MDX Formatter: Format MDX with Prettier Online Free
MDX Formatter uses Prettier to make MDX (Markdown + JSX) easier to read and review. Paste or drop in MDX, choose indentation, print width, and prose wrap, then copy the formatted result. Consistent formatting can reduce whitespace noise in code reviews and make machine-generated documents clearer to inspect. Use it to check whether input parses and locate a problem line.
MDX Formatter is an online MDX formatter that uses Prettier to format MDX, the document format that combines Markdown with JSX. It gives developers a straightforward way to make MDX files more consistent and readable before reviewing, sharing, or committing them.
To use it, paste or drop in MDX, choose the indentation, print width, and prose wrap settings, and copy the formatted output. These options let you control how the formatted document is laid out. The tool can also help you confirm that input parses and identify the exact line where it does not.
Markdown is designed for readable text and lightweight markup, while JSX lets MDX documents include JSX syntax. MDX is useful when a document needs both prose and JSX; formatting can make that mixed content easier to scan. Consistent formatting can also make code review diffs less distracting by reducing whitespace inconsistencies.
MDX Formatter runs entirely in your browser: your input is processed on your device and is not sent to a server. It is free, requires no signup, and works offline once the page has loaded. It can help developers and DevOps engineers format generated MDX, review a document written by someone else, or clean up a snippet before sharing it in a bug report or code review.
Step 1: Paste or drop your MDX into the tool. It accepts MDX input, which combines Markdown and JSX.
Step 2: Choose the indentation you want for the formatted output. Consistent indentation can make documents easier to review.
Step 3: Set the print width and prose wrap options. These settings control how Prettier lays out the formatted MDX.
Step 4: Review the formatted result and copy it. You can use the output in your project, a code review, or a bug report.
Use case: Make an unreadable, machine-generated MDX file easier to review before committing it.
Use case: Format an MDX document written by someone else so you can check it against the conventions your project follows.
Use case: Produce consistently indented MDX so a code review diff is less distracted by whitespace changes.
Use case: Clean up an MDX snippet before pasting it into a bug report or code review.
Use case: Check whether MDX input parses and locate the exact line where it does not.
Use case: Format a document that mixes prose and JSX so both kinds of content are easier to scan.