What does HTML Formatter do that other Developer pages on this site do not?

Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken. Short version: Indent HTML tags.

Does HTML Formatter upload my file or text to Tool-You servers?

No. HTML Formatter runs in this browser tab. Files stay on the device. Limit note: Tag indent only. Does not parse a full HTML5 tree.

Should I use HTML to Markdown instead of HTML Formatter?

Use HTML Formatter when you need Indent HTML tags. Use HTML to Markdown when you need Convert HTML tags to Markdown. They share a category (Developer) but not the same job.

What are the limits of HTML Formatter?

Tag indent only. Does not parse a full HTML5 tree. Also: Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken.

HTML Formatter

Indent HTML tags.

Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken.

What HTML Formatter does

Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken.

Practical limit for HTML Formatter: Tag indent only. Does not parse a full HTML5 tree. That is why output can differ from heavy desktop Developer software. Read the tool-specific note again: Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken.

How to use HTML Formatter

Keep this tab on HTML Formatter (/developer/html-formatter). Pasting into the wrong Developer tool (for example HTML to Markdown) changes the job.
Paste or type the input HTML Formatter expects. Path hint: developer · html formatter. Indent HTML tags.
Apply the HTML Formatter action only. XML Formatter is a different transform (Pretty-print XML.). Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken.
Copy the output of HTML Formatter if you need it elsewhere. Size/complexity still follows: Tag indent only. Does not parse a full HTML5 tree.
If the text job is actually Convert HTML tags to Markdown., leave HTML Formatter and open HTML to Markdown.

When not to use HTML Formatter

Skip HTML Formatter when a neighbor tool matches better — start with HTML to Markdown or XML Formatter — or when the description already warns the job will fail. In the tool’s own words: Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken.

Questions about HTML Formatter

What does HTML Formatter do that other Developer pages on this site do not?: Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken. Short version: Indent HTML tags.
Does HTML Formatter upload my file or text to Tool-You servers?: No. HTML Formatter runs in this browser tab. Files stay on the device. Limit note: Tag indent only. Does not parse a full HTML5 tree.
Should I use HTML to Markdown instead of HTML Formatter?: Use HTML Formatter when you need Indent HTML tags. Use HTML to Markdown when you need Convert HTML tags to Markdown. They share a category (Developer) but not the same job.
What are the limits of HTML Formatter?: Tag indent only. Does not parse a full HTML5 tree. Also: Indents HTML by tag depth. Not a full HTML5 parser; broken markup stays broken.