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Category HTML/XML Utilities

Output Width (px)

Output Height (px)

Make Responsive (100% width) Privacy Enhanced Mode Show Player Controls Force HTTPS

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About

This tool modernizes legacy YouTube embed codes. In the early web era, YouTube used Adobe Flash via <object> and <embed> tags to display videos. Since Flash was deprecated in 2020, these legacy embeds no longer function in modern browsers, often appearing as broken gray boxes or security warnings.

Our converter parses your old HTML, extracts the unique video_id, and regenerates it as a standards-compliant <iframe>. It supports optional parameters like Privacy Enhanced Mode (using youtube-nocookie.com) and fully responsive CSS wrappers.

Formulas

The core logic involves extracting the Video ID using regular expressions and reconstructing the URL standard.

ID Extraction:

url ∈ {Legacy Formats} &implies; RegEx(url) → id

The transformation logic follows this mapping:

src = https://www.youtube.com/v/id → https://www.youtube.com/embed/id

If privacy is TRUE, the host changes:

host = www.youtube-nocookie.com

Reference Data

Feature	Legacy (Flash)	Modern (HTML5 Iframe)
Tag	<object> / <embed>	<iframe>
Mobile Support	FALSE (Desktop only)	TRUE (Universal)
Security	Low (Vulnerable plugins)	High (Sandboxed)
Performance	Heavy (Plugin load)	Light (Native implementation)
URL Format	/v/VIDEO_ID	/embed/VIDEO_ID
Lazy Loading	FALSE	TRUE (via attribute)

Frequently Asked Questions

This is likely because they use the deprecated Flash

Yes, if the legacy code includes a "list" parameter in the URL, the converter attempts to preserve it in the new iframe source.

When enabled, the iframe domain changes to "www.youtube-nocookie.com". This prevents YouTube from storing information about visitors on your website unless they play the video, which is better for GDPR compliance.

It wraps the in a container

and uses CSS aspect-ratio (or padding hacks) to ensure the video resizes fluidly on mobile devices while maintaining a 16:9 ratio.

Yes. If you paste a legacy link (e.g., http://www.youtube.com/v/dQw4w9WgXcQ) instead of full HTML code, the tool will generate a fresh iframe for that video ID.