A good product description does two jobs at once: it helps search engines understand what the page is about, and it helps a shopper decide to buy. The good news is that these jobs mostly point the same way. Clear, specific, original writing that answers buyers' questions tends to rank better and convert better.
Write original copy
If you sell products that other stores also carry, the manufacturer's text is probably on dozens of sites. Search engines have little reason to rank your copy of it above theirs. Write your own, and add what only you know: how it fits, what customers say, how you'd use it.
Use the words customers use
Find out what people actually type:
- your store's own search terms (in Shopify's analytics),
- the search terms in Google Search Console for your product pages,
- the wording in customer emails and reviews.
Use the plain name early ("waterproof hiking boots", not just "Trailblazer X"). Don't stuff keywords; one natural mention in the title, one near the start and related terms where they fit is plenty.
Structure for scanning
A pattern that works for most products:
- One or two sentences on what it is and who it's for.
- A short list of benefits tied to features ("Merino wool, so it stays warm when wet").
- Specifications: dimensions, materials, compatibility, care.
- Answers to common questions: sizing, what's in the box, how long it lasts.
Headings and lists help readers and give search engines a clear outline.
Fill in the Shopify fields that matter
- Product title: clear and specific; this usually becomes the page's main heading.
- Search engine listing: in the product editor you can edit the page title, meta description and URL handle. Write a title under about 60 characters and a description that would make someone click.
- Image alt text: describe the image plainly ("brown leather wallet open showing six card slots"). It helps accessibility and image search.
- URL handle: short and descriptive. If you change it on an existing product, Shopify can create a redirect from the old URL; keep that option on.
Most Shopify themes add product structured data (name, price, availability, reviews) automatically. Check yours with a rich results testing tool.
Avoid thin and duplicate pages
Variants that differ only by color usually belong on one product page with options, not separate pages with near-identical text. Collection pages also benefit from a short, original introduction.
Measure what matters
Search traffic takes weeks to respond, so judge SEO changes over months in Search Console. For conversion, you can A/B test description formats at the template level and compare purchases per visitor with the significance calculator. Expect small effects; the sample sizes are large.
Common questions
Can I use the manufacturer's product description?
You can, but every other store selling the same product probably does too, so it gives search engines no reason to prefer your page. Rewrite it, add your own details, photos and answers to customer questions.
How long should a product description be?
Long enough to answer what buyers need to know, short enough to scan. A short benefit-led opening paragraph plus a list of specifics works for most products. Technical or expensive products often justify more.
Can I A/B test product descriptions?
Yes, though description changes often have small effects that need a lot of traffic to detect. Test at the template level, for example a structured spec list against a paragraph across all products, rather than one product at a time.