内容
指南
把一件事从头做到尾的完整流程。
2026年4月18日
Favicon formats explained: ICO, PNG and SVG
Three formats, three jobs. Where each came from, how browsers choose between them, and why a favicon.ico at the root is still worth shipping in 2026.
阅读 →2026年4月13日
Building a redirect map for a site migration
A redirect map pairs every old URL with its closest new equivalent: exact one-to-one matching, query strings preserved and a single hop to a live page.
阅读 →2026年4月2日
The sitemap that actually gets crawled
A valid sitemap.xml can still be ignored. Declaring it in robots.txt, submitting it in Search Console and using lastmod decide whether it gets crawled.
阅读 →2026年4月2日
robots.txt explained: syntax, wildcards and precedence
Every directive that matters, how Google groups rules by user-agent, why the longest match wins and Allow breaks ties, and which crawlers ignore the file.
阅读 →2026年2月10日
schema.org types worth marking up (and which to skip)
Article, Product, Breadcrumb, Organization and FAQ earn their keep. HowTo and self-serving Review markup mostly do not. Here is what to ship.
阅读 →2026年2月3日
The favicon files every site needs (and what you can skip)
Six files cover every browser, phone and install prompt you care about. Here is the full list, what each one is for, and the link tags that reference them.
阅读 →2026年1月14日
OG image sizes for every platform and the shared safe zone
A single 1200×630 file covers Facebook, X, LinkedIn, Slack and Discord. Keep key content inside the middle 80%; here is the safe zone for each.
阅读 →