Dart Code Formatter Paste your Dart or Flutter source and instantly get a cleanly formatted version that follows the conventions enforced by dart format. The formatter runs entirely in your browser — no SDK install, no upload, and no waiting on a remote server. It is a fast, deterministic helper for every situation where you ...
Try the Tool »MIME Type Interactive Lookup Look up the correct MIME type for any file extension — or find the file extensions associated with a MIME type. Built on the IANA media type registry, this interactive lookup gives you instant, accurate results with category labels and one-click copying so you can drop the right Content-Type into your ...
Try the Tool »Swift Code Formatter Paste your Swift source code and reformat it instantly using swift-format-style rules. The tool normalizes indentation, brace placement, operator spacing, return-type arrows, optional handling, and trailing commas — entirely in your browser, with no upload. Built for iOS, macOS, watchOS, and tvOS developers who need a deterministic, rule-based formatter for code reviews, ...
Try the Tool »Ruby Code Formatter Paste your Ruby code and instantly reformat it to follow standard Ruby style: 2-space indentation, consistent operator spacing, trimmed trailing whitespace, and tidy block structure. The formatter runs entirely in your browser, so your code never leaves your machine. How to Use Paste your Ruby source into the input area, or click ...
Try the Tool »Kotlin Code Formatter Paste any Kotlin source and get a clean, ktlint-style reformat in your browser. The formatter normalizes indentation, fixes operator spacing, sorts imports, and adds trailing commas in multi-line lists, all without sending code to a server. How to Use Paste your Kotlin code into the input box, or click Try an example ...
Try the Tool »Code Screenshot Generator Turn any snippet of code into a beautiful, shareable PNG image. Pick a syntax theme, choose a gradient background, add macOS or Windows window chrome, and download a polished screenshot ready for Twitter, LinkedIn, blog posts, slide decks, or documentation. Everything runs locally in your browser, so your code never leaves your ...
Try the Tool »Character Frequency Analyzer Paste any text and instantly see how often every character appears. The Character Frequency Analyzer counts every letter, digit, or symbol, ranks them, shows percentages, and renders a visual bar chart so you can spot patterns at a glance. It is a go-to companion for cryptanalysis, linguistics homework, password audits, content audits, ...
Try the Tool »LaTeX Equation Renderer Type or paste any LaTeX math expression and instantly see it rendered as a clean, publication-quality equation in your browser. Whether you are writing a research paper, building course material, or sharing math on social media, the LaTeX Equation Renderer turns dense source markup into a beautifully typeset formula you can copy ...
Try the Tool »Mermaid Diagram Renderer Paste mermaid.js syntax and instantly see a live, interactive diagram you can copy or download. Supports flowcharts, sequence diagrams, Gantt charts, pie charts, class diagrams, and more — all rendered client-side in your browser, with no servers, accounts, or installs required. Mermaid is great for “diagrams as code”: your diagram lives next ...
Try the Tool »Makefile Formatter Paste a Makefile and the formatter normalizes it to GNU make’s strict tab-indented recipe rules. Recipe lines that use spaces instead of tabs (the most common cause of “missing separator” errors and a frequent issue with AI-generated Makefiles) are repaired automatically. Trailing whitespace, runaway blank lines, and inconsistent assignment spacing are cleaned up ...
Try the Tool »Java Properties File Formatter This tool formats Java .properties files using the same rules the JDK uses to load them. It accepts =, :, or whitespace as a separator, recognises both # and ! comment styles, and joins backslash continuation lines into clean single-line key/value pairs. Use it on application.properties, logback.properties, ResourceBundle messages_*.properties, or any ...
Try the Tool »NDJSON Formatter & Validator Paste a Newline-Delimited JSON (NDJSON / JSON Lines) document and check every record at once. Each line is parsed independently, so a single broken record does not hide the rest. The tool reports valid and invalid line counts, the most common top-level keys, and the exact parse error for any line ...
Try the Tool »SVG to React JSX Component Converter Paste raw SVG markup and get a clean React functional component back. The tool applies deterministic camelCase conversion for every attribute, drops non-JSX syntax, and wraps the output in a ready-to-import component — optionally typed, optionally forwardRef-wrapped, and optionally resized via props. Everything runs locally in your browser, so ...
Try the Tool »CSV to XML Converter Turn any CSV file into clean, well-formed XML without leaving the browser. Paste or upload your data, pick how rows and headers should map, and get back properly escaped XML with the entity edge cases (ampersands, angle brackets, quotes, embedded newlines) handled automatically. Everything runs client-side, so your CSV never leaves ...
Try the Tool »Git Unified Diff & Patch Generator Paste an original snippet and a modified snippet to instantly generate a valid unified diff in .patch format. The output uses correct hunk headers (@@ -L,N +L,N @@) so the patch applies cleanly with git apply or the standard patch utility — no hand-fixing required. How to Use Paste ...
Try the Tool ».editorconfig Generator Build a valid, spec-compliant .editorconfig file for your project without memorising property names or cross-checking values. Pick a preset for your language, tweak the global defaults, toggle a few per-language overrides, and copy the result straight into the root of your repository. EditorConfig files keep indent styles, line endings, character sets, and trailing-whitespace ...
Try the Tool »Morse Code Audio Player Type any text and listen to it played as real Morse code in your browser. Adjust the speed and tone to match practice exam standards or vintage CW radio gear, then download the result as a WAV file you can use offline. How to Use Type or paste any letters, numbers, ...
Try the Tool »LLM Token Count Estimator Paste any prompt, document, or snippet of code and instantly see an estimated token count for GPT-4o, GPT-4 Turbo, GPT-3.5, the o1 reasoning models, Claude 3.x, and Gemini 1.5. The tool runs fully in the browser, updates in real time as you type, and pairs the count with cost figures per ...
Try the Tool »Semver Version Calculator & Range Tester An all-in-one Semantic Versioning (SemVer 2.0.0) workbench for developers. Validate version strings, compare two versions with strict precedence, test whether a version satisfies an npm/Composer-style range expression (^, ~, x, hyphen, ||, comparison operators), bump a version with major/minor/patch/prerelease increments, and sort large lists of versions with full pre-release ...
Try the Tool »XPath Expression Tester & Evaluator Paste XML or HTML, type an XPath 1.0 expression, and instantly see which nodes match. The tester runs entirely in your browser, highlights matched fragments in the source, and shows a readable summary for node sets, strings, numbers, and booleans. How to Use Paste your XML or HTML document into ...
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Scoreboard is a fun way to keep track of your games, all data is stored in your browser. More features are coming soon!
Update: Our latest tool was added on Jun 17, 2026
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