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Google’s 200 Ranking Factors : Page-Level Factors
11. Keyword in Title Tag: The title tag is a webpage’s second most important piece of content (besides the content of the page) and therefore sends a strong on-page SEO signal.
标题中部署关键字：标题标签是网页第二个最重要的内容（仅次于页面本身内容），它发出了强大的网页搜索引擎优化信号。
12. Title Tag Starts with Keyword: According to Moz data, title tags that starts with a keyword tend to perform better than title tags with the keyword towards the end of the tag:
关键词在标题标签中的位置：还是根据之前SEOMoz的报告，让关键词出现在title标签开头会比让关键词出现在中间甚至末尾具有更好的SEO效果。
Importance Of Query In Title
13. Keyword in Description Tag: Another relevancy signal. Not especially important now, but still makes a difference.
关键词是否出现在description标签：原理和title标签一样，只是重要程度比title略低。
14. Keyword Appears in H1 Tag: H1 tags are a “second title tag” that sends another relevancy signal to Google, according to results from this correlation study:
关键词出现在H1标签：H1标签可以看作是“第二标题”，从这个称号就可以看到重要性了。
Keyword Appears in H1 Tag
15. Keyword is Most Frequently Used Phrase in Document: Having a keyword appear more than any other likely acts as a relevancy signal.
关键词通常是全文使用频率最高的词：有一个关键字出现超过任何其他可能的行为作为一个关联信号。
（翻译者认为：但是我个人来讲不主张刻意这样。让关键词出现在title, description, h1, h2，替换文本，然后文中就不用刻意出现关键词了。毕竟你这个页面的中心是这个词，正常行文的时候不可能不用到这个词。但是如果行文的时候脑子里一直是这个词，那就很可能无意识地就造成关键词堆砌了。）
16. Content Length: Content with more words can cover a wider breadth and are likely preferred to shorter superficial articles. SERPIQ found that content length correlated with SERP position:
文章内容长度：文章更长的话肯定可以覆盖到的内容更多，但是Google可能更倾向于短小精悍的文章。SERPIQ发现，内容长度SERP位置相关。
（翻译者补充：不要盲目拉长文章。一定要保证你的文章内容和中心关键词息息相关，如果为了拉长文章，或者处于解决用户需求的考虑，添加了一些没有太大相关的内容，可能会对Google解析索引你的页面造成影响。实在需要补充一些东西，而且篇幅略长的话，宁愿另外开一个页面，然后相互链接。）
Average Content Length(Words)
17. Keyword Density: Although not as important as it once was, keyword density is still something Google uses to determine the topic of a webpage. But going overboard can hurt you.
关键字密度：虽然不像以前那么重要，但是关键词密度仍是Google用来判断一个网页的主题的主要方式。但是，走死钻牛角尖可能百害无一利。
18. Latent Semantic Indexing Keywords in Content (LSI): LSI keywords help search engines extract meaning from words with more than one meaning (Apple the computer company vs. the fruit). The presence/absence of LSI probably also acts as a content quality signal.
内容中的潜在语义索引关键词（LSI）：潜在语音索引即Latent Semantic Indexing，是搜索引擎语义理解范畴内的概念。如文中出现Apple到底是指苹果公司还是水果？让文章的内容有助于Google理解这些LSI关键词，也许会让Google给予你的内容更高的质量评分。
19. LSI Keywords in Title and Description Tags: As with webpage content, LSI keywords in page meta tags probably help Google discern between synonyms. May also act as a relevancy signal.
Title和Description里面是否出现LSI关键词：除了文章主体内容之外，meta标签里面的LSI关键词也很可能会对你的排名有一定影响。同时也可作为一个关联信号。
20. Page Loading Speed via HTML: Both Google and Bing use page loading speed as a ranking factor. Search engine spiders can estimate your site speed fairly accurately based on a page’s code and filesize.
页面载入速度：Google和Bing都明确表示页面载入速度是排名因素之一，根据页面代码和文件的大小蜘蛛会公平准确的判断页面的打开速度。（翻译者补充：所以尽量精简代码，必要的时候使用CDN。）
21. Duplicate Content: Identical content on the same site (even slightly modified) can negatively influence a site’s search engine visibility.
