All Tools
Free online developer tools — no signup required.
Diff Tools
⇄Text DiffCompare any plain text, code, or config files side by side.{}JSON DiffCompare JSON objects and highlight every change.≡YAML DiffDiff YAML config files for Kubernetes, Docker, and CI/CD.⊞CSV DiffCompare CSV files with line diff and table view.</>XML DiffCompare XML files with optional pretty-print normalization.{}Code DiffSide-by-side code comparison for any programming language.MDMarkdown DiffCompare Markdown documents and highlight every addition and removal.</>HTML DiffCompare HTML files or snippets with optional whitespace normalization.SQLSQL DiffCompare SQL schemas, migrations, or queries side by side.⚙TOML / INI DiffCompare TOML and INI configuration files and highlight changes.⇄Text Diff InlineCompare two texts with inline character-level or word-level diff highlighting.
Formatters & Encoders
Text Tools
¶Word CounterCount words, characters, sentences, paragraphs, and lines.AaCase ConverterConvert to camelCase, snake_case, PascalCase, kebab-case and more.↻Text RepeaterRepeat any text a specified number of times with a custom separator.⇔Palindrome CheckerCheck if a word or phrase reads the same forwards and backwards.
Generators & Utilities
#UUID GeneratorGenerate UUID v4 identifiers using the browser crypto API.⏱Timestamp ConverterConvert Unix timestamps to readable dates and timezones.#Hash GeneratorCompute MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes.🔑JWT DecoderDecode JWT tokens and inspect header, payload, and expiry..*Regex TesterTest regular expressions in real time with match highlighting.⇄JSON ↔ YAML ConverterConvert JSON to YAML or YAML to JSON instantly.0xNumber Base ConverterConvert between binary, octal, decimal, and hexadecimal.≡YAML FormatterBeautify and validate YAML files with consistent indentation.🎨Color ConverterConvert colors between HEX, RGB, and HSL formats.⏰Cron ParserExplain cron expressions and preview next scheduled run times.⇄CSV ↔ JSON ConverterConvert CSV files to JSON arrays or JSON arrays back to CSV.</>HTML FormatterBeautify or minify HTML with proper indentation.</>XML FormatterBeautify or minify XML with proper indentation.SQLSQL FormatterBeautify SQL queries with clause breaks and uppercase keywords, or minify to one line.#.CSS FormatterBeautify or minify CSS stylesheets with proper indentation.JSJavaScript FormatterBeautify or minify JavaScript code with proper indentation.TSTypeScript FormatterBeautify or minify TypeScript code with proper indentation.ScSCSS / Less FormatterBeautify or minify SCSS and Less stylesheets with proper indentation.INIINI FormatterBeautify or minify INI configuration files with consistent spacing.GQLGraphQL FormatterBeautify or minify GraphQL queries, mutations, and schema definitions.PBProtobuf FormatterBeautify or minify Protocol Buffer (.proto) files with proper indentation.NxNginx Config FormatterBeautify or minify Nginx configuration files with proper indentation.🐳Docker Compose FormatterBeautify or minify Docker Compose YAML files with proper indentation.<HTML Escape / UnescapeEscape special characters to HTML entities or unescape them back.\nString Escape / UnescapeEscape special characters to string escape sequences, or unescape them back.\nJSON Escape / UnescapeEscape text for use in JSON strings or unescape JSON-encoded strings.$.JSONPath TesterWrite JSONPath expressions and instantly query JSON data.4○4HTTP Status CodesComplete HTTP status codes reference with descriptions and RFC specs.KBByte ConverterConvert between bytes, KB, MB, GB, TB and binary units KiB, MiB, GiB.LiLorem Ipsum GeneratorGenerate placeholder paragraphs, sentences, or words instantly.✓JSON Schema ValidatorValidate JSON data against a JSON Schema and see detailed errors.MDMarkdown PreviewWrite Markdown and see the rendered HTML preview in real time.🖼Image to Base64Upload an image and instantly get the Base64 encoded string or data URL.🔐Password GeneratorGenerate strong, random passwords with custom length and character sets.🔑JWT GeneratorCreate signed HS256 JWT tokens from a custom payload and secret key.▦QR Code GeneratorCreate QR codes from any text or URL instantly. Download as PNG.🔗URL ParserBreak any URL into protocol, hostname, path, query parameters, and fragment.TSJSON to TypeScriptPaste JSON and instantly generate TypeScript interfaces or type definitions.