Explore 56 free, instant, and secure browser-based development utilities. Run entirely in-browser with zero tracking.
Format, beautify, and validate JSON data online with custom indentation.
Compress and minify JSON strings by removing all whitespace and newlines.
Format and beautify HTML files with correct tags nesting and pretty indentation.
Minify HTML templates by stripping unnecessary whitespace, tabs, and line breaks.
Beautify CSS rules, organize selectors, and space out styles neatly.
Compress CSS styles to minimize transmission payload for faster client loading.
Beautify JS and ES6 scripts with clear indent spacing and structural brackets linebreaks.
Compress JS files for optimal client delivery by removing comments and whitespaces.
Format XML data schemas with pretty-printed hierarchies.
Verify and format YAML configurations with accurate spacing blocks.
Beautify SQL statements, capitalize database keywords, and align queries cleanly.
Format, standardize headings, list items, and clean up spacing in your Markdown files.
Encode text strings to Base64 or decode Base64 back into readable UTF-8 text.
Safely encode URLs to escape special characters, or decode encoded web query components.
Convert text to Unicode escape sequences (\uXXXX) or decode escape sequences back into plain UTF-8 text.
Convert special text characters into HTML entities or parse entities back to symbols.
Instantly decode JSON Web Tokens (JWT) to view header metadata and payload data.
Encode text strings into hexadecimal representations, or decode hex strings back.
Convert JSON data configurations instantly to readable YAML structures, or vice-versa.
Convert JSON data configurations instantly to readable XML structures, or vice-versa.
Convert data tables between flat comma-separated values (CSV) and nested JSON object arrays.
Convert XML structure schemas instantly to nested JSON configurations, or vice-versa.
Convert formatted Markdown syntax elements into standard web-compatible HTML tags.
Convert standard nested HTML layouts into clean, easy-to-read Markdown documentation files.
Convert plain static HTML blocks into clean React JSX components with camelCased attributes and style objects.
Convert standard CSS rules and selector declarations into modern Tailwind utility class equivalents.
Convert Unix timestamps in seconds or milliseconds to real calendar date-times, or vice versa.
Convert plain text strings or decimal integers to binary digits and back.
Convert characters to ASCII decimal code points or parse code point lists back to plain text.
Verify if your JSON input matches strict syntax specifications and locate parsing errors.
Perform syntactic and domain checks on individual emails to ensure validity.
Analyze URL structures and check protocol, hostnames, query components, and validation parameters.
Validate HTML tag pairings, nesting structure, attribute format, and check self-closing void elements.
Verify your CSS syntax, balance curly brace blocks, and locate missing property semicolons.
Perform strict XML validation checking tags balance, attributes quotation, and XML specification errors.
Verify YAML syntax indentation blocks, key-value colon whitespace requirements, and quote balance.
Validate regular expression patterns for syntax errors, check compiling flags, and scan for ReDoS vulnerabilities.
Decode and strictly validate JWT structures, examine exp, nbf, and iat timestamps, and list decoded payload claims.
Generate secure, cryptographically random RFC4122 standard v4 UUIDs bulk or singly.
Generate cryptographically strong passwords with customizable lengths and character filters.
Generate bulk globally unique Microsoft-compatible GUID identifier strings with customizable bracing and casing.
Generate randomized realistic mock user profiles, complete with names, emails, job positions, and regions.
Generate localized randomized mailing addresses, phone numbers, and coordinates for multiple countries.
Generate cryptographically secure public/private keys and secret API tokens with custom prefixes and lengths.
Shuffle, lock, and generate gorgeous, high-contrast color schemes with instant hex code exporting.
Create smooth color gradients visually and export their fully-optimized CSS linear-gradient code.
Generate standard dummy placeholder text paragraphs for layouts design prototyping.
Generate, parse, and translate cron expressions into human-readable descriptions and trigger schedules.
Generate customizable, high-quality QR codes from text, URLs, or contact info, with instant downloading in SVG or PNG format.
Inspect and parse user agent headers to detect host browser, OS version, engine, and devices.
Inspect, parse, and analyze raw HTTP headers. Detect security scores and generate server-compliant configuration templates.
Lookup detailed geographical location, ISP metadata, coordinates, and timezone of any IPv4 or IPv6 address.
Query real-time global DNS records (A, AAAA, MX, CNAME, TXT, CAA, NS) using secure, high-performance HTTPS resolvers.
Perform instant search and reverse lookups for standard MIME types, media categories, and extensions.
Compare two code files side-by-side or unified diff, highlight additions, deletions, line changes, and analyze code similarity stats.
Build fully-validated campaign tracking URLs with standard UTM parameters, predefined source presets, and markdown exports.