Run the markup through an HTML beautifier, which indents nested elements consistently so the document structure becomes visible at a glance. This is the quickest way to make minified page source, CMS output or copied markup readable. A browser-based HTML formatter does it instantly on your own device, with nothing pasted to a server.
Free HTML formatter and beautifier. Indent messy or minified HTML into clean, readable markup with proper nesting so you can scan structure at a glance.
Open HTML Formatter / Beautifier → Free toolFree JavaScript formatter and beautifier. Expand minified or one-line JS into readable, indented code with proper brace and block structure.
Open JS Formatter / Beautifier →HTML is a tree, and without indentation the tree is invisible: you cannot tell which div closes where or how deeply an element is nested. A formatter parses the markup and reprints it with one consistent indent per nesting level, which turns a wall of angle brackets into a structure you can scan. That matters when you are debugging layout issues, editing a template someone else wrote, or reading the source of a page that ships minified.
The formatter runs entirely in your browser, so page source from an internal admin panel or a client project never touches a third-party server. Paste, format, copy out. If the page also embeds minified scripts, a companion JavaScript formatter expands those the same private way.
Formatting only changes whitespace and indentation, and browsers collapse most whitespace, so rendering is normally unaffected. The main exception is whitespace-sensitive content such as pre elements.
No. Formatting happens entirely in your browser.
Yes. One-line minified HTML is exactly what it is for, it rebuilds the nesting so you can see the structure.