PatternBench guides and demonstrations
Learn PatternBench tasks, handle common problems and practise with checked demonstrations using sample data.
Read a guide below, or use the help page to ask a general product question. Interactive demonstrations run on desktop and laptop computers. Written instructions work on any device.
Guides and help pages
Inspect captures and preview a replacement
Find two item codes, inspect their named captures and preview a replacement without changing the source.
Check values that should and should not match
Use positive and negative cases to check a whole-code pattern, with fresh regex state for each value.
Extract selected captures as JSON
Choose one named capture and download only those values, preserving leading zeroes.
Read a compile error and recover with a corrected pattern
Keep the source text while correcting an invalid expression, then check fresh results.