重复内容：页面上出现重复内容（甚至轻微模仿）肯定会对排名有负面影响。
22. Rel=Canonical: When used properly, use of this tag may prevent Google from considering pages duplicate content.
Rel=Canonical标签：合理使用这个标签也许可以阻止Google认为页面内容重复。
23. Page Loading Speed via Chrome: Google may also use Chrome user data to get a better handle on a page’s loading time as this takes into account server speed, CDN usage and other non HTML-related site speed signals.
Chrome下的页面载入速度：Google会使用Chrome使用者的资料来更准确地判定你的页面载入速度，包括服务器链接速度，是否使用CDN，和一些其他与HTML代码无关的一些载入速度因素。
24. Image Optimization: Images on-page send search engines important relevancy signals through their file name, alt text, title, description and caption.
图片优化：一定的图片优化可以对SEO有正面影响，包括图片的文件名，替换文本，标题，描述和说明。
25. Recency of Content Updates: Google Caffeine update favors recently updated content, especially for time-sensitive searches. Highlighting this factor’s importance, Google shows the date of a page’s last update for certain pages:
最近的内容更新：Google的官方博客指出页面最近更新时间是他们考虑的参数之一，特别针对一些时效性的关键词，最近更新的内容会比较受青睐。（翻译者补充：从SERP页面也可以直接看到页面更新时间）
26. Magnitude of Content Updates: The significance of edits and changes is also a freshness factor. Adding or removing entire sections is a more significant update than switching around the order of a few words.
页面更新的程度：对页面的修改/更新程度也是页面新鲜度的一个标准之一。大面积的增减或者编辑全文，会比小范围的修改的影响更大。（翻译者补充：不管是好的影响还是坏的影响，我觉得这个有点凑数嫌疑）
27. Historical Updates Page Updates: How often has the page been updated over time? Daily, weekly, every 5-years? Frequency of page updates also play a role in freshness.
页面的历史更新记录：这个页面一直以来的更新频率怎样？每天？每周？更新频率同样在新鲜度的评分里面有一席之地。
28. Keyword Prominence: Having a keyword appear in the first 100-words of a page’s content appears to be a significant relevancy signal.
关键词是否突出：让关键词出现在文章的前100词里面会比让关键词出现在后面更有效果。
29. Keyword in H2, H3 Tags: Having your keyword appear as a subheading in H2 or H3 format may be another weak relevancy signal.
关键词是否出现在H2, H3标签：也许是另一个相对较弱的相关因素，SEOMoz的报告里也提到了。（翻译者补充：和H1标签一样，不赘述了。）
30. Keyword Word Order: An exact match of a searcher’s keyword in a page’s content will generally rank better than the same keyword phrase in a different order. For example: consider a search for: “cat shaving techniques”. A page optimized for the phrase “cat shaving techniques” will rank better than a page optimized for “techniques for shaving a cat”. This is a good illustration of why keyword research is really, really important.
关键词的词语顺序：当用户搜”cat shaving techniques”的时候，专门优化过”cat shaving techniques”会比优化“cat shaving techniques”的网页有更多加分。
31. Outbound Link Quality: Many SEOs think that linking out to authority sites helps send trust signals to Google.
网站输出的链接质量：很多SEO人员相信导出到高信任度的权威网站有助于提升自己网站的权威度。
32. Outbound Link Theme: According to Moz, search engines may use the content of the pages you link to as a relevancy signal. For example, if you have a page about cars that links to movie-related pages, this may tell Google that your page is about the movie Cars, not the automobile.
导出链接目标网站的内容主题：还是根据SEOMoz的报告，搜索引擎会根据你导出链接的目标网站的内容作为判定你网页内容的依据之一。譬如，如果你有一个关于车的页面链接到电影相关的页面，Google可能会认为你的网页时讲述与电影车有关的内容而不是汽车。
33. Grammar and Spelling: Proper grammar and spelling is a quality signal, although Cutts gave mixed messages in 2011 on whether or not this was important.
语法和拼写：正确的语法和拼写是你的文章质量的重要标准，Matt Cutts公开声明过这一点。
34. Syndicated Content: Is the content on the page original? If it’s scraped or copied from an indexed page it won’t rank as well as the original or end up in theirSupplemental Index.
