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Regex Tester Pro

Freemium#8 of 23 in Regular Expression Testers

Regex Tester Pro: A compact Chrome regex toolkit with explanations, exports, and safety analysis. Ranked #8 of 23 in Regular Expression Testers by our editors (6.7/10); pricing: Free plan; best for chrome users needing compact regex assistance.

6.7/10Editor score

Try Regex Tester Pro

Regex Tester Pro6.7 Try Regex Tester Pro

At a glance

Editor score
6.7 / 10
Pricing
Free plan
Best for
Chrome users needing compact regex assistance
Free plan
Yes
Regex flavors
JavaScript, Python, Go, Java, PCRE, .NET
Facts checked
21 Sep 2026

Where it wins
- Real-time matches, captures, replacements, and multi-string testing
- Exports patterns to eight programming languages
- Adds explanations, ReDoS analysis, and saved pattern history
Where it doesn't
- Works as a Chrome extension rather than a broader multi-platform tool
- Regex coverage is limited to six listed flavors
- Pro features require either a recurring or lifetime plan

Our verdict on Regex Tester Pro

Regex Tester Pro is a Chrome extension for developers, QA engineers, data engineers, students, and DevOps users who need to test, explain, and debug regular expressions. It combines real-time match highlighting with capture-group inspection, find-and-replace previews with backreferences, multi-string testing, saved pattern history, and right-click context-menu testing. The extension supports JavaScript, Python, Go, Java, PCRE, and .NET regex flavors, making it suited to browser-based work across several programming environments.

The pricing model is freemium. The free plan provides the extension's free functionality, while the Zovo Pro plan adds Pro features across included Zovo Chrome extensions, with Regex Tester Pro included. Zovo Pro is a monthly subscription that renews until cancelled. Zovo Lifetime also includes Regex Tester Pro and provides lifetime Pro access across included Zovo Chrome extensions without subscription renewals. Optional Pro capabilities include AI regex generation and support for multiple regex flavors. Buyers choosing between the paid plans are deciding mainly between recurring access and lifetime access.

Its strongest differentiator is the breadth of assistance in a compact testing workflow: plain-English pattern explanations, code export for eight programming languages, ReDoS safety analysis, capture inspection, replacement previews, and saved history. The extension is also listed as open source, while the original GitHub repository was archived on March 14, 2026; the linked Chrome Web Store listing remained live and showed an August 20, 2026 update. Regex Tester Pro fits Chrome users who want explanations and debugging aids alongside matching. Teams needing a non-Chrome platform, or coverage beyond the six listed flavors, should choose another tool.

Regex Tester Pro pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices re-checked Sep 2026.

See plans on github.com

All 2 Regex Tester Pro plans and prices →

Regex Tester Pro fact sheet

Free plan	Yes
Paid from	Not verified
Regex flavors	JavaScript, Python, Go, Java, PCRE, .NET
Pattern explanation	Yes
Step-through debugger	Not verified
Code generation	Yes
Saved patterns	Yes
Available platforms	Not verified
Deployment	Browser extension
Platforms	Chrome extension
Support	Community
Built for	Solo, Small business (editorial estimate)
Pricing	Free plan (source)
Website	github.com
Facts checked	21 Sep 2026

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Regex Tester Pro vs the competition

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Featured on iTechGuides

Regex Tester Pro is listed in our Regular Expression Testers directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

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Last updated 28 Sep 2026 · How we research and update