VisibleThread Readability

Quick-Scan Readability Tools for Content Writers

VisibleThread Readability is a one-click clear language analysis tool for writers looking to improve the clarity and quality of their content. It identifies plain language issues in your documents, on your website or instantly as you type.

Doc Readability

Upload your PDF and Word documents

Web Page Readability

Enter a URL to scan your website content

Text Readability

Simply type or copy & paste your text 

VT Readability Menu

VisibleThread Readability 

Measure Your Content Readability

VisibleThread Readability analyzes your content for plain language and generates actionable scorecards using the following measures:

  • Sentence Length: Sentences with more than 25 words become more difficult to understand
  • Passive Voice: Active voice will increase clarity & strength. E.g. ‘Quality is monitored’ vs. ‘We monitor quality’
  • Education Level: What grade level would be required to read and understand your content?

Reports & Annotated Documents

  • Export and share reports with your team
  • Automatically marks-up your documents with embedded guidance
  • Simple and frictionless fix cycles
  • No need for custom MS Word add-ins

Track Your Analysis History

  • Quick-view or detailed access to all your readability scans
  • Measure improvement by comparing against previous readability scores
Trusted by


“People need well written and accurate information. I want them to be able to find information they understand and that’s the value of our website. Our ability to present information clearly has been due to VisibleThread. I really appreciate that and how well it helps us do our work.”
Lindsay Dudbridge
Manager | Clinical Content / American Society of Clinical Oncology

Tech Specs

You can access VisibleThread tools remotely via a secure environment in the cloud. We can also provide you with an on-premise solution where required.

grey_tickNo software installation required
grey_tickSolutions hosted in the VisibleThread cloud
grey_tickSupport for all major browsers including Safari, Chrome, Firefox, Internet Explorer and Edge
grey_tickWeb content analysis supports any internet facing website independent of hosting provider or CMS used
grey_tickDocument analysis supports all major document formats including MS Word (.docx and .doc) and PDF