HTML Prettifier
About the HTML Prettifier
The word "prettifier" always makes me think of the difference between code that works and code that someone else can read six months from now. I've inherited codebases where the HTML looked like it was generated by a machine having a bad day — and the first thing I always do is run it through a prettifier.
HTMLify's prettifier focuses on visual clarity above all else. It adds meaningful whitespace, aligns nested structures, and produces output that looks like it was written by a careful developer who cares about their craft. The output isn't just formatted — it's genuinely pleasant to read.
Features
- Human-readable output — formatted to look like hand-written, careful code
- Nested structure clarity — deep nesting clearly expressed through indentation
- Comment retention — documentation comments preserved in output
- Zero data transmission — entirely client-side processing
- Works with fragments — doesn't require a full HTML document, works on snippets
- Copy to clipboard in one click — paste prettified code immediately
Why "Pretty" Code Actually Matters
There's a real productivity argument for pretty code beyond aesthetics. Studies of developer eye-tracking show that consistent indentation reduces the time to locate a specific element by 30–40%. When you're deep in a debugging session at 11pm, that matters. Pretty code also makes errors visually obvious — a misaligned closing tag jumps out immediately in properly indented code but disappears in flat, unindented code.
I also find that prettifying code before a code review is a courtesy to reviewers. It signals that you care about quality and makes the structural logic of the code easy to follow, which usually leads to more substantive and useful feedback.