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Pagespeed

Fast and optimized pages lead to higher visitor engagement, retention, and conversions. The PageSpeed family of tools is designed to help you optimize the performance of your website. PageSpeed Insights products will help you identify performance best practices that can be applied to your site, and PageSpeed optimization tools can help you automate the process.

Analyze and optimize your website with PageSpeed tools to implement the web performance best practices.
- Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License


Yslow

YSlow analyzes web page performance by examining all the components on the page, including components dynamically created by using JavaScript. It measures the page's performance and offers suggestions for improvement.

YSlow for Firefox is integrated into the Firebug web development tool for Firefox.
- YSlow analyzes web pages and why they're slow


W3C Markup

The Markup Validator is a free service by W3C that helps check the validity of Web documents. Most Web documents are written using markup languages, such as HTML or XHTML. These languages are defined by technical specifications, which usually include a machine-readable formal grammar (and vocabulary). The act of checking a document against these constraints is called validation, and this is what the Markup Validator does.

Check the markup (HTML, XHTML, …) of Web documents
The Markup Validator is a free service by W3C that helps check the validity of Web documents.


W3C CSS

The W3C CSS Validation Service is a free software created by the W3C to help Web designers and Web developers check Cascading Style Sheets (CSS). It can be used on this free service on the web, or downloaded and used either as a java program, or as a java servlet on a Web server. Do you need it? If you are a Web developer or a Web designer, this tool will be an invaluable ally. Not only will it compare your style sheets to the CSS specifications, helping you find errors, typos, or incorrect uses of CSS, it will also tell you when your CSS poses some risks in terms of usability.

Check Cascading Style Sheets (CSS) and (X)HTML documents with style sheets
The W3C CSS Validation Service is a free software created by the W3C to help Web designers and Web developers check Cascading Style Sheets (CSS)


W3C MobileOK

mobileOK Basic is a scheme for assessing whether Web resources (Web content) can be delivered in a manner that is conformant with Mobile Web Best Practices [Best Practices] to a simple and largely hypothetical mobile user agent, the Default Delivery Context.

This document describes W3C mobileOK Basic tests for delivered content
and describes how to emulate the DDC when requesting that content.


OWASP ZAP

The OWASP Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications. It is designed to be used by people with a wide range of security experience and as such is ideal for developers and functional testers who are new to penetration testing as well as being a useful addition to an experienced pen testers toolbox.

The OWASP Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications.


Section 508

These provisions of the standards provide the requirements that must be followed by Federal agencies when producing web pages. These provisions apply unless doing so would impose an undue burden. The key to compliance with these provisions is adherence to the provisions. Many agencies have purchased assistive software to test their pages. This will produce a better understanding of how these devices interact with different coding techniques. However, it always should be kept in mind that assistive technologies, such as screen readers, are complex programs and take extensive experience to master. For this reason, a novice user may obtain inaccurate results that can easily lead to frustration and a belief that the page does not comply with the standards. For example, all screen reading programs use special key combinations to read properly coded tables. If the novice user of assistive technology is not aware of these commands, the tables will never read appropriately no matter how well the tables have been formatted. A web site will be in compliance with the 508 standards if it meets paragraphs (a) through (p) of Section 1194.22. Please note that the tips and techniques discussed in the document for complying with particular sections are not necessarily the only ways of providing compliance with 508. In many cases, they are techniques developed by the Board, the Department of Education, and the Department of Justice that have been tested by users with a wide variety of screen reader software. With the evolution of technology, other techniques may become available or even preferable.

WCAG 2.0

Web Content Accessibility Guidelines (WCAG) 2.0 covers a wide range of recommendations for making Web content more accessible. Following these guidelines will make content accessible to a wider range of people with disabilities, including blindness and low vision, deafness and hearing loss, learning disabilities, cognitive limitations, limited movement, speech disabilities, photosensitivity and combinations of these. Following these guidelines will also often make your Web content more usable to users in general.