⇄File DiffUpload two text files or paste content to compare them side by side.≈Diff StatsAnalyze differences with line, word, and character statistics plus similarity score.{}JSON MinifierCompress and minify JSON by removing whitespace. Shows percentage of space saved.A↓Text SorterSort lines alphabetically, by length, or naturally. Remove duplicates and filter blank lines.⎵Whitespace CleanerTrim lines, collapse extra spaces, remove blank lines, and normalize line endings.MDMarkdown to HTMLConvert Markdown to HTML instantly. Preview rendered output side by side.CSVJSON to CSVConvert JSON arrays to CSV. Supports comma, semicolon, tab, and pipe delimiters.</>HTML to MarkdownConvert HTML to Markdown. Supports headings, lists, code blocks, links, and images.🌐IP LookupLook up geolocation, ISP, and timezone for any IPv4 or IPv6 address.pxCSS Unit ConverterConvert between px, rem, em, vw, vh, pt, and % CSS units instantly.{}JSON FlattenerFlatten nested JSON to dot-notation keys or unflatten back to nested objects.755chmod CalculatorCalculate Unix file permissions visually. Get octal, symbolic notation, and chmod command.SVGSVG OptimizerCompress and optimize SVG files by removing comments, metadata, and redundant data.</>HTML MinifierMinify HTML by removing comments, collapsing whitespace, and stripping empty attributes.⇄TOML ↔ JSON ConverterConvert TOML configuration files to JSON and JSON back to TOML.⇄XML ↔ JSON ConverterConvert XML documents to JSON and JSON back to XML.🔍JWT InspectorDecode and inspect JWT tokens with expiry detection and timestamp formatting.A█ASCII Art GeneratorConvert text to ASCII art with multiple font styles.±Line Diff CounterCompare two texts and count added, removed, and unchanged lines.T…Text TruncatorTruncate text by character count, word count, or byte size with a custom ellipsis.ULULID GeneratorGenerate ULID (Universally Unique Lexicographically Sortable Identifier) values with embedded timestamps.IDNano ID GeneratorGenerate Nano ID — compact, URL-safe unique identifiers with custom alphabet and length.OTPTOTP GeneratorGenerate TOTP secrets and time-based one-time passwords for 2FA authentication.DNSDNS LookupLook up DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA) for any domain.🔒SSL Certificate CheckerCheck SSL/TLS certificate expiry, issuer, and SANs for any domain.HDRHTTP Header InspectorInspect HTTP response headers for any URL.v2Semver ComparatorCompare semantic version strings and determine precedence.⇄YAML ↔ TOML ConverterConvert YAML to TOML and TOML back to YAML.⇄CSV ↔ XML ConverterConvert CSV data to XML and XML back to CSV.⇄INI ↔ JSON ConverterConvert INI configuration files to JSON and JSON back to INI.⇄CSV ↔ YAML ConverterConvert CSV data to YAML and YAML lists back to CSV.🔑JWT Expiry CheckerCheck JWT token expiry status, time remaining, and inspect standard claims.🎨Color Palette GeneratorGenerate color palettes using harmony modes: monochromatic, complementary, triadic, and more.⊟Diff Patch GeneratorGenerate and apply unified diff patches compatible with git apply and POSIX patch.32Base32 Encode/DecodeEncode text to Base32 (RFC 4648) or decode Base32 strings back to plain text.🔒Bcrypt Hash GeneratorGenerate bcrypt password hashes and verify plaintext against bcrypt hashes..env.env File ParserParse .env files into a searchable key-value table, detect duplicate keys, and mask secrets.—Duplicate Line RemoverRemove duplicate lines from any text. Supports case-insensitive matching, trim whitespace, and sort output.⇌Unit ConverterConvert between units of length, weight, temperature, area, volume, speed, and data storage.▦CSS Gradient GeneratorGenerate CSS linear, radial, and conic gradients with a visual editor. Add color stops and copy CSS instantly.🔐AES Encrypt & DecryptEncrypt or decrypt text with AES-128/192/256-GCM in your browser. No data leaves your device.◫CSS Box Shadow GeneratorGenerate CSS box-shadow with live preview. Add multiple layers, adjust offset, blur, spread, color, and opacity.◑Contrast Ratio CheckerCheck color contrast ratios against WCAG 2.1 AA and AAA standards for text accessibility.