
By and large Readability Analysis makes content more readable. So use shorter words and shorter sentences. Grammarly is available both as a browser extension for Chrome and Firefox or an App and improves Grammer and Spelling. This App is available both for free and at a premium. Thus a Readability Score is a number indicating how easy it will be to read a piece of text. In brief, the Readability Checker calculates the number of sentences, words, syllables, and characters in the text. Hence, use more active voice and transition words in your sentences. Generally speaking, transition words act as bridges that connect the ideas in your content. Therefore Readability formulas anticipate the difficulty level of text by analyzing text passages. Thus it measures average word length and sentence length and provides a grade-level score. Background color, writing, typography & hierarchy make content readable and legible for enhancing UX.
Why Readability is Important?
At first, all the text must be easy to read. Obviously, content writing effort will waste off if your text is difficult to understand. Hence Readability Analysis comes in. Therefore, improve readability in WordPress using the Yoast SEO plugin and focus on the content. So a text with high readability means it is easier to read. Similarly, a text with low readability implies that many users will have trouble reading it. For SEO, balance your Flesch-Kincaid level to be neither too high nor too low. Moreover too high means your content is too hard to read. Likewise too low indicates your content is very simple that would lack value and not deserve a thorough read. Therefore it results in your pages’ high bounce rate. Above all users leave without interacting with your content.
Readability Formulas
Google’s algorithm considers ‘ease of reading’ as a factor when ranking sites. Hence Search Engines determine the quality of your site’s content by analyzing its readability. To begin with, Readability Test formulas used for English Text are
- Flesch Reading Ease Score (FRES),
- Flesch-Kincaid grade level,
- Gunning’s Fog Index,
- SMOG index,
- Automated Readability Index (ARI) and
- Coleman-Liau Index.
Readability Analysis: Higher Scores Material, Easier to Read.
All in all the Flesch Reading Ease fig 1.0 calculates how easy your content is to read and outputs a number 0-100. Moreover, it has to do with word length and sentence length.
So lower the result, the more difficult your piece of content is to read. Thus a score of 100 means your piece of content is 100% readable. Hence for a 5th-grade reading level aim at a score of 90-100 text. Comparatively, for college

Readability Analysis: Grade level to Understand Text
In general, Flesch-Kincaid, calculates a readability score. So It focuses attention on sentence length over word length and outputs a scale of a US school grade level. In order to target a business audience, aim for a score of 65.
Overall the Coleman-Liau Index considers the average number of letters per 100 words, and the average number of sentences per 100 words. So an output number of 10.6 means appropriate for a 10-11th-grade high school student.
Accordingly, the Automated Readability Index accounts for the number of characters, words, and sentences. Hence ARI evaluates the grade level needed to comprehend the text. eg: If the ARI outputs the number 10, means students in the tenth grade, ages 15-16 years, should be able to comprehend the text.
Readability Analysis: Years of Education to Understand Text
In particular, Gunning Fog fig 1.1 is the percentage of complex words, higher syllable counts, and a number of sentences. So if you aim for 7 a 12to13-year-old will be able to understand. Thus with a score > 12, you can target University Students.

In brief, SMOG fig 1.2 is based on word length and sentence length. Moreover, SMOG Index number approximates the age needed to understand the text. The Lower the score the better it is but aim for 7. Finally, the SMOG Conversion Chart is given below.

Tools used to measure Readability
In general, many tools are available to measure Readability. So the preview text of this Article (referred to as input text) was tested for Readability?
Hemingway Editor
The ‘preview text’ pasted in the Hemingway Editor fig 1.3 yielded results as shown below-

So use this Hemingway App to find excessive adverbs and passive voice. As a result, it highlights long sentences which you can split. The difficult sentences are also marked in yellow. Hence the test report indicated that the text is suited for Grade 9.
WebFx

Likewise, paste a text or test by URL or test by referer. Six Reading Formulas have been calculated above by WebFx Tool fig 1.4 for the same input. It shows a readability score based on Flesch Kincaid Reading Ease (53.4), Flesch Kincaid Grade Level (9.1), Gunning Fog Score (10.7), SMOG Index (8.9), Coleman Liau Index(13.9), and the Automated Readability Index (9). As a result, the input preview text is shown to be suited for an average grade level of about 10. That is, it can be understood by 15-16-year-old.
Automatic Readability Checker
The Automatic Readability Checker tool will analyze text and output the results. In addition to the six readability formulas mentioned above, it will also take into account the
Linsear Write Readability Formula

The Linsear Write

A transition word connects your sentence with the next. In fact use transition words that consider the functions to make your writing flow naturally. If sufficient transition words are not used, the text will become hard to read. In Yoast SEO Analysis Report, the post should achieve a score of 30% or more for the red button to turn into green.
Active and Passive Voice
The percentage of passive voice, when calculated for your sentence should be low. Difference between an Active Voice and Passive Voice is-
For A
Likewise for Passive voice, the subject of the sentence receives the action by someone. eg: The chess was played by Subhodh. In Yoast SEO the passive voice score should not be more than 10%

Optimizing Readability for SEO
Readability increases the user experience but also improve SEO. To conclude the Principles of Readability Analysis have been applied to this post. Accordingly, the results have reflected in the Yoast SEO Readability Analysis report. In the report note that all buttons have turned to green. Using transition words in text for readability is just one aspect of SEO. Hence all content has to be optimized for Search Engines so that it appears in the front results.
Nowadays especially it is the age of the internet. However, Bots or spiders track all activity on the web. Obviously, Readability has to satisfy humans and not search engines. Then only will they return to your site for more.