Skip to content
TechToolsHQ
NewsReviewsGuidesTech 101Tech SeriesToolsNewsletter
TechToolsHQ

Independent, research-driven tech coverage — breaking news, in-depth reviews, buying guides, and technical tutorials to help you understand and choose with confidence.

Explore
NewsReviewsGuidesTech 101Tech SeriesFree Tools
Legal
About UsOur AuthorsContact UsPrivacy PolicyTerms of ServiceCopyright & DMCAAffiliate DisclosureEditorial PolicyAdvertise With Us

© 2026 TechToolsHQ. All rights reserved.

Tools / Regex tester

Regex tester

Shows each match with its index and capture groups, with toggles for the case-insensitive, multiline and dot-all flags. Syntax errors are reported rather than thrown, and zero-length matches will not hang the page.

Runs entirely in your browser

Loading tool…

Enjoying Regex tester?

TechToolsHQ is an independent, reader-supported tech platform. If this free tool saved you time, solved a problem, or helped your workflow, consider supporting our work. Your support helps us keep our utilities 100% free, private, and ad-free for everyone.

100% optional · Reader supported · Independent researchSupport our work

Related tools

  • URL slug generatorTurn a title into a clean, lowercase, hyphenated URL slug.
  • CSV to JSON converterConvert between CSV and JSON, both directions.
  • Image to base64 data URIInline an image into CSS, HTML or an email.
  • Markdown to HTML converterConvert Markdown to clean semantic HTML with split-screen real-time preview.
  • Cron expression builder & explainerBuild, decode, and preview 5-field cron schedules in human English.
  • YAML ↔ JSON converterConvert configuration data bidirectionally between YAML and JSON syntax.

Browse all tools