🐳Docker Run to ComposeConvert docker run commands to docker-compose.yml. Supports ports, volumes, env vars, networks, and 30+ flags.ZodJSON to Zod SchemaConvert JSON to a Zod schema with TypeScript type inference. Handles nested objects, arrays, and null values.GoJSON to Go StructConvert JSON to Go structs with json struct tags. Handles nested objects, arrays, and all Go types.PyJSON to Python DataclassConvert JSON to Python dataclasses or Pydantic BaseModel classes with type hints..gigitignore GeneratorGenerate .gitignore files for your project. Select languages, frameworks, tools, and IDEs.MDCSV to Markdown TableConvert CSV data to Markdown tables and Markdown tables back to CSV instantly.🔑Password Strength CheckerCheck password strength with entropy analysis and common password detection.⊞CSS Flexbox GeneratorVisually build CSS Flexbox layouts with a live preview and copy the generated CSS.MACHMAC GeneratorGenerate HMAC-SHA256, SHA-512 signatures. Output in hex or base64.🤖robots.txt GeneratorGenerate robots.txt files with custom User-agent rules, Disallow paths, and Sitemap URLs.📖Reading Time EstimatorEstimate reading time for any text. Shows word count, character count, and paragraph count.⊟CSS Grid GeneratorVisually configure CSS Grid layout properties and copy the generated CSS.⏱Crontab ValidatorValidate cron expressions and preview the next 8 scheduled execution times.HTTPHTTP Request BuilderBuild HTTP requests and export as curl, fetch, or axios code.JMPJSON Merge PatchApply or generate RFC 7396 JSON Merge Patches. Merge JSON objects or compute diff patches.AaText Case ConverterConvert text between camelCase, PascalCase, snake_case, SCREAMING_SNAKE, kebab-case, and 8 more conventions.JavaJSON to Java ClassConvert JSON to Java POJO classes with getters/setters or Lombok @Data annotations.MDMarkdown Table GeneratorCreate Markdown tables visually. Add rows, columns, set alignment, and copy the output.IPIP CIDR CalculatorCalculate subnet mask, network address, broadcast address, and usable host count from any IPv4 CIDR notation.CSSCSS Specificity CalculatorCalculate and compare CSS selector specificity. Shows the (IDs, Classes, Elements) score for any selector.SlugSlugify ToolConvert text to a URL-friendly slug. Choose separator, toggle lowercase, handles accented characters automatically.RsJSON to Rust StructConvert JSON to Rust structs with serde Serialize/Deserialize derives. Handles nested objects, arrays, and all Rust primitive types.🎨Hex Color Shades GeneratorGenerate tints and shades from any hex color. Choose 5 to 20 steps and copy values individually or all at once.···Morse Code ConverterConvert text to Morse code or decode Morse code back to plain text. Supports letters, digits, and punctuation.ROTROT13 / Caesar CipherEncode and decode text with ROT13 or any Caesar cipher shift 1–25. View all 25 possible decryptions at once.U+Unicode InspectorInspect every character: Unicode code point, UTF-8 bytes, UTF-16 encoding, escape sequence, and Unicode block.01Text to Binary / Octal / HexConvert text to binary, octal, or hexadecimal byte encoding and back. Supports full Unicode via UTF-8.METAMeta Tags GeneratorGenerate SEO meta tags, Open Graph tags, and Twitter Card tags. Fill in the form and copy the HTML output.#File Hash GeneratorCompute MD5, SHA-1, SHA-256, and SHA-512 checksums for any file in your browser.PEMPEM Certificate DecoderParse X.509 PEM certificates and view subject, issuer, SANs, and validity dates.TStsconfig.json GeneratorBuild a tsconfig.json with framework presets for React, Next.js, Node.js, and more.✨.prettierrc GeneratorGenerate a .prettierrc with Airbnb, Google, Standard JS presets and custom toggles.📅Date CalculatorCalculate date differences, add/subtract days, and count business days.🌍Time Zone ConverterConvert a time across multiple world time zones simultaneously.JPJSON Patch & JSON PointerApply RFC 6902 JSON Patch operations or resolve RFC 6901 JSON Pointer expressions.R/Regex Replace ToolTest regex patterns with real-time highlighting and apply find-and-replace with capture group references.SVGSVG to CSS BackgroundConvert SVG to a CSS background-image data URI. Outputs inline SVG and base64 variants.1KNumber Format ConverterFormat numbers as thousands-separated, scientific notation, currency, compact (K/M/B/T), and more.C#JSON to C# ClassConvert JSON to C# POCO classes or record types with JsonPropertyName attributes for System.Text.Json.&HTML Entity EncoderEncode HTML special characters to named, decimal, or hex entities. Decode entities back to text. Includes 60+ entity reference.MD✓Markdown LinterDetect Markdown formatting issues: trailing spaces, heading hierarchy, duplicate headings, bare URLs, and more.