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The page analyzer analyzes your web page performance by emulating how a web browser would load your page and all resources referenced in it. The page and its referenced resources are loaded and important performance metrics are measured and displayed in a load-bar diagram along with other per-resource attributes such as URL, size, compression ratio and HTTP status code. Each bar has parts of different color corresponding to a performance metric:

We list down 23 amazing tools that can help you improve and keep a track of your startup talent performance.

ZMap is an open-source network scanner that enables researchers to easily perform Internet-wide network studies. With a single machine and a well provisioned network uplink, ZMap is capable of performing a complete scan of the IPv4 address space in under 45 minutes, approaching the theoretical limit of gigabit Ethernet. ZMap can be used to study protocol adoption over time, monitor service availability, and help us better understand large systems distributed across the Internet.

*CIE Color Calculator: Converts among most of the CIE color models as well as providing correlated color temperature and standard RGB conversions. *Companding Calculator: Converts among luminance, CIE L*, density and gamma. Includes both a numeric calculator and a graphical display. *Color Difference Calculator: Computes color differences using several different methods (CIE1976, CIE1994, CIE2000, CMC). *Chromatic Adaptation Calculator: Converts colors between reference whites using different chromatic adaptation algorithms. *CIE Spectral Display: Calculates and displays many useful CIE functions, such as the Standard Observers, the Standard Illuminants and blackbody radiators. *Spectral Calculator Spreadsheets: Calculates colorimetry, densitometry and RGB values from your spectral data. *Levels Calculator: See how you lose levels when you pass data through curves. *ColorChecker Calculator: Performs many spectral calculations on the 24 colors of the ColorChecker chart. *ColorChecker RGB Summaries, Spreadsheets and Lab TIFF File: You will find three things on this page, a) summaries of the ColorChecker colors, expressed in each of many standard RGB color spaces, b) spreadsheets that allow you to find which RGB color space is closest to your RGB values, and c) a computer generated Lab TIFF file of the ColorChecker. *Munsell Display Calculator: Displays the Munsell color set (2734 colors) in xyY, Lab and Luv. This is a useful tool for evaluating uniform perceptual color spaces. Also included is an explanation of the infamous "blue turns purple" problem often seen with printer profiles. *Dot Gain Calculator: Performs the standard Murray-Davies dot gain equation to your density measurements. *Dot Gain from Lab or Profile: Two spreadsheets which calculate dot gain from Lab measurements, also allowing you to measure the dot gain of a CMYK ICC printer profile.

OM2 Core DOM2 Events DOM2 HTML DOM2 Range DOM2 Style (getComputedStyle, …) DOM2 Traversal (NodeIterator, TreeWalker) DOM2 Views (defaultView) ECMAScript HTML4 (, , …) HTTP (Content-Type, 404, …) Media Queries Selectors (:lang, :nth-child(), combinators, dynamic changes, …) XHTML 1.0 CSS2 (@font-face) CSS2.1 ('inline-block', 'pre-wrap', parsing…) CSS3 Color (rgba(), hsla(), …) CSS3 UI ('cursor') data: URIs SVG (SVG Animation, SVG Fonts, …) When taking the test, you should use the default settings of the browser you are testing. Changing the zoom level, minimum font size, applying a fit-to-width algorithm, or making other changes may alter the rendition of the test page without this constituting a failure in compliance. The Acid3 test measures some performance characteristics. The test does not attempt to make any comparisons or judgments as to the performance of any hardware used, and should not be used as a hardware benchmark. If the test is run on a slow computer or device, it may run slowly or not smoothly and this does not imply non-conformance.

DeepPeep is a search engine specialized in Web forms. The current beta version currently tracks 45,000 forms across 7 domains. DeepPeep helps you discover the entry points to content in Deep Web (aka Hidden Web) sites, including online databases and Web services. Advanced search allows you to perform more specific queries. Besides specifying keywords, you can also search for specific form element labels, i.e., the description of the form attributes. You can also try our new Visual Search interface to perform your search!

Tools are best friends to increase productivity, perform better and increase earning. No field of life is untouched from tools.

GTmetrix uses Google Page Speed and Yahoo! YSlow to grade your site's performance and provides actionable recommendations to fix these issues.

SEO Workers Analysis Tool extension allows you to perform a basic analysis of the page in your browser with a single click.

Majestic-SEO provides Competitive Link Intelligence to SEO specialists. We believe we are the planets most comprehensive backlinks provider, and offer a number of tools to allow access to this valuable information. In addition to our free services, we allow registered users to test our services free of charge by generating reports for sites they control. Registration is free, and our highly competitive subscription plans start at low prices, with 1 month minimum commitment, and offer a number of tools to enable analysis of competing domains to be performed. For Enterprise users, we offer an API service for internal use which enables your developers to integrate our data into your existing suite of reports and applications.

Find out if you have been violated and infected with DNS Changer. No software will be downloaded to perform the check.

A lint tool performs static analysis of source code and flags patterns that might be errors or otherwise cause problems for the developer. CSS Lint points out problems with your CSS code. It does basic syntax checking as well as applying a set of rules to the code that look for problematic patterns or signs of inefficiency. The [rules] are all pluggable, so you can easily write your own or omit ones you don't want.

"Now includes Cloud technology with a 99.99% detection rate. Equipped with the latest in security technology, Avira Free Antivirus delivers ultra-fast cloud-based scanning with superior system performance."

Geekbench measures your computer's processor and memory performance. Use the Geekbench Browser to organize and share your Geekbench results with other Geekbench users around the world.

This free online service performs a deep analysis of the configuration of any SSL web server on the public Internet. Please note that the information you submit here is used only to provide you the service.

"TipRanks is a browser application that allows you to instantly see the track record and measured performance of any analyst you come across, so you know who to trust!"

"Site scan Run a quick code scan on any URL to check for out-of-date libraries, layout issues, and accessibility"