Other Tools

Reverse String Lorem Ipsum Generator Remove Space English Case Converter Tool Kebab Case Converter Tool Constant Case Converter Tool HTML Tag Remover Text to Emoji Text Statistics Tool Markdown HTML Converter

Regex Replace

Replace text with regular expressions online, with replacement templates, capture group references, named groups, and flag controls.

Regular Expression Pattern

Replacement Template

Flags

Source Text

Replaced Output

Current PatternEnter a pattern to begin replacing.

Replace ModeReplace all matches

Replacement Count0 replacements

Output Length0 characters

Replacement Template Tips

$1 References capture group 1, 2, and so on.
$& References the full current match.
$<name> References a named capture group value.
$$ Outputs a literal dollar sign.

Replacement Details

Review how each match was transformed by the replacement template.

Replacement details will appear here after the pattern finds matches.

Common Replacement Presets

Load a preset to try typical regex replacement workflows.

Reformat Dates

Turn YYYY-MM-DD into MM/DD/YYYY.

Pattern(\d{4})-(\d{2})-(\d{2})

Replacement$2/$3/$1

Source Text

Published: 2024-10-05
Backup: 2025-01-14

Mask Email Addresses

Keep the first character and domain while hiding the rest of the username.

Pattern(?<user>[A-Za-z0-9._%+-])[A-Za-z0-9._%+-]*@(?<domain>[A-Za-z0-9.-]+\.[A-Za-z]{2,})

Replacement$<user>***@$<domain>

Source Text

help(at)example.com
support(at)toolmi.com

Collapse Whitespace

Convert repeated spaces, tabs, and line breaks into a single space.

Pattern\s+

Replacement

Source Text

ToolMi   makes	text
cleanup easier.

Numbered List to Bullets

Convert ordered steps into Markdown bullet points.

Pattern^(\d+)\.\s+(.+)$

Replacement- $2

Source Text

1. Install dependencies
2. Run the build
3. Deploy the app