SeoBook is the online resource for search engine optimization SEO, helping over half a million users per month. SeoBook provides free SEO training, an SEO glossary, SEO tools and a robust search engine optimization forum. SeoBook’s founder, Aaron Wall, has been building web sites since 1998. Aaron Wall’s SEO Book is the culmination of his early years of work in the field.
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Http Www Seobook Com Download Your Free Seo Tools
First and foremost, the single most important free search engine optimization tool that anyone interested in a SEO should know about is the Google External Keyword Tool.
As of the time of this writing, it is a free and you do not even need a Google account to use it. Let’s hope that Google keeps it this way.
The tool will show you the number of searches for various key phrases and its level of competition. It will be able to give you a side-by-side comparison of the various key phrases for you to choose which phrase to optimize for. It can also be used to find heavily searched keyword phrases that have low level of competition.
The statistic and data are based upon the number of searches done through the Google search engine. And since Google has the largest search engine market share of over 60% of all the searches in the world, it has a lot of data. If you are looking at free tools, then this should be the primary free tool that you should rely on for your SEO activities. Other Keyword Research tools that can be used in addition to this are Google Insights & Google Trends.
Screaming Frog SEO Spider
The Screaming Frog SEO Spider is a Free SEO Software available for both PC or Mac. It is an excellent website analysis tool especially for checking errors.
SocialMonkee Firefox Plugin
This plugin can be used to build Backlinks. Here is a video demo displaying how you can do this everyday. Download the SocialMonkee Firefox Addon
SEOQuake SEO Extension
A great SEO plugin for Firefox aimed primarily to help with search engine optimization(SEO). This tool allows you to investigate many important SEO parameters of the internet for free. Download Link (Works on Firefox Only): SEOQuake SEO Extension
Rank Tracker by SEOMoz
Rank Tracker is a free rank checker tool online to check your rankings on Google, MSN/Bing & Yahoo. You can also use I Search From to Search Google with a country, language, city and gadget of your choice.
NicheWatch
NicheWatch is a free SEO tool. Type in a keyword and it will provide you with the top competition for that keyword. It will show the competitor’s number of backlinks, page rank, the number of keyword occurrences, and more.
The tool even has a Firefox add-on extension.
SEO Browser
SEO Browser is a fast, efficient, and comprehensive Text SEO analysis tool that helps you examine and understand the various parts of your web page.
Open Site Explorer
Explore backlinks, anchor text and more for free using Open Site Explorer by SEOMoz
Keyword Density & Prominence Tool by Ranks.nl
Broken Link Checker
You can find broken links on all pages of your site with Xenu’s Link Sleuth.
Other Free SEO Tools & Search Engine Optimization Software
These are just a few of the more well-known SEO tools. There are tons of other Free Online SEO Tools on the Internet such as SEOBook SEO Tools (Most Popular being SEO for Firefox by SEOBook.com), SEOMoz SEO Tools, Internet Marketing Ninjas, SEOTools.net Tools and more.
Wordtracker.com (PAID)
Wordtracker.com has a series of SEO tools including Wordtracker Keywords, Wordtracker Link Builder, and Wordtracker Strategizer. Although there is a free trial, the tools are not free and require signup.
The Wordtracker keyword tool is similar to the Google External Keyword Tool. It focuses on obtaining long-tail keywords and related keywords for you. It shows the competition of the key words. And it also shows the KEI (Keyword Effectiveness Index) of the keyword, giving you a single number to gauge how good a particular keyword phrase is.
Wordtracker Link Builder tool helps you find inbound links. Getting inbound links from quality and authoritative sites is not easy, but it is one of the most important strategies of any SEO campaign. It is almost like finding a needle in a haystack. The tool finds relevant link prospects and evaluates each one for you so that you can cherry-picks the links you want to go and obtain. One of the main features is that it shows you where your competitors are getting their links from.
Nichebot.com (PAID)
Like Wordtracker, Nichebot.com helps you discover long-tail keywords. It combines four different databases to do this, including Google data and Wordtracker data.
Nichebot is not a free tool. But nichebotclassic.com is a free “lite” version of that tool which allows up to 20 keyword searches per day. It does require a signup
seo book keyword density
Keyword density — also called keyword frequency — describes the number of times a specific keyword appears on a webpage compared to the total word count.
It’s often reported as a percentage or a ratio; the higher the value, the more your selected keyword appears on your page.
Why Keyword Density Matters
Keywords drive searches. When users go looking for products or services they’ll typically use a keyword that reflects their general intent, and expect search engines to serve up relevant results.
