iframe Embed Test Tool
Check if third-party websites allow iframe embedding
Professional online iframe compatibility detection tool that supports X-Frame-Options and CSP policy analysis. Free detection of any website's iframe embedding restrictions with real-time detection and actual embed testing features.
Professional iframe Embed Detection Features
X-Frame-Options Detection
Intelligently detects website X-Frame-Options security policies, accurately identifying DENY, SAMEORIGIN, ALLOW-FROM configurations
CSP Policy Analysis
Deep analysis of frame-ancestors directives in Content-Security-Policy, identifying various security restrictions
Multiple Request Methods
Supports HEAD, GET, OPTIONS and other HTTP request methods with automatic fallback handling to improve detection success rate
Actual Embed Testing
Provides real iframe embed testing functionality to verify JavaScript-level restrictions, ensuring result accuracy
Cross-Origin Detection Support
Professional handling of cross-origin requests, supporting HTTPS/HTTP protocol conversion and intelligent network error handling
Detailed Debug Information
Provides complete detection process and debug information to help developers understand the specific reasons for detection results
Frequently Asked Questions
What is iframe embedding? Why do we need detection?
iframe embedding is a technique for embedding one webpage within another. Many websites set security policies to prohibit or restrict iframe embedding to prevent clickjacking attacks and protect user privacy. This tool helps developers quickly detect whether target websites allow embedding.
What's the difference between X-Frame-Options and CSP policies?
X-Frame-Options is an earlier security policy supporting DENY (completely prohibited), SAMEORIGIN (same domain only), ALLOW-FROM (specific domains). CSP's frame-ancestors directive is a more modern alternative providing more flexible configuration options. Our tool detects both policies.
Why do some websites show "may allow embedding" results?
When a website's HTTP response headers don't contain explicit iframe restriction policies, we display "may allow embedding". However, modern websites often prevent embedding through JavaScript and other methods, so we recommend actual embed testing to verify results.
How does the tool handle large websites (like Amazon, Facebook)?
Our tool performs fair real-time detection on all websites without any preset website lists. Large websites typically have complex security policies, and the tool will try multiple HTTP request methods to obtain accurate detection results and provide detailed debug information.
What should I do if detection fails or returns errors?
Detection failure may be caused by various reasons: non-existent websites, network connection issues, anti-crawler protection, etc. The tool will provide specific error messages and suggestions. For 403, 405 errors, it usually indicates strict access control, and such websites typically don't allow iframe embedding.
Usage Instructions
Detection Result Explanation:
Completely Blocked - Website does not allow any iframe embedding
Same Domain Only - Can only be embedded within the same website
Specific Domains Only - Website has whitelist restrictions
May Allow iframe Embedding - Recommend actual testing
Usage Tips:
- • Enter complete URL addresses including http:// or https:// protocol
- • For "may allow embedding" results, strongly recommend actual embed testing
- • Large websites typically have strict security policies, detection results are for reference only
- • Before production use, recommend thorough testing and verification