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Format and pretty print any HTML document instantly. Convert messy or minified HTML into clean, consistently indented code — all running in your browser.
HTML formatting adds consistent indentation and line breaks to raw or minified HTML, making the markup easier to read, review, and maintain. Whether you're working with server-rendered HTML, email templates, static HTML pages, or HTML snippets from a CMS, a formatter saves time by instantly producing clean, readable output.
JSON Viewer Pro's HTML formatter parses your HTML using the browser's native DOMParser and re-serialises it with configurable indentation. Block elements like div, section, article, and table are indented to show nesting. Inline elements like span, a, em, and strong stay on one line with their content. The formatter correctly handles void elements (br, input, img) that must not have closing tags.
All HTML formatting runs entirely in your browser — no data is uploaded to any server. This makes it safe to format HTML containing sensitive content, authentication tokens in forms, or other private markup.
HTML formatting adds consistent indentation and line breaks to make markup easy to read and understand.
Yes. All formatting runs locally in your browser. Your HTML is never uploaded to any server.
Yes. The formatter uses the browser's native HTML5 parser which supports all current HTML5 elements.
JSON Viewer Pro — all processing runs locally in your browser. Your data is never sent to any server. Free to use, no account required.Privacy Policy·Contact