All Developer Tools

Browse all 749 free online developer tools, grouped by category

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Encoders & Decoders

21 tools

Hash & Security

53 tools

Formatters & Converters

86 tools

Web Development Tools

91 tools

Utilities

118 tools

Laravel Tools

16 tools

DevOps & Config

9 tools

HTML Entities

256 tools

HTTP Status Codes

70 tools

Other Pages

3 tools

Formatters & Converters

86
CSS Animation / Loader Generator JSON Formatter SQL Formatter GraphQL Query Formatter XML Formatter YAML Formatter YAML Validator & Linter JSON to YAML Converter YAML to JSON Converter JSON to PHP Array Converter JSON to TypeScript Converter JSON to Laravel Migration Open Graph Preview Generator POPULAR SEO SERP Preview Tool Meta Tag Generator robots.txt Generator sitemap.xml Generator HTML Formatter & Beautifier SVG Viewer & Inspector CSS Gradient Generator Box Shadow Generator CSS Grid Generator CSS Flexbox Generator CSS Specificity Calculator Border Radius Generator CSS Button Generator CSS Clip Path Generator CSS Beautifier & Formatter JavaScript Beautifier & Formatter JSON Validator JSON Schema Validator JSON Schema Faker JSONPath Tester JSON to CSV Converter CSV to JSON Converter Text Case Converter Text Repeater Random Word Generator Remove Accents Palindrome Checker Anagram Solver Random Sentence Generator Text to Morse Code Morse Code to Text Emoji Remover Text Statistics Analyzer Color Name Finder HSL to HEX Converter Random Color Generator CMYK to RGB Converter Color Blindness Simulator WCAG Color Contrast Checker SVG to JSX/React Converter HTML to JSX Converter CSS to SCSS Converter SCSS to CSS Converter HTML Table Generator HTML Form Generator HTML Boilerplate Generator Heading Structure Checker Clipboard Workspace HTML Tag Validator XML to JSON Converter JSON to XML Converter SQL to CSV Converter SQL to JSON Converter CSV Validator CSV Cleaner POPULAR JSON to Python Model JSON to Java Class JSON to C# Class JSON to Go Struct JSON to Zod/Yup/Prisma Schema Parquet Viewer SQL EXPLAIN Formatter Code Complexity Analyzer Email Header Analyzer JSON Viewer Nginx Config Validator Apache Config Validator Email Signature Generator POPULAR Email CSS Inliner Email Subject Line Tester POPULAR #1 HTML Email Template Generator POPULAR UUID Validator User-Agent Parser

Web Development Tools

91
Country Info Lookup GDPR Cookie Consent Generator Web Vitals Calculator QR Code Generator Google Fonts Preview & Pairing POPULAR Barcode Generator Lorem Ipsum Generator Image Placeholder Generator Performance Budget Calculator List of MIME Types POPULAR #1 What Is My IP Address CORS Tester & Inspector WebSocket Tester cURL Command Builder HTTP Header Parser API Request Builder GraphQL Query Tester POPULAR JSON Webhook Tester Webhook Signature Validator Web Dev Tools Tailwind Tools All Tools POPULAR Regex Tester & Visualizer Regex Generator from Text Diff Checker & Text Compare Slug / URL Text Generator Markdown to HTML Markdown Table Builder HTML to Markdown HTML to Plain Text REM to PX Converter PX to REM Converter YAML to TOML Converter TOML to YAML Converter INI to JSON Converter SVG to PNG Converter CSS to Tailwind Converter SVG to CSS Background Pattern CSS Glassmorphism Generator CSS Neumorphism Generator CSS Gradient Text Generator CSS Gradient Border Generator CSS Scrollbar Customizer CSS Skeleton Screen Generator CSS Progress Bar Generator CSS Tooltip Generator CSS Ribbon Generator CSS Divider Generator CSS Avatar Generator CSS Badge Generator CSS Card Generator CSS Blob Generator CSS Wave Divider Generator Tailwind Color Palette Generator Tailwind Grid Generator Tailwind Shadow Generator Tailwind Gradient Generator Tailwind Typography Scale Tailwind Color Contrast Tailwind Spacing Reference Tailwind Component Builder Tailwind Class Explorer Tailwind to CSS Converter Tailwind Responsive Breakpoint Preview Tailwind Animation Generator Tailwind Config GUI Generator Tailwind Flexbox Layout Builder Tailwind Transition & Transform Generator Tailwind Filter & Backdrop Generator Tailwind to React/Vue Converter Tailwind Typography Plugin Preview Tailwind Icon Picker & Styler Tailwind Class Formatter API Documentation Generator JSON Schema Generator Mock API Response Generator Fake REST API Generator SQL Query Generator POPULAR SQL Query Builder Database Schema Visualizer ERD Generator Mermaid.js Live Diagram Editor Postman Collection Viewer OpenAPI Viewer Kubernetes YAML Validator Kubernetes Manifest Viewer Kubernetes Resource Calculator Docker Compose Validator Terraform Formatter Terraform Validator Terraform HCL Formatter