内容抄袭：你网页的内容是你原创吗？还是采集或抄袭的那些排名不是太好(甚至被纳入到“Supplemental Index补充索引”里的)的网站上的内容？如果非原创，你的排名不会比这些内容的出处好或者没有排名。 （翻译者补充：古老的名词，有兴趣的可以去搜一下什么是Supplemental Index，可以诶追溯到2003年的一个SEO名词。)
35. Helpful Supplementary Content: According to a now-public Google Rater Guidelines Document, helpful supplementary content is an indicator of a page’s quality (and therefore, Google ranking). Examples include currency converters, loan interest calculators and interactive recipes.
在Supplemental Index里的有价值的内容：根据泄露出来的Google质量评分操作手册，Supplemental Index里的有价值的内容会对网站整体质量有帮助。(当然会对谷歌排名有帮助)举个例子比如货币转换器页面，贷款利率计算器页面，等等。
36. Number of Outbound Links: Too many dofollow OBLs may “leak” PageRank, which can hurt search visibility.
导出链接数量：太多的导出链接数量可能会造成PR值外泄进而影响搜索展现。（翻译者补充：这也是为什么在做外链的时候如果这个页面上太多导出链接，那你做了也白做。一是蜘蛛爬不了那么远，二是等爬到你了也没有PR值可以传递了）。
37. Multimedia: Images, videos and other multimedia elements may act as a content quality signal.
多媒体：页面上的图片，音频，视频等等都有助于页面的质量评分。
38. Number of Internal Links Pointing to Page: The number of internal links to a page indicates its importance relative to other pages on the site.
指向这个页面的内链数量：从这个参数可以看到这个页面在网站内的重要程度。
39. Quality of Internal Links Pointing to Page: Internal links from authoritative pages on domain have a stronger effect than pages with no or low PR.
指向这个页面的内链质量：从比较重要权威的（PR值高的）内部页面链接向这个页面，优化效果更好。
40. Broken Links: Having too many broken links on a page may be a sign of a neglected or abandoned site. The Google Rater Guidelines Document uses broken links as one was to assess a homepage’s quality.
死链：页面上的死链太多绝对不是好事，谷歌操作手册中死链数量是衡量页面质量的一个因素。（翻译者补充：学会使用站长工具和Xenu检测死链可以解决这一问题。）
41. Reading Level: There’s no doubt that Google estimates the reading level of webpages:
Results by reading level for reading level:
But what they do with that information is up for debate. Some say that a basic reading level will help your page rank because it will appeal to the masses. However, Linchpin SEO discovered that reading level was one factor that separated quality sites from content mills.
易读性：毫无疑问Google会把易读性也考虑到排名因素里面去。大部分的SEO认为让文章尽量易读是获得收录及排名的前提，也有一部分人认为提高文章的阅读深度是高质量内容的表现。
42. Affiliate Links: Affiliate links themselves probably won’t hurt your rankings. But if you have too many, Google’s algorithm may pay closer attention to other quality signals to make sure you’re not a “thin affiliate site”.
代理链接：代理链接本身不会对你的排名造成副作用，但是如果数量过于庞大，你也许会引起Google的注意让他们重新审视你的网站质量是以确定你不是一个单薄的附属链接网址。
43. HTML errors/W3C validation: Lots of HTML errors or sloppy coding may be a sign of a poor quality site. While controversial, many in SEO think that WC3 validation is a weak quality signal.
代码错误/W3C验证：过多的不规范甚至错误的HTML代码会让你的网页给Google造成低质量的印象。同时，这也是有争议的，许多Seoer认为WC3验证影响没那么大。（翻译者补充：请善于利用W3C的验证工具。现在浏览器的纠错能力都比较强，网页正常跑不代表代码没有问题。）
44. Page Host’s Domain Authority: All things being equal a page on an authoritative domain will higher than a page on a domain with less authority.
页面所在域名的权重：一个权威网站的页面价值比一个不够权威网站的页面价值要高。（翻译者补充：这个不难理解，比如一个常识：从微软的官网上一个PR3的页面获得一个外链，比在一个小网站PR4的页面获得的外链更有价值。）
45. Page’s PageRank: Not perfectly correlated. But in general higher PR pages tend to rank better than low PR pages.
页面的PR：虽然PR值已经不如以前那么重要，但是平均来看高PR值的页面还是比较容易获得排名。
46. URL Length: Search Engine Journal notes that excessively long URLs may hurt search visibility.
URL长度：搜搜引擎杂志提出太长的URL会对你的排名造成副作用。
47. URL Path: A page closer to the homepage may get a slight authority boost.
URL的路径：距离主页越近的URL权重也就越高。
48. Human Editors: Although never confirmed, Google has filed a patent for a system that allows human editors to influence the SERPs.
