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152 lines
5.1 KiB
Markdown
152 lines
5.1 KiB
Markdown
# Search Engine Optimization (SEO)
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A helpful checklist / collection of Search Engine Optimization (SEO) tips and technics.
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## Table of Contents
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* [URL](#url)
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* [Title](#title)
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* [Keywords](#keywords)
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* [Description](#description)
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* [Content](#content)
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* [Headings](#headings)
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* [Images](#images)
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* [Links](#links)
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* [Social Media](#social-media)
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* [Sitemap](#sitemap)
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* [Errors and access](#errors-and-access)
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* [HTAccess](#htaccess)
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* [Performance](#performance)
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* [UX](#ux)
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* [Mobile](#mobile)
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* [Validation and accessibility](#Vvlidation-and-accessibility)
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* [Security](#security)
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* [Search](#search)
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* [Tools](#tools)
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### URL
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* Descriptive URLs: use a descriptive page url, which should reflect your targeted keyword
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* Subdomain or subfolder: subdomains are seen as separate domains
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* Hyphans: split words using hyphans
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* www or no-www: provide both domains, but set a prefered version in Google Webmaster Tools
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* Localisation: chookse a country-specific domain, for better local search results
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### Title
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* every page shound have a unique speaking title (60 - 100 characters)
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```
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<title>Website Title goes here</title>
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```
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### Keywords
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* select specific keywords
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* every page shound have unique keywords
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* max. 10 keywords
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```
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<meta name="keywords" content="10 words">
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```
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### Description
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* every page shound have a unique description
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* max. 160 characters
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```
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<meta name="description" content="max 160 Chars">
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```
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### Content
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* Content matters the most
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* Page Title should appear 3% of content length
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* add ~ 3 internal links
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* use `strong` tag
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* do not provide duplicated content
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* article should be at least 300 words
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### Headings
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* Clear structure `H1` -` H6`
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### Images
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* Alt tag (60 - 70 characters)
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* Use a CDN or a subdomain to allow parallal http-requests
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### Links
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* add meaningful title
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* Only add external links if you got a backlink to your site
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* add `rel="nofollow"` attribute to external links
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### Social Media
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* Social link rank up your site
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* use social snippets [OpenGraph](http://ogp.me/), [Facebook](https://developers.facebook.com/docs/sharing/best-practices), [Twitter](https://dev.twitter.com/cards/getting-started)
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* Authorship information
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`<link rel="author" href="https://plus.google.com/u/0/[GOOGLE+ ID]">`
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`<a href="https://plus.google.com/u/0/[GOOGLE+ ID]?rel=author">Google</a>`
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* [social profiles](https://developers.google.com/webmasters/structured-data/customize/social-profiles)
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```
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<span itemscope itemtype="http://schema.org/Organization">
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<link itemprop="url" href="http://www.your-company-site.com">
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<a itemprop="sameAs" href="http://www.facebook.com/your-company">Facebook</a>
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<a itemprop="sameAs" href="http://www.twitter.com/YourCompany">Twitter</a>
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</span>
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```
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### Sitemap
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* provide a `.xml` sitemap
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### Errors and access
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* provide 403 - Acced denied page
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* provide 404 - Page not found page
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* add a `robots.txt` file
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* Avoid `FILE_NOT_FOUND` errors
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### HTAccess
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* enable GZip
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* enable caching
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### Performance
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* Performance and loading time matters
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* only serve concatenated and minified files
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* if possible no redirects
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* compress images ([ImageOptim](https://imageoptim.com/))
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### UX
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* User friendly site
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* clickable links should not be too small
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### Mobile
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* add viewport tag
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```
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<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0">
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```
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* create a mobile-friendly site ([shown in search results](http://googlewebmastercentral.blogspot.be/2014/11/helping-users-find-mobile-friendly-pages.html))
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* [Mobile-Friendly Test](https://www.google.com/webmasters/tools/mobile-friendly/)
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* [AppLinks](http://applinks.org/documentation/)
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### Validation and accessibility
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* Write valid markup ([HTML Validator](http://validator.w3.org/) [CSS Validator](http://jigsaw.w3.org/css-validator/))
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* use [WAI-Aria](http://www.w3.org/TR/wai-aria/) tags
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* use [RichSnippets](http://schema.org/)
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### Security
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* [HTTPS as a ranking signal](http://googlewebmastercentral.blogspot.be/2014/08/https-as-ranking-signal.html)
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### Search
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* [Provide a custom search](https://developers.google.com/custom-search/) ([schema.org/SearchAction](http://schema.org/SearchAction), [RichSnippet](https://developers.google.com/webmasters/richsnippets/sitelinkssearch?utm_source=wmc-blog&utm_medium=direct-referral&utm_campaign=sitelinks-searchbox))
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### Tools
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* [Google Webmasters](https://www.google.com/webmasters/)
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* [Bing Webmasters](http://www.bing.com/toolbox/webmaster)
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* [Google Analytics](http://www.google.com/analytics/)
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* [PageSpeed Insights](https://developers.google.com/speed/pagespeed/insights/)
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* [AdWords Keyword Tool](https://adwords.google.com/KeywordPlanner)
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* [Google Trends](http://www.google.com/trends/)
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* [Structured Data Testing Tool](http://www.google.com/webmasters/tools/richsnippets)
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* [Structured Data Testing Tool](https://developers.google.com/structured-data/testing-tool/)
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* [Google+ Snippet Creator](https://developers.google.com/+/web/snippet/)
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* [seo tool by feedthebot](http://www.feedthebot.com/tools/)
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* [Twitter card validator](https://cards-dev.twitter.com/validator)
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* [Facebook Debugger](https://developers.facebook.com/tools/debug)
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