Writing tools

Readability analysis for writers and marketers

As writers, we're working for the reader. Not your boss and not yourself. This is why readability metrics can be helpful. They are a tool to both get past your ego and management pressure to write badly.


For example, here's the formula for the Automated Readability Index which outputs a grade level.

Readability formula

The point is that all these systems don't actually parse your text - they measure syllables, characters, words and sentences.

Why readability matters

Readers are increasingly impatient and overloaded with copy so even if you're writing for a well-educated and literate audience, it makes sense to write copy that is intelligible to a wider range of people. Busy, smart people will thank you for making it easier to absorb what you are saying.

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Improving your readability


  • The passive voice is used too much.
  • Unnecessary acronyms and abbreviations.
  • Long sentences.
  • Using long words when short ones are better.
  • Spelling and grammatical mistakes. Typos.
  • Technical things like mishandling quotations.

I think these things make it hard to read something because they increase the work that your brain has to do to make sense of the text. There is also an accessibility aspect to all this because some people find reading harder than others. A gristly piece of text will exclude more readers than a more digestible item.

To edit text to get better readability scores, see 10 ways to slim down obese copy.


Memorable, credible and compelling copy


  • Using strong verbs, good analogies, pithy quotations.
  • Eliminating cliches and waffly throat-clearing.
  • Credible data from the real world.
  • Citing believable authorities and people like the reader in evidence.
  • Well-written introductions, titles and subheads
  • Making the first and last sentence of each paragraph strong.




Readability analysis tools

So how do you measure good writing? The hygiene factors that lose readers if you get them wrong are easier to measure. There are statistical tools that will analyse text including Flesch Grade Level, Flesch Reading Ease and FOG. Here are some useful readability tools:

Make a readability check part of your proofreading process and watch the quality of your output improve. You can also use it to fight off managers who want you to write in a 'professional' (ie waffly, hyped-up) way that is actually harder to read and often gets ignored.

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Matthew Stibbe

Matthew is founder and CEO of Articulate Marketing.