Tools
Small browser tools that do one job well. Search, press Enter, get to work.
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19 of 19 tools
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Developer
11Curl Editor + PreviewPaste a curl command and inspect its request line, query, headers, and normalized body in a readable layout.Open toolCyberChefOpen the web app for decoding, encoding, hashing, parsing, and data transforms.Opens in a new tabHTML Live PlaygroundPaste HTML, tap play, and preview the result live in a mobile-first workspace.Open toolJSON ViewerExplore JSON as a collapsible tree, raw text, or interactive graph.Open toolJWT DebuggerDecode, verify, and generate JSON Web Tokens in your browser without sending tokens or keys to a server.Open toolMarkdown PreviewSplit editor with live preview to write and read Markdown in real time.Open toolMermaid LiveWrite Mermaid and instantly preview the rendered diagram, with live flowchart output.Open toolOpenAPI Documentation ViewerImport or paste an OpenAPI or Swagger specification and browse it as Scalar documentation directly in your browser.Open toolProxyman Raw ViewerDrop a Proxyman Raw export folder and inspect HTTP requests and responses in a readable view.Open toolSmart DiffCompare JSON, curl, and plain text with auto-detection, normalization, and split or inline views.Open toolTimestamp ConverterConvert Unix timestamps to readable dates and back in seconds or milliseconds.Open tool
Design & media
3Border Radius CalculatorCompute the inner radius from outer radius and padding, with live preview.Open toolColor Format ConverterConvert HEX, RGB, HSL and Swift UIColor in real time with color preview.Open toolImage Resizer & ConverterResize, compress, and convert PNG, JPEG, and WebP images directly in the browser.Open tool
Everyday
5Heat Index CalculatorCalculate the apparent temperature from air temperature and relative humidity.Open toolInstagram Follower CheckerUpload the official Instagram export ZIP and find who you follow that does not follow you back.Open toolInstagram Profile Picture DownloaderDownload the profile picture Instagram exposes, including private accounts when their avatar is visible.Open toolQR Code GeneratorGenerate QR codes from text or URLs in real time, choose size, and download PNG.Open toolUTM GeneratorAdd UTM parameters to a link and instantly copy the campaign-ready URL.Open tool