Online Readability Checker to Test Reading Ease Level

Paste URL you want to check • Test readability level • Identify what sentences need to be rewritten

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Paste your URL

Use URL for what you want to launch Flesch Kincaid grade level test.

Get readability score

You will get a report with evaluating your content by the Gunning fog index and the Flesch index.

Fix hard to read content

Identify parts of content those are hard to read due highlighting feature and rewrite them.

Grow traffic and sales

Both people and search robots love content that is easy to read. Publish improved content to get more clicks and sales.

What’s inside?

Readability calculator

The Gunning fog index is calculated based on sentence length and word difficulty. The Flesch index indicates how difficult a reading passage is to understand.

Issues highlighting

The part of content those hard to read will be highlighted. So, it easy to identify what sentence or paragraph need to be rewritten.

Online text editor

Rewrite content in online editor. Our tool recheck readability index each 2 seconds. So you will notice changes in the score immediately.


What is readability?

Simply put, readability is an index that denotes the amount of effort a reader should put in order to understand a text. The better this index is, the easier it is to comprehend the material. Generally speaking, readability is determined by the complexity of lexical and syntactical means used in a given piece of writing. In addition, such typographic aspects as font, its size, intervals, and line length, also contribute to the readability index.

How is this index calculated?

The vast majority of formulas dedicated to calculating the readability index comprise several aspects:

  1. Short sentences are usually easier to comprehend than the long ones.
  2. Simple and short words are a lot easier to understand than their counterparts.
  3. Commonly known words are easier to comprehend than some specific terms or old-fashioned words.
Evidently, readability is not that hard to understand, but many people underestimate its value.

Why is readability important?

Any material that has decent readability score is a lot easier to read through and, consequently, understand it clearly. For instance, if a person wants to show off their large vocabulary and uses such words and expressions as commence, in close proximity, facilitate, etc., it negatively affects the readability index as some people may be unaware of them. If the text is hard to comprehend, many people will just stop reading and your thoughts, no matter how brilliant they are, will simply remain unheard.

Another example is complicated language in contracts, where people can hardly understand what they are signing. As a result, to avoid being in an awkward situation, people usually read through a contract several times to understand it fully. Of course, this is not the case when it comes to a web-page content. Just like in the first example, people will simply close the tab with your web-page if they don’t understand what they are reading. To avoid such situations, it’s better to improve the text and make it more readable by using simpler words and syntactic constructions.

What are the effects of readability on SEO?

It is a known fact that search engines do not usually score the readability index, as they pay attention to other aspects like keyword density and uniqueness. At this point, you may ask, why should I care about it, then?

The truth is that the search engine ranking system takes into account users’ behavior. For example, such aspects are considered while ranking this or that page: time spent on the page, bounce rate, exit rate.

As you see, if the text is readable, then users will dedicate their time to check it and, consequently, will stay at your web page longer. As a result, it will be ranked better, as the search engine will understand that people like what you write.

Nobody wants to deal with information that is hard to perceive and comprehend. We live in a fast-paced world, and no one wants to waste their time. Thus, it is our job to make users like what they read.

A well-written article with good readability score is more likely to be read by a bigger number of visitors, thus boosting bounce and exit rates that will result in better SEO.