# iframetest.dev

> Preview sites in an iframe and check framing headers

- Website: https://iframetest.dev/?ref=swipetolaunch&utm_source=swipetolaunch&utm_medium=referral&utm_campaign=markdown
- Score: 67% approval
- Swipes: 3 total — 2 right, 1 left
- Ranked on the board: not yet, needs 5 swipes
- Listing: Free; votes are counted the same as for every listing
- Categories: Developer Tools
- Tags: Web, Testing
- Pricing: free
- Domain Rating: 0/100, a backlink-authority score for iframetest.dev, read 2026-11-05
- Submitted: 2026-11-05
- Page: https://swipetolaunch.com/p/iframetest-dev

## About

iframetest.dev is a free browser tool for testing whether a website can be embedded in an iframe. You enter a public URL and it loads a live preview at desktop, tablet or mobile size. It also fetches the page's response headers and redirects separately, so you can see whether X-Frame-Options or a Content-Security-Policy frame-ancestors directive is blocking the embed.

The tool includes an embed code generator. You set width, height, an accessible title, responsive width, lazy loading, fullscreen and sandbox permissions, then copy the resulting HTML. The site also has standalone generator and header checker pages, plus guides on "refused to connect" errors, X-Frame-Options versus CSP, and responsive iframes.

The FAQ is clear about the limits. The tool checks a public, unauthenticated response, which may differ from what your browser receives. It cannot read cookies or console errors from third-party sites.

## How the score works

The percentage is the raw share of swipes that went right. Rankings weigh that share against the number of swipes (a prior of 25 swipes at 50%), so a high score from a handful of swipes ranks below a slightly lower score from many. Anyone can swipe without an account; each browser or account swipes a product once.