Test Website With More Than 100 Tools (SEO, Speed Test, HTML/CSS, Server Stats) In One Place
Any serious webmaster knows how important it is to test his website regularly for SEO (search engine optimization), website speed and load times, HTML and CSS validation, and other such factors. If you have already done many such tests on your blog, you might already have a ton of bookmarks in your browser, for each of the tools.
Jonas John, a website owner, created a personal project to make the task of website testing easy by collecting the links to all website testing tools in one place. Called Test Everything, this online tool gives you access to more than 100 website tools, organized carefully under several categories including CSS and HTML validators, SEO tools, Social services, Web proxies, Network tools, Text tools, Image tools, and Miscellaneous tools.

Clicking on the category will show up all the resources available, organized in pages. Go through each category and select the check boxes for all the tools you want to test your website with. After you are done with the selection, click ‘Test website’, and you will be given the links to all the selected tools. These links when opened in your browser, will run the selected test on your website, and show the results.

The best part about Test Everything is that it is not just a collection of links. It lets you create bookmarklets for combinations of links, or individual ones. This way you can create bookmarklets such as My Website SEO Test, My Website Speed Optimization Test, and so on.
The next time you want to run those tests, simply open the links in the bookmarklet in several tabs in your browser.

So what are you waiting for? Go ahead and make a complete test of your website using Test Everything.

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Ta for writing this, I was looking everywhere for something similar, but this is just as helpful.
H1 tags are like headlines in a newspaper: The search engines read them first to find out what your page is about. If the spiders find your important keywords in your tags, your page will be seen as more relevant for that search term. Unfortunately many people don’t use H1 tags on their sites because the default styling of an H1 tag is rather big and ugly. In reality it’s very easy to style these tags with CSS so that they look good in your site AND capture the attention of the web spiders.
For web designers, mobile web design is becoming an easy way to acquire new clients. It amazes me how few web design companies are offering this for their clients.
Woot this man know his stuff