Development
Check Markdown for style issues: heading levels, code fences, list consistency, and more (zero-dependency rule engine)
markdown-linterFormat Conversion
Generate a table of contents from Markdown headings with GitHub-style anchor links
markdown-toc-generatorMath & Numbers
Solve for two unknowns among Voltage, Current, Resistance and Power from any two given values, with visual triangles and AC power-factor support
ohms-law-calculatorFormat Conversion
Format and beautify TOML. Note: comments are lost and key order may change (@iarna/toml limitation)
toml-formatterFormat Conversion
Format, beautify and minify XML with configurable indent. Preserves comments and CDATA
xml-formatterFormat Conversion
Format and beautify YAML. Note: comments are lost (js-yaml limitation)
yaml-formatterDevelopment
Convert between natural-language durations and ISO 8601 durations (PnYnMnDTnHnMnS) in both directions with validation of edge cases
iso-8601-duration-builderValidation
Validate OpenAPI 3.0/3.1 and Swagger 2.0 documents structurally: required fields, path/operation completeness, response codes, $ref resolution, operationId uniqueness, and component integrity
openapi-validatorDevelopment
Render a regular expression as an SVG railroad (syntax) diagram showing literals, groups, alternations, and repetition, with capture-group numbering and flag explanations
regex-railroad-diagram-visualizerAI Tools
Rewrite weak resume bullets into achievement-driven STAR bullets (Situation/Task/Action/Result) with strong verbs and quantified results, plus before/after STAR scores and readability diagnostics
resume-bullet-star-rewriterDevelopment
Upload any binary file and inspect it as a classic hex dump with offset, hex bytes, and ASCII columns (read-only)
hex-editorFormat Conversion
Convert text to and from hexadecimal strings with flexible spacing, prefix (0x/\x/U+), and case options
hex-to-string