mattkersley/Responsive-Design-Testing
A simple HTML page to test out your responsive web design observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5525
- days_rel: n/a
- days_push: 916
- n_releases_24m: 0
Adoption not part of the score
1082 stars · 525 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A simple self-hostable HTML/JavaScript page that displays a website in multiple iframe widths to test responsive web design. It supports permalink-style testing by appending a URL to the testing page address.
Use cases
- test responsive web design at multiple screen widths
- preview a website on phone and tablet sizes
- share a responsive testing link with a teammate
- self-host a responsive design testing tool
- check breakpoints while building a website
When to choose
- you need a quick, zero-dependency way to view a page at common device widths
- you can host the tool on the same site you are testing so iframe navigation works
When to avoid
- you need pixel-perfect viewport emulation or real device testing
- you need to test external sites with in-frame navigation (blocked by browser security)
- you need automated or scripted responsive testing
Facets
application · maturity maintenance
testing developer-tools web-development frontend testing browser responsive-design iframe-testing screen-widths self-hosted web-server
2 sources
- readme: https://github.com/mattkersley/Responsive-Design-Testing · fetched 2026-08-28 · 215c50f75556
- homepage: http://mattkersley.com/responsive · fetched 2026-08-29 · 0c1ac200fd44
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| mattkersley/Responsive-Design-Testing | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="mattkersley/Responsive-Design-Testing")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem