Regex Tester & Explainer

Write, test, and understand regular expressions in real time. Paste your test string and see every match highlighted instantly. The built-in Explainer breaks down each part of your pattern into plain English — so you can understand what the regex actually does. Includes a library of 10+ common patterns. Everything runs in your browser.

Your files never leave your device. Processed locally. 100% private.

Unlocking Tool Engine...

Hoe Te Gebruiken Regex Tester & Explainer

Voltooi uw taak perfect in slechts drie eenvoudige stappen.

1

Enter Your Pattern

Type a regex in the pattern box or pick one from the pattern library.

2

Set Flags

Toggle global (g), case-insensitive (i), multiline (m), or dotAll (s) flags.

3

Read the Explainer

The Explainer panel breaks each part of your regex into plain English, color-coded by type.

Veelgestelde Vragen

Alles wat u moet weten over de Regex Tester & Explainer.

Gerelateerde Hulpmiddelen

Continue working with our suite of free data utilities.

CSV naar Excel

CSV-bestanden converteren naar geformatteerde Excel-werkmappen (.xlsx).

Open tool

Excel naar CSV

Excel-werkmappen (.xlsx, .xls) converteren naar CSV-bestanden — alle bladen of geselecteerde.

Open tool

Mock Data Generator

NEW

Genereer realistische nepgegevens: namen, e-mails, adressen en meer. Exporteer als CSV.

Open tool