Dark Reader
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Generates a dark theme for every website.
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Regex Tester
Test regular expressions with real-time highlighting. Use on test text or directly on any web page.
Regex Tester screenshots
Overview
Test regular expressions with real-time highlighting. Use on test text or directly on any web page.
Pricing
Regex Tester is free. There is no paid tier to consider.
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View ExtensionFrequently asked questions
Is Regex Tester free?
Yes, Regex Tester is free to install and use.
What are the best Regex Tester alternatives?
Browse the Productivity category for comparable options.
Related extensions to Regex Tester
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Compare Regex Tester with the obvious rivals
Side-by-side feature tables, pricing and a clear recommendation.
Dark Reader vs MomentumEye comfort on every site, or a calmer new-tab page with focus and intent.Todoist vs ForestCapture and organise tasks from any page, or block the sites that eat the task list.Dark Reader vs TodoistBoth are productivity extensions people shortlist together — see how ratings, install base, pricing and day-to-day use differ.Regex Tester alternativesRanked replacements if Regex Tester is not the right fit.All comparisonsThe full compare hub, grouped by category.