W3C Markup Validation（检查网页文件）
W3C's easy-to-use markup validation service, based on SGML and XML parsers.
html
Meta Tags (生成原标签)
With Meta Tags you can edit and experiment with your content then preview how your webpage will look on Google, Facebook, Twitter and more!
Icon Generator（转ico图片工具）
Convert PNG to ICO, JPG to ICO, GIF to ICO. Create favicon.ico and iOS / Android App Icons. Edit a favicon to fit your needs, or search our gallery.