Free product description word counter
Length, readability and keyword density in one pass.
Three steps, no account.
- 1
Paste your copy
A product description, a collection intro or a blog post. It is analysed in your browser.
- 2
Read the numbers
Word and character counts, reading grade, sentence lengths and the words you repeat most.
- 3
Tighten the writing
Split long sentences, vary repeated words, and aim for a reading grade most shoppers find easy.
What it checks
Paste product copy and get word count, reading grade, sentence length distribution and keyword density. Landing copy at a 5th to 7th grade reading level converts roughly twice as well as professional-level prose.
ShopSEO checks this across your whole store and fixes it for you. AI assistant (MCP) in the app
- Word and character count
- Flesch-Kincaid reading grade
- Sentence length distribution
- Keyword density and repetition flags
What each number is telling you.
A report you cannot interpret is just a longer way of saying something is wrong.
Reading grade
Flesch-Kincaid, roughly the school year needed to read it comfortably. For product and landing copy, aim between 5th and 7th grade.
Sentence length distribution
A cluster of very long sentences is usually the real cause of a bad reading score, more than vocabulary is.
Keyword density
How often a term repeats. There is no target to hit. This is here to catch accidental repetition, not to chase a number.
Word count
Useful as a relative measure against what already ranks for your terms. There is no minimum that earns a ranking.
The mechanism, not the platitude.
- 01
Simpler copy converts better
Unbounce’s benchmark data across tens of thousands of landing pages puts conversion at 11.1% for copy at a 5th to 7th grade level against 5.3% for professional-level writing, better than double.
- 02
Shoppers scan before they read
Product copy is skimmed. Short sentences and front-loaded specifics survive skimming; long qualified clauses do not.
- 03
Density targets are a myth
Keyword density has not been a ranking lever for a long time. Writing to a percentage produces copy that reads badly and helps nothing.
What this usually turns up, and the fix.
Four problems that account for most of what this tool reports on a Shopify store.
The finding
Manufacturer copy pasted verbatim
Why it happens
Supplier descriptions imported along with the catalog.
The fix
Rewrite at least the first paragraph. Identical copy across every retailer selling the item gives Google no reason to prefer your page.
The finding
Every sentence over thirty words
Why it happens
Specifications strung together with commas.
The fix
Break at the commas. One claim per sentence.
The finding
The specifics buried at the bottom
Why it happens
Brand story first, material and fit last.
The fix
Lead with what it is made of and how it fits. That is what the customer came to find.
The finding
The same phrase in every paragraph
Why it happens
Deliberate repetition of a target term.
The fix
Say it once, properly. Repetition does not compound.
What this will not tell you.
Every tool has a boundary. Knowing where this one ends is what keeps you from over-reading it.
- Reading grade is a formula over sentence and syllable length. It cannot tell whether the writing is any good.
- It analyses text you paste. It does not fetch your live pages.
More free tools.
All tools- SERP simulatorSee your title and description as a Google result, as you type.
- Meta tag checkerSee every title and description on a page, at the length Google shows.
- Schema markup generatorJSON-LD for products, FAQs and more, written for you.
- Alt text checkerFind every image on a page that a screen reader cannot describe.
Run this continuously instead.
Install ShopSEO free, run your first audit in under a minute, and roll back anything you do not like. No credit card, no theme edits, no lock-in.