HTML Syntax detection

Resources collected on the network:

HTML Online Editing
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http://tool.oschina.net/codeformat/

Edit your code in the text box, and then click the Submit button to test the results
Http://www.w3school.com.cn/tiy/t.asp?f=html_basic

Html/css/javascript Online Code run tool
Http://www.runoob.com/runcode

Online Code Tester
Http://tool.pmedu.org/text.html

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GitHub's tools can be perfected later

HTML tag Integrity verification: Tecate.js
Https://github.com/kevinburke/tecate

HTML Grammar Validation Tool
HTML validator is a validation tool for the HTML language. You can use this tool to check out syntax errors for HTML files, such as missing bracket pairs, extra spaces, or no pairs of double quotes
And so on can be checked out.

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HTML Syntax detection