Utilities

118
JWT Decoder & Validator SMS Counter Password Generator Check String Length CHMOD Calculator Cron Job Command Generator Git Log Formatter Git Cheat Sheet & Command Generator ASCII Table Reference Changelog Generator README Template Generator Conventional Commit Generator GitHub Issue Template Generator Makefile Generator Test Data Generator Quote Generator Semantic Version Calculator ESLint Config Generator Prettier Config Generator TypeScript tsconfig Generator PWA Manifest Generator JSON to Table Converter CSV to Markdown Table Regex Escape Tool Code Comment Remover JSON to CSV (Nested) HTML Entity Lookup HTML to PDF Converter MIME Type Lookup Cron Expression Generator Cron Expression Parser Shortened URL Checker POPULAR RGB to HEX Converter Epoch Unix Timestamp Converter UUID & ULID Generator Timezone Converter Date Calculator Week Number Calculator Business Days Calculator World Clock Countdown Timer Sunrise/Sunset Calculator Moon Phase Calculator Duplicate Line Remover Text Line Sorter File Extension Lookup File Magic Bytes Reference Random Data Generator Unit Converter Number Base Converter Prime Number Checker Fibonacci Generator Factorial Calculator GCD & LCM Calculator Statistics Calculator Combination & Permutation Calculator Scientific Notation Converter Significant Figures Calculator Code Minifier HTML Minifier CSS Minifier JS Minifier JSON Minifier SVG Minifier XML Minifier SQL Minifier Comment Remover Empty Line Remover PDF Compressor POPULAR PDF Splitter PDF Metadata Editor PDF Page Remover PDF Text Extractor PDF to Image PDF Merger Image to PDF Image Metadata Extractor POPULAR #1 Image Resizer Image Background Remover Code to Image Generator Color Picker & Harmonies Emoji Picker & Search Reference Image Optimizer Image Optimization Analyzer Image Converter Image Cropper Image Watermark Image Merger Favicon Generator Color Palette Extractor Utilities String Utilities npm Dependency Analyzer URL Status Checker Whois Domain Lookup Port Checker IP Geolocation Lookup DNS Lookup DNS Propagation Checker Subnet CIDR Calculator MAC Address Validator & Converter MAC Address Generator & Vendor Lookup Database URL Connection String Generator Credit Card Validator IBAN Validator BIC/SWIFT Lookup ISBN Validator Postal Code Validator POPULAR US ZIP Code Lookup Phone Number Validator VAT Number Validator SSN Validator Email Validator POPULAR Disposable Email Checker CIDR Calculator IPv4 to IPv6 Converter IPv4 Subnet Calculator IPv6 Calculator

