and attribute order exactly as they were.SQL FormatterPretty print or minify SQL for PostgreSQL, MySQL, SQL Server, SQLite, Oracle and more, with keyword case and indent under your control.CSV & Excel ViewerOpen a CSV or Excel file as a sortable, searchable table and export it as CSV, JSON or a workbook. Your file never leaves your device.
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7Text DiffCompare two pieces of text side by side or as a unified list, by line, word or character, with options to ignore whitespace and case.Case ConverterConvert text to camelCase, snake_case, kebab-case, PascalCase, Title Case, sentence case and more, all shown at once.Word & Character CounterCount words, characters, sentences and paragraphs as you type, with reading time, speaking time and the words you use most.Lorem Ipsum GeneratorGenerate placeholder paragraphs, sentences, words or list items as plain text, HTML or Markdown, ready to paste into a mockup.Sort & Clean Up LinesSort, shuffle, reverse, deduplicate, trim and number a list of lines. Every step is a toggle, so nothing is lost.Find & ReplaceSearch and replace text or regular expressions, with live match highlighting, capture groups and a list of every match.Markdown Editor & ViewerWrite or paste Markdown and see it rendered as you type, with tables, task lists and Mermaid diagrams, then copy or download the HTML.
Base64 Encode & DecodeEncode text or any file to Base64 and decode it back, with URL-safe output, line wrapping and data URIs. Unicode is handled correctly.URL Encode & DecodePercent encode and decode text for URLs, choosing between escaping a single value or a whole address, and see any URL broken into its parts.UUID GeneratorGenerate UUID v4 and v7, ULIDs, Nano IDs and short IDs in bulk, and inspect any UUID to read its version, variant and creation time.Hash GeneratorHash text or any file with MD5, SHA-1, SHA-256, SHA-512, SHA-3 and CRC32 at once, and check the result against a digest you were given.Password GeneratorGenerate strong passwords or memorable passphrases in your browser, with a clear reading of how long they would take to crack.
JWT DecoderDecode a JSON Web Token to read its header and payload, check the expiry against the clock, and verify an HMAC signature against your secret.Regex TesterTest a regular expression against your text with live highlighting, a table of every match and its capture groups, and a cheat sheet.Cron Expression ParserRead a cron expression in plain English, see each field explained and the next ten run times in any time zone.