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 / Responsive viewport tester & multi-device preview

Responsive viewport tester & multi-device preview

Multi-device responsive layout tester in your browser. Inspect mobile, tablet, and desktop viewports, switch orientations, zoom frames, and test live layouts in side-by-side split screens.

Runs entirely in your browser

Loading tool…

Enjoying Responsive viewport tester & multi-device preview?

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

  • CSS clamp calculator & fluid typography scaleCalculate mathematical clamp() expressions and responsive modular scales without media queries.
  • Open Graph & social meta tag generatorGenerate social meta tags with real-time Google SERP, Twitter, and Facebook previews.
  • Excel formula generator & explainerGenerate Excel and Google Sheets formulas from plain English descriptions and explain complex nested syntax.
  • Base64 encoder & decoderEncode text to Base64 or decode it back, Unicode included.
  • URL encoder & decoderPercent-encode a URL component, or decode one back to readable text.
  • HTML entity encoder & decoderEscape HTML so it displays as text, or decode entities back.

Browse all tools