Split and join text
Split and join text lets you split and join text with configurable delimiters, prefixes, and suffixes in your browser.
Regular expression tester
Regular expression tester lets you inspect JavaScript matches, groups, and replacement in a cancellable worker in your browser.
Regular expression tester
⌂ Inputs and results stay in this browser and are not automatically stored or sent.
Waiting for input
Run with the button (no auto-update)Target textTEXT · 0 B
0 lines
Waiting for input
Complete text result
How to use
Enter the target text, pattern, flags, and optional replacement separately. Include both examples that should match and examples that must not.
Inspect match ranges, groups, and replacement output. A timeout does not mean no match. Other regex engines may interpret the same expression differently from JavaScript.
Examples
hello 123, world 456
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(?<number>\d+)Principles and limits
Each input is limited to 102,400 bytes, output to 2,097,152 bytes, and processing to 1,000 ms. Input is never silently truncated.
Guides
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