Developer Utilities
RegEx Tester & Debugger
Test, build, and debug Regular Expressions with real-time match highlighting, group breakdowns, and flags.
100% Client-Side RegEx Tester & Debugger
//gi
Presets:
Test String Input
Matches Detected: 2
| # | Index | Matched Text |
|---|---|---|
| 1 | 19 | hello@searchzee.com |
| 2 | 42 | sales@example.org |
What is a RegEx Tester & Debugger?
Common RegEx Cheat Sheet
| RegEx Syntax | Description & Behavior |
|---|---|
| `\\d` | Matches any digit character (0-9). |
| `\\w` | Matches word characters (letters, numbers, underscore). |
| `+` | Matches 1 or more occurrences of preceding token. |
| `*` | Matches 0 or more occurrences of preceding token. |
| `[a-z]` | Character class matching lowercase letters. |
Frequently Asked Questions
What regex flags are supported?
Flags include global matching (g), case-insensitive matching (i), and multiline anchor matching (m).
Is my regex test string private?
Yes. All pattern matching executes 100% locally in your web browser JavaScript runtime.
Free, Unlimited & No Sign-Up
| Feature | SearchZee (RegEx Tester & Debugger) | Typical Online Tools |
|---|---|---|
| Sign-up required | ✓ None — use it immediately | Account or email required |
| Usage limits | ✓ Unlimited, no daily caps | Free-tier caps & paywalls |
| Cost | ✓ Free, no paid tier | Freemium upsells |
| Ads | ✓ No ads, no sponsored results | Ad-supported |
| Speed | ⚡ Instant — runs in your browser | Upload, queue, wait |