Developer tools

Format and convert JSON and CSV, encode or decode strings, inspect URLs and JWTs, and convert colors and timestamps. Processing runs in your browser, except fetching a sitemap from a link.

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17 tools

Base64 Encoder and Decoder

Convert UTF-8 text and Base64 live with standard or URL-safe alphabets, padding and line-length options.

Color Converter

Preview an opaque color and copy HEX, RGB or HSL with a color picker and selected output formats.

Structured Data

CSV to JSON Converter

Convert CSV live to object or row arrays with optional root wrapping, safe type inference and JSON export.

HTML Entity Converter

Encode sensitive markup or every Unicode character as numeric entities, or decode supported entities to text.

Structured Data

JSON Compare

Compare JSON structures live, swap documents and choose a report limit while retaining complete difference counts.

Structured Data

JSON Formatter

Format JSON live with spaces, tabs or compact output, optional object-key sorting and JSON downloads.

JSON String Escape

Escape or unescape JSON strings with ASCII-only output, reversible conversion and plain-text downloads.

Structured Data

JSON to CSV Converter

Convert JSON records live to CSV or TSV with selected column order, formula protection and local file export.

JWT Decoder

Inspect JWT header or payload JSON locally, with an explicit unverified-signature status and downloadable output.

Number Base Converter

Convert exact signed integers between bases 2 through 36 with letter-case choices and reversible conversion.

Text to Hex Converter

Encode UTF-8 text as hexadecimal byte pairs with separator and case choices, or decode valid UTF-8 bytes.

Unicode Escape Converter

Convert text to UTF-16 or code-point escapes with an optional non-ASCII policy and reversible preview.

Unix Timestamp Converter

Convert Unix time and zoned ISO dates, insert the current time and select a copy-ready UTC or epoch output.

URL Encoder and Decoder

Encode or decode URL components, complete URIs or form values with live output and reversible conversion.

URL Parser

Inspect web URL components and repeated query parameters, or export a query report or encoded query string.

UTM Link Builder

Build campaign links live with optional campaign IDs, lowercase values and preserved destination parameters.

XML Sitemap URL Extractor

Extract sitemap URLs, inspect duplicates and sections, and sort filtered lists before copying or exporting.