HTML Entities

256
HTML Entities POPULAR Special Chars & HTML at sign section sign copyright sign trademark sign vertical bar broken vertical bar backslash slash Latin Letter A with acute A with diaeresis (umlaut) A with tilde A with ring above AE ligature a with diaeresis (umlaut) a with grave accent a with ring above ae ligature C-cedilla c-cedilla capital Eth / D with stroke small eth / d with stroke E with diaeresis E with grave accent E with acute E with circumflex e with diaeresis e with grave accent e with acute e with circumflex I with diaeresis I with acute i with diaeresis i with acute i with circumflex N with tilde n with tilde O with diaeresis (umlaut) O with grave accent O with acute O with circumflex O with tilde O-slash / O with stroke OE ligature o with diaeresis (umlaut) o with grave accent o with acute o with tilde o-slash / o with stroke s with caron (háček) thorn U with diaeresis (umlaut) U with grave accent U with acute U with circumflex u with grave accent u with acute u with circumflex Y with diaeresis Y with acute y with acute Diacritical Marks diaeresis ("diaresis") circumflex accent tilde overline / overscore middle dot / interpoint Greek alphabet - Capital letters Alpha Beta Gamma Delta Epsilon Zeta Eta Iota Kappa Lambda Mu ("My") Nu ("Ny") capital letter Xi Omicron capital letter Pi Rho Sigma Tau Chi Psi Omega Greek alphabet - Small letters gamma delta epsilon eta theta iota lambda mu ("my") nu ("ny") small letter xi omicron small letter pi sigma tau upsilon ("ipsilon") / (variant) phi chi psi omega Math Symbol left square bracket (opening) right square bracket (closing) left curly bracket (opening) right curly bracket (closing) left angle bracket (opening) right angle bracket (closing) asymptotic to / almost equal to congruent not equal to minus sign plus-minus sign radical sign ("square root") multiplication sign / times sign POPULAR asterisk operator division sign (obelus) fraction one quarter fraction one half fraction three quarters proportional to infinity sign less than or equal to greater than greater than or equal to mathematical function f(x) integral partial differential angle perpendicular to / orthogonal to degree sign seconds direct sum tensor product dot operator / scalar product cross product not sign (negation) therefore not an element of contains as member union / cup superset of superset of or equal to subset of subset of or equal to not a subset of material conditional (implication) Rightwards Arrow Currency Symbol euro sign yen sign general currency sign Quotation Marks single quotation mark (apostrophe) double quotation mark bottom single quote right single quote, "high 9" (English: closing) bottom double quotes right double quotes, "high 99" (English: closing) left angle quotes (French: opening guillemet) right angle quotes (French: closing guillemet) Punctuation marks non-breaking hyphen soft hyphen (dis­cre­tion­ar­y hy­phen) en-dash ("UK-dash – use with spaces before and after") em-dash ("US-dash—use without spaces") inverted exclamation mark middle dot/interpunct bullet point Space characters Superscript prime / minutes / feet double prime / seconds / inches degree superscript 1 superscript 2 / squared superscript 3 / cubed feminine ordinal indicator masculine ordinal indicator Arrows upwards arrow rightwards arrow downwards arrow left right arrow leftwards double arrow upwards double arrow rightwards double arrow downwards double arrow left right double arrow Symbols, Dingbats spade suit club suit heart suit diamond suit double dagger left ceiling right floor Number Forms roman numeral one roman numeral two roman numeral three roman numeral four roman numeral five roman numeral six roman numeral seven roman numeral eight roman numeral nine roman numeral ten Letterlike Symbols rational numbers real numbers integers complex numbers alef symbol planck constant over 2pi script small l weierstrass elliptic function black letter capital r Geometric Shapes white square with rounded corners black small square black rectangle white rectangle black diamond white diamond black circle bullseye Miscellaneous Symbols POPULAR #1 check mark ballot x black star POPULAR white star white telephone ballot box with check POPULAR ballot box with x skull and crossbones warning sign high voltage recycling symbol quarter note eighth note beamed eighth notes beamed sixteenth notes music flat music natural music sharp white heavy check mark

Total 749 tools and pages. New tools added regularly. Have a suggestion? Submit feedback.