While tools like Google now take into account factors such as geographical area and page authority — defined in part by the number of visitors to your webpage and in part by “dofollow” links from reputable sites that link back to your page — keywords remain a critical factor in website success.
The caveat? You can’t simply “stuff” as many keywords as possible into your content and expect reliable results.
During the wild west days of the first search engines, brands and SEO firms would write low-value content and cram it with keywords and keyword tags, along with links to similarly-stuffed pages on the same site. Not surprisingly, visitors grew frustrated and search engine providers realized they needed a better approach.
Now, keyword stuffing has the opposite effect — search engines will penalize the page rankings of sites that still choose to keyword stuff.
By the Numbers: The Keyword Density Formula
How do you calculate keyword density? The formula is straightforward: Divide the number of times a keyword is used on your page by the total number of words on the page.
Here’s an easy example: Your page has 1,000 words and your keyword is used 10 times. This gives:
10 / 1000 = .001
Multiply this by 100 to get a percentage, which in this case is 1%.
There’s also another formula sometimes used to assess keyword usage: TF-IDF, which stands for “term frequency-inverse document frequency”. The idea here is to assess the frequency of a keyword on specific pages (TF) against the number of times this word appears across multiple pages on your site (IDF). The result helps determine how relevant your keyword is for specific pages.
While TF is straightforward, it’s easy to get sidetracked by IDF. Here, the goal is to understand the rarity of your keyword across multiple documents. IDF is measured in values between 0 and 1 — the closer to 0, the more a word appears across your pages. The closer to 1, the more it appears on a single page and no others.
This is the “inverse” nature of the calculation: lower values mean more keyword use.
Consider this formula in practice. Applied to very common words such as “the” or “but”, the TD-IDF score will approach zero. Applied to a specific keyword, the value should be much closer to 1 — if not, you may need to reconsider your keyword strategy.
Understanding Optimal Keyword Density
While there are no hard and fast rules for keyword density beyond always-relevant “don’t keyword stuff” advice, many SEOs recommend using approximately one keyword for each 200 words of copy.
Your content may perform similarly with slightly more or slightly less, but general wisdom holds that Google and other search engines respond well to keyword density around 0.5%.
It’s also worth remembering the value of keyword variants — words and phrases that are similar, but not identical, to your primary keyword. Let’s say your website sells outdoor lighting solutions. While your highest-value keyword for SERPs is “outdoor lighting”, stuffing as many uses of this keyword into as many pages as possible will reduce rather than improve overall SEO.
Instead, consider keyword variants; terms that are close to your primary keyword but not an exact copy. In the case of “outdoor lighting”, variants such as “garden lighting”, “patio lighting”, “deck lighting” or “landscape lighting” can help your page rank higher without running afoul of keyword-stuffing rules.
Not sure what variants make the most sense for your website? Use the “searches related to” section at the bottom of Google’s SERP for your primary keyword. Here’s why: Google has put significant time and effort into understanding intent, so the “searches related to” section will show you similar terms to your primary keyword.
Keyword Density Tools
While you can do the math on keyword density yourself by calculating the total word and keyword counts across every page on your website, this can quickly become time- and resource-intensive as your website expands and page volumes increase.
Keyword density tools help streamline this process. Potential options include:
1. SEO Review Tools Keyword Density Checker
This free tool is browser-based — simply input your site URL or page text, then complete the “I’m not a robot” captcha to perform a keyword density check. While this tool doesn’t offer the in-depth analytics of other options on the list, it’s a great way to get an overview of current keyword density.
2. SEOBook Keyword Density Analyzer
Similar to the tool above, the SEOBook Keyword Density Analyzer is free — but it does require an account to use. Along with basic keyword density reports, this tool also lets you search for your target keyword in Google, pull data for five of the top-ranked pages using the same keyword, then analyze them to see how your keyword stacks up.
3. WordPress SEO Post Optimizer
If you’d prefer a WordPress plugin for keyword density assessment, consider the WordPress SEO Post Optimizer. This tool comes with a cost — $19 — but checks a host of SEO conditions including keyword density to help ensure your content can rank highly on the SERPs.
4. WPMUDEV SmartCrawl
Another WordPress pluging, WPMUDEV SmartCrawl is free for seven days and then costs $5 per month. Along with keyword density assessment the tool includes automated SEO checkups and reports, assessments for titles and metadata along with in-depth site crawls, scans and reports.
Key(words) to the Kingdom
Want to improve your SERP position and boost site impact? Start with strong keywords.
The caveat? Keyword balance is key to search success. By finding — and regularly assessing — the keyword density of both specific pages and your site at scale, it’s possible to boost relevant SEO impact and avoid the ranking pitfalls of overly-dense keyword distribution.
Conclusion
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