HTML Beautifier

Minified HTML — collapsed onto one or a handful of long lines by a build tool — is optimised entirely for transfer size, not for a person to read, which becomes a real obstacle the moment you need to inspect a competitor's page structure, debug a production issue by viewing source, or understand how a third-party embed is actually built. Beautifying it restores the nesting a human reader needs to follow: each element on its own line, indented to reflect how deeply it sits inside its parents, which is the representation a person actually reasons about rather than the single dense line a build tool optimised for machines to transfer.

Inspecting a page built by someone else — a competitor's landing page, an embed widget's markup, an old project with no accessible source — is one of the most common reasons to reach for a beautifier specifically: browser developer tools show the live rendered DOM, which is useful for one purpose, while beautifying the raw HTML source shows the actual document structure the server sent, indentation restored, which is a different and often more useful view when trying to understand how a page was actually built rather than how it ended up rendering.