I built HTML Formatter (https://htmlformatters.com) — a free, browser-based tool for formatting, beautifying, and validating HTML. The core idea is simple: paste messy, minified, or poorly indented HTML and get clean, consistently indented output back in one click. Everything runs entirely in the browser — no server, no login, no data leaving your machine. What it does: - Formats and beautifies HTML with consistent 2-space indentation - Validates structure before formatting (catches unclosed tags, broken nesting, etc.) - Supports file upload (.html / .htm) - Output can be copied, downloaded, or opened live in a new tab Why I built it: most existing HTML formatters are either bloated, behind a login wall, or send your code to a server. I wanted something fast, private, and straightforward. Would love any feedback — especially on edge cases where the formatter handles unusual markup or large files. Happy to answer questions.

HTML Formatter

Free browser-based HTML beautifier, formatter & validator

Free browser-based HTML beautifier, formatter & validator