Regex-powered find & replace for Markdown. Preview matches before replacing. Skips code blocks.
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Free Markdown Find & Replace searches your Markdown document for a literal string or regex pattern, previews every match with line and column numbers, and replaces them all in one pass. Code blocks are skipped by default so your examples stay intact.
Privacy: This tool runs entirely in your browser. Your text is never uploaded, logged, or cached. Close the tab and it's gone. Verify in DevTools → Network: zero requests fire.
Renaming a function across 40 mentions in a doc shouldn't require a paid editor. The tool runs 100% in your browser.
| Input | Output | Typical size | Speed | Login needed |
|---|---|---|---|---|
| Markdown (.md) | Markdown with replacements | Up to 5 MB | < 50 ms | No |
Here's what this free tool does in detail — every feature is built to solve real problems, runs entirely in your browser, and is free forever.
Toggle Regex to use full JavaScript regular expression syntax, including capture groups ($1, $2) in the replacement. Literal mode escapes special characters automatically, so searching for user.name won't accidentally match username.
For structural edits like shifting heading levels, see the Free Markdown Heading Shifter.
Every match is listed with its line number, column, and surrounding context. The matched text is highlighted so you can verify before applying. Enable Preview only to audit matches without modifying the document.
For a broader document audit, pair with the Free Markdown Linter.
By default, content inside fenced code blocks (``` or ~~~) is never searched or replaced. This means renaming a function in your prose won't break the code examples that reference the old name. Toggle Skip code blocks off if you do want to replace inside fences.
For extracting specific sections instead of replacing, try the Free Markdown Section Extractor.
Whole word wraps the pattern in word boundaries so user won't match inside getUserById. Case insensitive ignores letter case. Combine both for safe, targeted replacements across large documents.
After replacing, add numbering to your headings with the Free Markdown Auto-Number Headings tool.
Drop any Markdown document into the input. Click Load example for a typical rename scenario.
Type the text to find and the replacement. Toggle regex, case-insensitive, whole-word, or preview-only as needed.
Check the match preview list, then copy the output with all replacements applied.
Replace every mention of a deprecated function name across a long reference doc.
Swap an old brand name for a new one across all headings and paragraphs.
Find all instances of a misspelled term and replace in one pass.
Regex-replace old repository links with new ones across a README.
Replace platform-specific syntax patterns before importing into a new CMS.
Yes. Free forever, no account required.
Yes. Toggle the Regex checkbox and use any valid JavaScript regex, including capture groups in the replacement.
Not by default. The Skip code blocks option protects content between ``` or ~~~ fences.
Yes. Enable Preview only to see all matches highlighted without modifying the document.
It wraps the search in word boundaries so 'user' won't match inside 'getUserById'.
No. Runs 100% in your browser.