Format code, validate and convert structured data, encode values, inspect tokens, test patterns, and generate web configuration in your browser.
Explore free JSON tools, code formatters, code minifiers, encoding utilities, security tools, and web developer generators for faster coding and structured-data tasks.
Free online JSON, CSV, and XML tools to format, validate, minify, and convert structured data quickly.
Free HTML, CSS, and JavaScript formatters for clean indentation, readable source code, debugging, and code review.
Explore categoryMinify HTML, CSS, and JavaScript online by removing unnecessary whitespace and comments for smaller web files.
Explore categoryEncode Base64, URLs, and HTML entities, decode JWT payloads, and generate SHA hashes with browser-based utilities.
Explore categoryTest regex, generate UUIDs, convert Unix timestamps, and create meta tags and robots.txt files online.
Explore categoryUse free online developer tools to format JSON, minify HTML, CSS, and JavaScript, encode data, test regex, decode JWTs, generate hashes, UUIDs, meta tags, and robots.txt files.
Format, validate, sort, and inspect JSON with clear syntax errors and configurable indentation.
Use ToolValidate JSON and remove unnecessary whitespace while preserving the exact data structure.
Use ToolConvert arrays of JSON objects into clean CSV with nested-field flattening and delimiter controls.
Use ToolParse quoted CSV safely and convert rows into structured JSON with type inference and indentation controls.
Use ToolValidate XML and apply readable indentation while preserving elements, attributes, and text content.
Use ToolBeautify HTML markup with consistent indentation, readable nesting, and optional comment preservation.
Use ToolFormat CSS rules, declarations, comments, and nested at-rules into clean readable source.
Use ToolApply conservative indentation and line breaks to JavaScript for faster reading and debugging.
Use ToolReduce HTML size by removing removable comments and collapsing unnecessary whitespace between tags.
Use ToolCompress CSS by removing comments and unnecessary whitespace while preserving strings and values.
Use ToolConservatively reduce JavaScript whitespace and comments for quick testing and lightweight delivery.
Use ToolEncode UTF-8 text to Base64 or decode Base64 back to readable text with validation.
Use ToolEncode or decode URL components and complete URLs with standards-based browser functions.
Use ToolConvert special characters to HTML entities or decode entity references back to readable text.
Use ToolDecode JWT header and payload segments, inspect claims, and check expiration without verifying the signature.
Use ToolGenerate SHA-1, SHA-256, SHA-384, or SHA-512 hashes from text using the browser Web Crypto API.
Use ToolTest regular expressions with flags, review matches and capture groups, and inspect match positions.
Use ToolGenerate one or many RFC 4122 version 4 style UUIDs with case and hyphen controls.
Use ToolConvert Unix timestamps to readable dates or turn a selected date and time into seconds and milliseconds.
Use ToolGenerate clean SEO, Open Graph, and Twitter meta tags from page information with a live code output.
Use ToolBuild a valid robots.txt starting point with user-agent, allow, disallow, sitemap, and crawl-delay controls.
Use Tool