人工干预：虽然从未获得官方确认，但是Google的一份文件还是表明会有人工对SERP进行干预的可能。
49. Page Category: The category the page appears on is a relevancy signal. A page that’s part of a closely related category should get a relevancy boost compared to a page that’s filed under an unrelated or less related category.
页面目录：现在很多页面在SERP里面的标题下面（取代URL的位置）可以看到页面所属目录。如果这个页面与这个目录的相关度比较高，就比较容易在相关关键词的SERP里面获得较高排名。
50. WordPress Tags: Tags are WordPress-specific relevancy signal. According toYoast.com:
“The only way it improves your SEO is by relating one piece of content to another, and more specifically a group of posts to each other”
WordPress的标签：WordPress网站的标签页对于相关度来说是一个比较重要的信号。
51. Keyword in URL: Another important relevancy signal.
关键词出现在url中：上一篇文章提到了出现在域名中的重要性，如果关键词无法出现在域名中，请一定确保他能出现在URL中。
52. URL String: The categories in the URL string are read by Google and may provide a thematic signal to what a page is about:
Professional Search Engine Optimization
URL的字符：对于URL中的字符Google也会读取其意义并且作为这个页面归类索引的参考之一。
53. References and Sources: Citing references and sources, like research papers do, may be a sign of quality. The Google Quality Guidelines states that reviewers should keep an eye out for sources when looking at certain pages: “This is a topic where expertise and/or authoritative sources are important…”.
参考来源：对于引用的内容给出参考来源有助于增加页面质量评分。Google的质量评分操作手册有讲到这一点。
54. Bullets and Numbered Lists: Bullets and numbered lists help break up your content for readers, making them more user friendly. Google likely agrees and may prefer content with bullets and numbers.
有序/无序列表：使用有序/无序列表可以帮助Google更好地分割你的内容从而更容易理解。而且这样的内容对于用户的阅读也更友好。
55. Priority of Page in Sitemap: The priority a page is given via the sitemap.xml file may influence ranking.
页面在Sitemap中的权重：这个无需解释，知道Sitemap是什么的都能理解。
56. Too Many Outbound Links: Straight from the aforementioned Quality rater document:
“Some pages have way, way too many links, obscuring the page and distracting from the Main Content”
太多的出站链接:直接引述Google质量评定报告的一段话:“一些页面, 太多的链接,会造成模糊的页面和分散的主题”。
57. Quantity of Other Keywords Page Ranks For: If the page ranks for several other keywords it may give Google an internal sign of quality.
页面的关键词数量：这里的关键词数量是指被索引到而且获得排名的关键词，即可以搜到你这个页面的关键词。这个数量越多Google会认为你的页面质量更高。（长尾关键词）
58. Page Age: Although Google prefers fresh content, an older page that’s regularly updated may outperform a newer page.
页面年龄：虽然Google更喜欢新鲜的内容，但是新鲜的内容也可以出现在一个比较有历史的页面上面。原理和域名年龄相同。
59. User Friendly Layout: Citing the Google Quality Guidelines Document yet again:
“The page layout on highest quality pages makes the Main Content immediately visible”
排版：这个非常重要，是Google对页面质量评分的重要参数。去年Google的一次更新就是针对页面的排版，如果第一屏看不到什么正文，只有各种Banner和广告，那么你可能会收到惩罚。
60. Parked Domains: A Google update in December of 2011 decreased search visibility of parked domains.
闲置域名：对于闲置域名的定义是：注册后没进行使用，或者是只放了少量内容（且通常伴随广告），或者是长期不更新的域名。Google在2011年11月的更新历史中明确表示：对于闲置的域名我们倾向于不把他显示在SERP中。
61. Useful Content: As pointed out by Backlinko reader Jared Carrizales, Google may distinguish between “quality” and “useful” content.
有价值的内容：Google可能在有高质量和有价值内容之间做出区分。
原文名称：Google’s 200 Ranking Factors: The Complete List
原文作者：Brian Dean
