Markdown Formatter / Linter

It checks for inconsistent heading levels, missing blank lines around headings and lists, trailing whitespace, inconsistent list markers, headings without a space after #, and excessive blank lines.

The formatter applies automatic fixes (adds blank lines, normalizes list markers, trims trailing whitespace) and shows you exactly what was changed.

By default, unordered list markers are normalized to dashes (-). The formatter also preserves ordered list numbering.

It ensures heading levels only increase by one (e.g. # → ## is fine, # → ### skips a level). Skipped levels are flagged and reported.

Yes — the formatter handles standard Markdown and GFM features like task lists, fenced code blocks, and tables.