Content Readability Checker
Built by a certified Wix SEO expert consultant, this free tool analyses your content and returns a Flesch Reading Ease score, grade level, passive voice percentage, and actionable recommendations to improve clarity and SEO performance.
About the Readability Checker
Test the readability of any Wix page or blog post. Flesch Reading Ease, Flesch-Kincaid Grade Level, average sentence length and adverb density - all in a single pass.
Quick summary
- Flesch Reading Ease score 0-100 (higher is easier)
- Flesch-Kincaid Grade Level target: 7-9 for general UK audiences
- Flags sentences over 25 words and passive voice clusters
- Highlights adverbs and complex words to trim
- Aligns with Google helpful content guidelines
For accurate results, paste at least 100 words. Plain text works best — HTML tags are automatically stripped from the analysis.
Tip from your Wix SEO consultant: Aim for a Flesch score above 60 for most web audiences. A grade level of 7-10 is ideal for blog posts and landing pages.
Readability Best Practices for SEO Content
Target a Flesch score of 60-80
For most websites, a Flesch Reading Ease score between 60 and 80 strikes the right balance between clarity and depth. Scores in this range are readable by the widest audience and tend to perform better in search.
Keep sentences under 20 words on average
Long sentences are harder to parse for both readers and search engines. Break complex thoughts into two shorter sentences. This single change can significantly improve your readability score.
Use active voice over passive voice
Active voice ("We built this tool") is more direct and engaging than passive voice ("This tool was built"). Keep passive voice below 20% of your sentences to maintain reader engagement.
Replace jargon with plain English
Complex, multi-syllable words increase cognitive load. Where possible, use everyday alternatives. "Use" instead of "utilise", "help" instead of "facilitate". Simpler language converts better too.
Structure content with short paragraphs
Online readers scan before they read. Use short paragraphs of 2-4 sentences. White space makes content feel approachable and reduces bounce rate — a positive signal for SEO.
Match grade level to your audience
A B2B SaaS blog may justify a higher grade level than a retail product page. Know your audience and calibrate accordingly. A Wix SEO consultant can tailor content guidelines to your specific niche and goals.
Frequently Asked Questions
Need a Professional Content Readability Audit?
As a certified Wix SEO expert and consultant, Michael Andrews can audit your entire Wix website content for readability, keyword optimisation, and conversion-focused clarity across every page.
How to use this tool
- 1
Paste your text
Paste a blog post, service page copy or product description.
- 2
Run the check
Click Analyse. Scores return instantly for Flesch, FK grade level and sentence length.
- 3
Revise complex sentences
Shorten sentences over 25 words. Break into two. Replace long words with short equivalents.
- 4
Re-run and publish
Target Flesch 60+ and FK grade level 7-9 before publishing to Wix Blog.
Examples & benchmarks
Easy for most UK readers
Rewrite for general audience
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