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⌘Dev Utilities

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Favicon generator

Produce a favicon set from a single source image

Choose a source image

…or drop one here. A square source of 512 px or more gives the best result; an SVG works too.

All processing is client-side. No analytics, no telemetry, no uploads.

Press ⌘K to search tools.

JSON ↔ YAMLConvert between JSON and YAML in either directionConvert
CSV ↔ JSONConvert delimited data to JSON records and backConvert
Code formatterPretty-print, minify and validate JSON, XML and SQLConvert
JSON to TypeScriptGenerate TypeScript interfaces from a JSON sampleConvert
curl to codeTurn a curl command into fetch, Python, Go or PowerShellConvert
JSON to elmer keysTurn a JSON object into elmer key set, key get or dep key commandsConvert
Query params to JSONSplit a query string into structured JSON and backConvert
Number base converterConvert between binary, octal, decimal, hex and any base to 36Convert
Timestamp converterConvert between Unix epochs, Epic DAT, DTE and Instant values, and dates in any time zoneConvert
Base64 encoderEncode and decode Base64, with UTF-8 and URL-safe handlingEncode & decode
URL encoderPercent-encode and decode URLs and query componentsEncode & decode
HTML entity encoderEscape and unescape HTML entitiesEncode & decode
Backslash escapeEscape and unescape string literals for code and configEncode & decode
JWT decoderRead a JWT's claims and verify its signature against a key you pasteInspect
Regex testerTest a regular expression against sample text with match highlightingInspect
Diff checkerCompare two blocks of text line by lineInspect
Cron parserExplain a cron expression and preview its next runsInspect
HAR file viewerInspect requests, timings and headers in a HAR captureInspect
User agent parserBreak a user agent string into browser, OS and deviceInspect
Hash generatorCompute SHA-1, SHA-256, SHA-384 and SHA-512 digestsGenerate
UUID generatorGenerate v4 and v7 UUIDs in bulkGenerate
Password generatorGenerate strong random passwords and passphrasesGenerate
JWT generatorBuild and sign a JWT with an HMAC secretGenerate
QR code generatorTurn text or a URL into a downloadable QR codeGenerate
Lorem ipsumGenerate placeholder paragraphs, sentences and wordsGenerate
Case converterConvert between camel, snake, kebab, pascal and title caseText
SlugifyTurn any text into a URL-safe slugText
Text sorterSort, reverse, shuffle and dedupe linesText
Whitespace removerStrip trailing, leading and duplicate whitespaceText
Character counterCount characters, words, lines and bytesText
Markdown previewRender Markdown to HTML side by sideText
HTML to MarkdownConvert an HTML fragment into MarkdownText
Image to Base64Turn an image into a Base64 data URIImage
Base64 to imageDecode a Base64 data URI back into a downloadable imageImage
WebP converterConvert PNG and JPEG images to WebP in the browserImage
Image resizerResize and crop images without uploading themImage
SVG optimizerStrip metadata and shrink SVG markupImage
Favicon generatorProduce a favicon set from a single source imageImage
Color converterConvert between hex, RGB, HSL and OKLCHColor
Contrast checkerCheck colour pairs against WCAG contrast thresholdsColor
Gradient generatorBuild CSS gradients and copy the declarationColor
What is my IPYour public IP, IPv4 or IPv6, and the edge that served youNetwork
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