From bd9e319b52c53b9230130759d72e163a1b069d64 Mon Sep 17 00:00:00 2001
From: Marco Biedermann <marco.biedermann@gmx.de>
Date: Mon, 23 Feb 2015 18:58:27 +0100
Subject: [PATCH] add table of content and link headings

---
 readme.md | 62 ++++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 43 insertions(+), 19 deletions(-)

diff --git a/readme.md b/readme.md
index 17d31fc..4ac8fd4 100644
--- a/readme.md
+++ b/readme.md
@@ -1,17 +1,39 @@
 # Search Engine Optimization (SEO)
+A collection of Search Engine Optimization (SEO) tips
 
-## Domain
+## Table of Contents
+* [Domain](#domain)
+* [Title](#title)
+* [Keywords](#keywords)
+* [Description](#description)
+* [Content](#content)
+* [Headings](#headings)
+* [Images](#images)
+* [Links](#links)
+* [Social Media](#social-media)
+* [Sitemap](#sitemap)
+* [Errors and access](#errors-and-access)
+* [HTAccess](#htaccess)
+* [Performance](#performance)
+* [UX](#ux)
+* [Mobile](#mobile)
+* [Validation and accessibility](#Vvlidation-and-accessibility)
+* [Security](#security)
+* [Search](#search)
+* [Tools](#tools)
+
+### Domain
 * use a speaking URL
 * differanciate between subdomain and subdirectory
 
-## Title
+### Title
 * every page shound have a unique speaking title (60 - 100 characters)
 
 ```
 <title>Website Title goes here</title>
 ```
 
-## Keywords
+### Keywords
 * select specific keywords
 * every page shound have unique keywords
 * max. 10 keywords
@@ -20,7 +42,7 @@
 <meta name="keywords" content="10 words">
 ```
 
-## Description
+### Description
 * every page shound have a unique description
 * max. 160 characters
 
@@ -28,7 +50,7 @@
 <meta name="description" content="max 160 Chars">
 ```
 
-## Content
+### Content
 * Content matters the most
 * Page Title should appear 3% of content length
 * add ~ 3 internal links
@@ -36,19 +58,19 @@
 * do not provide duplicated content
 * article should be at least 300 words
 
-## Headings
+### Headings
 * Clear structure `H1` -` H6`
 
-## Images
+### Images
 * Alt tag (60 - 70 characters)
 * Use a CDN or a subdomain to allow parallal http-requests
 
-## Links
+### Links
 * add meaningful title
 * Only add external links if you got a backlink to your site
 * add `rel="nofollow"` attribute to external links
 
-## Social Media
+### Social Media
 * Social link rank up your site
 * use social snippets [OpenGraph](http://ogp.me/), [Facebook](https://developers.facebook.com/docs/sharing/best-practices), [Twitter](https://dev.twitter.com/cards/getting-started)
 * Authorship information
@@ -66,30 +88,30 @@
   </span>
   ```
 
-## Sitemap
+### Sitemap
 * provide a `.xml` sitemap
 
-## Errors and access
+### Errors and access
 * provide 403 - Acced denied page
 * provide 404 - Page not found page
 * add a `robots.txt` file
 * Avoid `FILE_NOT_FOUND` errors
 
-## HTAccess
+### HTAccess
 * enable GZip
 * enable caching
 
-## Performance
+### Performance
 * Performance and loading time matters
 * only serve concatenated and minified files
 * if possible no redirects
 * compress images ([ImageOptim](https://imageoptim.com/))
 
-## UX
+### UX
 * User friendly site
 * clickable links should not be too small
 
-## Mobile
+### Mobile
 * add viewport tag
 
 ```
@@ -100,18 +122,18 @@
 * [Mobile-Friendly Test](https://www.google.com/webmasters/tools/mobile-friendly/)
 * [AppLinks](http://applinks.org/documentation/)
 
-## Validation and accessibility
+### Validation and accessibility
 * Write valid markup ([HTML Validator](http://validator.w3.org/) [CSS Validator](http://jigsaw.w3.org/css-validator/))
 * use [WAI-Aria](http://www.w3.org/TR/wai-aria/) tags
 * use [RichSnippets](http://schema.org/)
 
-## Security
+### Security
 * [HTTPS as a ranking signal](http://googlewebmastercentral.blogspot.be/2014/08/https-as-ranking-signal.html)
 
-## Search
+### Search
 * [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))
 
-## Tools
+### Tools
 * [Google Webmasters](https://www.google.com/webmasters/)
 * [Bing Webmasters](http://www.bing.com/toolbox/webmaster)
 * [Google Analytics](http://www.google.com/analytics/)
@@ -119,6 +141,8 @@
 * [AdWords Keyword Tool](https://adwords.google.com/KeywordPlanner)
 * [Google Trends](http://www.google.com/trends/)
 * [Structured Data Testing Tool](http://www.google.com/webmasters/tools/richsnippets)
+* [Structured Data Testing Tool](https://developers.google.com/structured-data/testing-tool/)
 * [Google+ Snippet Creator](https://developers.google.com/+/web/snippet/)
 * [seo tool by feedthebot](http://www.feedthebot.com/tools/)
+* [Twitter card validator](https://cards-dev.twitter.com/validator)
 * [Facebook Debugger](https://developers.facebook.com/tools/debug)