All Tools
JSON FormatterFormat, validate, minify, and inspect JSON with instant feedback
JSON to YAMLConvert JSON into YAML with readable structure and browser-only processing
JSON to TypeScriptGenerate TypeScript interfaces from JSON with browser-only processing
JSON DiffCompare two JSON documents, inspect changed paths, and export a readable diff
JSONPath QueryRun JSONPath queries against JSON and inspect matched values or paths
JSON Schema ValidatorValidate JSON against a JSON Schema and inspect validation errors
Base64 ConverterEncode plain text into Base64 or decode Base64 back into UTF-8 text
URL Encode/DecodeEncode or decode URL text, query components, and full URLs
JWT DecodeDecode JWT header and payload locally, inspect claims, and keep the token
HTML EntitiesEncode or decode HTML entities locally and inspect safe text transformations instantly
Hex to ASCIIConvert plain text into hex or decode hex back into readable UTF-8 text
Unicode LookupInspect characters, code points, escapes, and byte representations from input text
Hash GeneratorHash input text instantly with browser-native algorithms and export the digest in hex or Base64
HMAC GeneratorGenerate keyed HMAC signatures locally with common digest algorithms and export the result instantly
HMAC VerifyVerify an expected HMAC signature against local input, secret, algorithm, and output format
UUID GeneratorGenerate UUID v4 or v7 locally, in single or batch output, with no server round trip
Password GeneratorGenerate strong passwords locally with configurable length, sets, and batch output
AES Encrypt / DecryptEncrypt or decrypt text locally with AES-GCM and a passphrase-derived key
RSA Key Pair GeneratorGenerate RSA key pairs locally and export public and private PEM blocks
RSA Encrypt / DecryptEncrypt short text with a public RSA key or decrypt Base64 ciphertext with the matching private key
Keypair / PEM ViewerInspect PEM blocks locally, including type, headers, and decoded body size
PGP Inspect / Armor DecodeInspect ASCII-armored PGP blocks locally and decode armor metadata and body size
Unix TimestampConvert local date and time into Unix seconds or milliseconds, or paste a timestamp to reverse it
Timezone ConverterCompare one date and time across common engineering time zones without leaving the browser
Cron BuilderBuild a five-field cron expression quickly and export the result with a readable explanation
ISO 8601 BuilderConstruct ISO 8601 strings with UTC, local offset, or date-only output in one fast browser tool
Date DifferenceCalculate the exact time span between two local datetimes and export the result instantly
Case ConverterConvert text into lower, upper, camel, Pascal, snake, kebab, title, sentence, and more
Sort & DedupeSort lines, remove duplicates, trim whitespace, and clean text lists instantly
Find & ReplaceFind text or regex matches and replace them instantly with live output and match counts
Markdown PreviewPreview markdown live with a rendered output pane and browser-only processing
Lorem IpsumGenerate placeholder paragraphs, sentences, or lines instantly with browser-only controls
Contrast CheckerCheck WCAG contrast ratios for foreground and background colors with live preview
HEX / RGB / HSLConvert HEX, RGB, and HSL values instantly with a live color preview and CSS-ready output
Palette GeneratorGenerate tints, shades, and harmony palettes from one base color with CSS-ready output
Gradient BuilderBuild linear or radial gradients with editable stops, live preview, and CSS-ready output
Tailwind Color ReferenceBrowse Tailwind CSS color families with both v3 legacy hex values and the current v4 palette
Image CompressorCompress images locally, choose JPEG or WebP output, target a file size, and download the result
Image ResizeResize images locally with exact dimensions, aspect lock, presets, and browser-only export
Convert FormatConvert images locally between JPEG, PNG, and WebP with instant preview and browser-only export
SVG OptimizerOptimize SVG markup locally by removing comments, metadata, and editor-only attributes before export
Favicon GeneratorGenerate common favicon and app icon PNG sizes locally from one source image with browser-only export
HTTP Status CodesLook up HTTP status codes quickly with categories, explanations, and common API usage guidance
MIME LookupLook up MIME types, file extensions, and common usage notes for uploads, downloads, and HTTP responses
URL ParserParse a URL into protocol, host, credentials, pathname, query params, and fragment details
CIDR CalculatorCalculate subnet masks, network ranges, broadcast addresses, and usable hosts from an IPv4 CIDR block
User Agent ParserParse a user agent string into browser, engine, operating system, device, and bot details
SQL FormatterFormat SQL queries locally with readable indentation, keyword casing, and quick export actions
Code FormatterFormat JavaScript, TypeScript, JSON, HTML, CSS, Markdown, and YAML locally with parser-aware output
Diff ViewerCompare two text or code inputs locally with line-level differences, side-by-side review, and diff export
Escape StringsEscape or unescape developer string literals locally for JavaScript, JSON, and regex-safe text
Snippet GeneratorGenerate practical developer snippets locally from reusable templates and editable fields
Regex TesterTest regular expressions live, inspect matches, and jump straight to matched text
Regex ExplainerBreak down a regular expression into readable pieces and understand what each token does
Regex BuilderBuild common regex patterns from structured inputs and test them against sample text
Pattern LibraryBrowse reusable regex patterns, inspect examples, and copy practical snippets quickly
CheatsheetLook up regex anchors, classes, quantifiers, groups, and flags in one fast reference