Find and Replace
.Any character*0 or more+1 or more?0 or 1\dDigit [0-9]\wWord char\sWhitespace^Start of line$End of line[abc]a, b, or c[^abc]Not a, b, c(abc)Capture group$1Back reference|Or operator{n}Exactly n{n,m}n to m timesFrequently Asked Questions
1 How do I use regular expressions?
Check the "Use Regex" option to enable regular expression patterns. For example, use \d+ to match numbers, or (cat|dog) to match either "cat" or "dog". Use $1, $2, etc. in the replacement field to reference captured groups.
2 What does "Whole Word" matching do?
When enabled, it only matches complete words, not partial matches. For example, searching for "cat" won't match "category" or "concatenate" - only standalone instances of "cat".
3 Can I undo a replacement?
Yes! Click the "Undo" button to revert your last replacement operation. The tool keeps track of your changes so you can safely experiment with different replacements.
4 How do I replace with a newline or tab?
In regex mode, use \n for newline and \t for tab in your replacement text. For example, replacing commas with \n will put each comma-separated item on its own line.
5 Is my text data secure?
Absolutely! All processing happens entirely in your browser. Your text is never sent to any server, stored, or logged. You can even use this tool offline once loaded.