Open one of your Shopify blog posts, right-click an image, and inspect it. Check the alt attribute. There’s a good chance it’s empty, says “image1.jpg,” or reads like a keyword soup someone pasted in to “do SEO.”
Shopify blog image alt text is one of the most ignored ranking signals in e-commerce content. Done right, it opens up Google Images as a traffic source, makes your content accessible to screen reader users, and gives Google’s crawlers context they can’t get from the image file alone. Done wrong, it does nothing — or worse, gets flagged as spam.
Here’s how to write alt text that actually works in 2026.
What Alt Text Does (and Why It Matters More Now)
Alt text — short for alternative text — is a description you attach to an image. It serves three jobs at once:
- Accessibility. Screen readers read alt text aloud so visually impaired users understand what an image shows.
- Fallback. If an image fails to load, the browser displays the alt text instead.
- SEO context. Search engines can’t “see” images the way humans do. Alt text tells Google what the image depicts and how it relates to your page.
That third job matters more than most store owners realize. Google Images drives a meaningful share of all web searches, and for visual product categories — apparel, home goods, food, crafts — image search is a genuine discovery channel. Shoppers browse images, click through to the source, and land on your blog or product page.
If your blog images have no alt text, they’re invisible to that channel. Your competitor’s well-described image ranks; your blank one doesn’t.
The Anatomy of Good Shopify Blog Alt Text
The best alt text is specific, concise, and written for a human first. Here’s the formula.
Be descriptive and specific. Compare these two:
- Weak:
boots - Strong:
women's black leather ankle boots with a two-inch heel
The second version tells Google exactly what the image shows and naturally includes terms shoppers might search. It’s not stuffed — it’s just accurate.
Keep it concise. Aim for roughly 80 to 140 characters. That’s enough detail to be useful without overwhelming a screen reader user who has to listen to it read aloud. Accuracy matters more than hitting an exact character count, but if your alt text runs to a full sentence or two, you’re probably overdoing it.
Write for context, not just literal content. Consider why the image is on the page. A photo of a laptop on a product roundup post shouldn’t just say “a silver laptop on a white background.” It should reflect the product and its relevance — “lightweight 13-inch laptop recommended for travel” — because that’s the image’s purpose in your content.
Skip “image of” and “picture of.” The <img> tag already tells screen readers and search engines it’s an image. Starting with “image of” wastes characters and adds nothing. Lead with the description.
What Not to Do: Keyword Stuffing
The fastest way to turn alt text from an asset into a liability is to cram it with keywords.
Alt text like dog puppy labrador retriever cheap dog food pet supplies discount provides zero accessibility value and is treated as a spam signal by Google. It reads as nonsense to a screen reader user, and Google’s algorithms have flagged this pattern for years.
The rule is simple: describe the image as if you were telling a friend on the phone what’s in the picture. If your description naturally includes a relevant keyword because that keyword accurately describes the image, great. If you’re forcing keywords in that don’t describe what’s shown, you’ve crossed into spam territory.
This is the same principle that governs good on-page SEO generally — write for humans, and the search benefit follows. The same logic applies to your schema markup and structured data: give machines accurate information about your content, and they reward you with better visibility.
Alt Text for Different Image Types in Blog Posts
Not every image in a blog post needs the same treatment.
Product and feature images deserve the most detailed alt text. These are the images shoppers might find through image search. Describe the product, its key visible attributes, and its context within the post.
Diagrams, charts, and infographics should have alt text that conveys the information the visual presents, not just “a chart.” If a chart shows rising organic traffic over six months, say so.
Decorative images — backgrounds, dividers, purely aesthetic flourishes — should have empty alt text (alt=""). This tells screen readers to skip them, which is the correct accessibility behavior. Don’t waste alt text describing visual filler.
Lifestyle and editorial photos should describe the scene in a way that supports the post’s topic. A photo accompanying a post about summer outfits should describe the outfit, not just “a person standing outside.”
How to Add Alt Text in Shopify
Shopify gives you a few places to set alt text, depending on where the image lives.
Blog post images: In the blog post editor, click an image, then look for the image properties or “edit alt text” option. Type your description there. This is the alt text that appears in the rendered blog post.
Product images: Go to Products, open a product, click an image, and use the “Add alt text” field. These carry over when you embed product images in blog content.
Theme and section images: Some theme images set through the theme editor have their own alt text fields. Check your theme’s image blocks.
The catch is consistency. Setting alt text manually on every blog image, every time, is tedious — and it’s the kind of task that quietly gets skipped when you’re busy. That’s where automation earns its keep. BlogneticAI generates blog posts for your Shopify store with descriptive, contextual alt text written into every image from the start, so you’re never publishing blank or generic alt attributes. The descriptions reflect both the image and the surrounding content, exactly the way Google wants them.
Auditing Your Existing Blog Images
If you’ve been publishing for a while, you likely have a backlog of images with missing or poor alt text. Here’s a quick audit:
- Spot-check your top posts. Open your highest-traffic blog posts and inspect the images. Note which have empty, generic, or stuffed alt text.
- Prioritize by traffic and visual appeal. Posts that already rank and contain attractive, search-worthy images are your best candidates for image-search wins.
- Rewrite the worst offenders first. Empty alt text and keyword soup are the highest-impact fixes.
- Make new posts compliant by default. Going forward, treat alt text as a non-negotiable part of publishing, whether you write it manually or generate it automatically.
This audit takes an afternoon for most stores, and the payoff compounds as Google recrawls and starts surfacing your images.
FAQ
How long should Shopify blog image alt text be?
Aim for around 80 to 140 characters — enough to describe the image accurately without overwhelming screen reader users. Accuracy matters more than a strict character count, but if you’re writing more than a sentence or two, trim it down.
Should I put keywords in my alt text?
Only if they accurately describe the image. A relevant keyword that naturally fits the description is fine and helpful. Stuffing multiple unrelated keywords is treated as a spam signal by Google and provides no accessibility value.
Do decorative blog images need alt text?
No. Purely decorative images — backgrounds, dividers, aesthetic flourishes — should have empty alt text (alt="") so screen readers skip them. Reserve descriptive alt text for images that carry meaning or information.
Does alt text actually help SEO?
Yes, indirectly and directly. It gives search engines context to rank your images in Google Images, which is a real discovery channel for visual product categories. It also improves accessibility, which supports overall page quality. It is not a magic ranking lever, but it’s a free signal most stores ignore.
Where do I add alt text in Shopify?
For blog images, use the alt text field in the blog post editor when you click an image. For product images, use the “Add alt text” field under each product image. Some theme images have their own alt text fields in the theme editor.
Stop Publishing Blank Alt Text
Image alt text is a small detail with an outsized payoff. It costs nothing, takes seconds per image, and opens a traffic channel — Google Images — that most Shopify stores never optimize for. Write descriptions that are specific, concise, and genuinely helpful, skip the keyword stuffing, and audit your existing posts.
The stores winning image search aren’t using clever tricks. They’re just describing their images accurately while everyone else leaves the alt field empty.
Want every blog image described correctly without lifting a finger? Start your Shopify blog on autopilot with BlogneticAI.
