LaboratorU
Structure checks
Inspect HTML, XML, Markdown, CSV, diff, and regex structure locally before publishing or sharing.
JSON DiffCompare two JSON documents by parsed path locally, ignoring whitespace and key order.JSON SchemaValidate JSON against a small local JSON Schema subset for quick contract checks.HTML StructureCheck pasted HTML for headings, links, images, forms, and basic document structure locally.XMLFormat and validate XML locally in your browser.Markdown OutlineExtract heading structure, links, images, and list counts from Markdown locally.CSV StructureCheck CSV rows, columns, headers, and inconsistent row lengths locally.robots.txtInspect pasted robots.txt directives and common crawl-blocking signals locally.Sitemap URLsExtract URLs, lastmod values, and sitemap index references from pasted sitemap XML locally.ICS InspectInspect pasted ICS calendar text for event fields and basic structural warnings.vCard InspectInspect pasted vCard text for contact fields and basic structural warnings.Text DiffCompare two text blocks line by line locally in your browser.RegexTest JavaScript regular expressions against sample text locally.