iframe Preview Tool
Preview how a webpage appears inside an iframe and inspect size, scrolling, and embedding limits.
What is an iframe preview tool?
An iframe preview tool simulates how a webpage appears when embedded inside another page. Enter a URL, choose a common size or custom iframe dimensions, set scrolling and sandbox security, and check whether the page loads correctly. It also generates an iframe tag you can copy into HTML for third-party embeds, video containers, document windows, component demos, and partner integrations.
How to test an iframe embed
- Enter the target http or https URL, click Load, and check the preview on the right.
- Choose a small, video-ratio, or article-area preset, or adjust width and height manually.
- Set responsive width, scrolling behavior, and sandbox mode, then compare the parameter effects.
- Copy the generated iframe code into your HTML and add allow, loading, or other attributes required by your project.
Key iframe preview features
Size presets and responsive width
Small, video-ratio, and article-area presets provide a quick start, while fixed or 100% responsive width fits different containers.
Scrolling behavior
Automatic scrolling suits most cases, while always-on or disabled scrolling helps test overflow inside an embed container.
Sandbox security modes
Strict isolation is useful for static checks, allow-scripts supports pages that need script initialization, and none keeps regular iframe behavior.
Generate embed code directly
The URL, dimensions, scrolling, title, and sandbox settings are reflected in the code box to reduce manual attribute errors.
iframe preview frequently asked questions
Why does the target site refuse to load in an iframe?
The site may send X-Frame-Options or restrict parent pages through Content-Security-Policy frame-ancestors. Login requirements, mixed content, browser extensions, and enterprise policies can also affect embedding. The tool cannot bypass these security rules.
Which sandbox mode should I choose?
Use strict isolation for static or untrusted content. Choose allow-scripts when the page needs initialization, while sandbox restrictions remain. Use none only when you understand the page and need regular iframe behavior. Dependencies on scripts, origins, and popups vary, so continue testing in your production context.
Can I publish the generated iframe code directly?
It is a useful base template, but before publishing you may need loading, allow, referrerpolicy, permissions, accessibility details, and a trusted source. Do not place untrusted pages in an iframe without appropriate boundaries.
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