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HTML guides
Short, practical answers to the questions people actually ask about HTML — each one paired with a free tool so you can try it straight away.
GuideHow to open an HTML file on any deviceWindows, Mac, Android, iPhone and online — step by step.GuideHow to run HTML code onlineTest HTML, CSS and JS instantly in your browser.GuideWhat is HTML?What HTML means, how tags work, and your first page.GuideHTML cheat sheetEvery common tag on one page, with examples.GuideHTML5 boilerplate templateA minimal, modern HTML5 starter template, explained.GuideHow to convert Word to clean HTMLThree ways to turn Word or Google Docs into tidy HTML.GuideThe best free online HTML editors in 2026Seven free editors compared on features and privacy.GuideHTML Online vs html-online.comSide-by-side comparison with the classic HTML editor.