Markdown Preview explained

Live GFM preview with sanitized, XSS-safe rendering. That single sentence is most of what Markdown Preview does—the rest is knowing when to reach for it, which inputs cause trouble, and how it fits alongside the other utilities in the same category.

When Markdown Preview is the right tool

Text chores stack up quickly, and running them in the right order stops one step from undoing another.

• Draft README sections before committing to a repo.
• Preview release notes or blog posts locally.
• Check how tables and code blocks will render on GitHub.
• Verify that untrusted Markdown is stripped safely.

Getting a reliable result

Normalise whitespace before matching or deduplicating, since invisible differences defeat exact comparison. Keep the before-and-after counts so you can show what a bulk edit actually changed.

• Preview edge cases like nested lists and code fences.
• Avoid relying on raw HTML—prefer standard Markdown syntax.
• Use fenced code blocks with language tags for clarity.

Mistakes that waste time

• Expecting unsanitized HTML to render verbatim.
• Forgetting blank lines before headings or lists.
• Using tabs inside tables where pipe alignment matters.
• Assuming single newlines create paragraph breaks.

Privacy and local processing

Text is transformed in the page, so drafts, exports, and lists never leave your browser for these operations.

Related tools and reading

Open Markdown Preview to try it with your own input. Nearby utilities include Reading Time Calculator and Remove Empty Lines. For background, read Text cleanup workflows that scale, and browse the Text Toolkit collection for the rest of the cluster.