Bulk alt text for Shopify

Your competitors are showing up on
ChatGPT and Google.
Your products aren't.

AltMaster writes ALT text for every product, variant, and collection image in your store, in one bulk run. Get found in Google search, Google Shopping, and AI assistants like ChatGPT and Perplexity.

One bulk run
Variants + collections
Re-run anytime
3 Min
From install to fully optimized catalog
100%
Coverage across products, variants and collections
Install AltMaster Free plan available · Installs in 30 seconds
AltMaster app inside the Shopify admin

Why this matters

Why ALT Text Is Missed at Scale.

Google can't see pixels. ChatGPT can't see pixels. Perplexity can't see pixels. They read ALT text, and when it's missing, your product simply doesn't exist to them.

PRODUCTS 200 IMAGES (W/ VARIANTS) 600 – 1,500 MANUAL ALT-TEXT WRITING 40+ hours Most stores never finish it. Most stores quietly lose traffic.

The Hidden Math

A typical Shopify store with 200 products has 600–1,500 images once you count variants. Manually writing ALT text for each one takes 40+ hours.

Most stores never do it. Most stores quietly lose traffic, to Google, to Google Shopping, and now to every AI assistant that shoppers are asking instead.

AltMaster collapses that 40-hour weekend into a 3-minute bulk run.

Start Optimizing Your ALT Text →
AI-powered shopping

Shoppers don't just Google anymore.
They ask AI.

When someone asks ChatGPT for "a linen shirt under $80" or Perplexity for "leather totes from indie brands," the AI reads ALT text to decide which products to recommend. No ALT text means no recommendation.

U
You
Find me a linen shirt under $80 from a small brand.
C
ChatGPT
Here are a few options based on product descriptions and image ALT text I can read:
Man wearing a sand-colored band-collar linen button-up shirt with the sleeves rolled up
Sand linen shirt
Northwell · $68
Indigo linen button-up shirt on a wooden hanger over a white tee against a light background
Indigo linen shirt
Cedar & Co · $74
Man wearing an olive green long-sleeve linen shirt open over a black tee
Olive linen shirt
Foxhall · $79
How it works

Three steps. No spreadsheets.
No copy-pasting. No 40-hour weekends.

Step 01

Install AltMaster and scan

AltMaster scans your catalog in seconds and shows you exactly how many products, variants, and collection images are missing ALT text.

Scan complete
247 products · 1,143 missing ALT
Step 02

Build your template

Drag in variables: product title, variant, vendor, tags, type. Watch a live preview so you know the exact ALT text you'll generate before you commit.

{product_title} in {variant}
→ Linen shirt in Sand
Step 03

Run it across everything

Hit Generate. ALT text gets written directly into Shopify across every product, variant, and collection. Re-run anytime you add new products.

✓ 1,143 images updated
Took 4 min 12 sec
Try AltMaster
Template builder

Build it once with AltMaster.
Apply it to your whole store.

Mix and match these variables to create ALT text that matches the way you describe products. No generic output, no awkward phrasing.

{product_title} {variant} {product_type} {tags} {vendor}

Drop variables into a template, add your own connecting words ("in," "by," "from"), and AltMaster fills in the rest from your actual Shopify product data.

Start Optimizing Your ALT Text →
Template builder
Your template
{product_title} in {variant} by {vendor}
Live preview
Linen oversized shirt in Sand · Medium by Northwell & Co
Who this is for

If any of these sound like your store,
you need this.

You just migrated to Shopify

WooCommerce, BigCommerce, Magento. Migrations strip ALT text. AltMaster restores image SEO across your whole catalog in one run, so you don't lose ranking during the move.

You sell variants, lots of them

Apparel, accessories, anything with 5–20 colors and sizes per product. Variant-specific ALT text means each color and size can rank on its own keywords.

An SEO audit flagged you

Ahrefs, Semrush, or Lighthouse showed hundreds of "missing ALT" findings? Clear all of them in one run. No more flagged warnings on every report.

Install AltMaster Now
Pricing

Start free. Pay only when you grow.

Install free. Cover up to 50 products on us. Upgrade to Pro for $1.99/mo when your catalog outgrows the free plan.

Free
Get started, no credit card
$0 forever
  • Up to 50 products
  • Bulk ALT generation for products, variants, collections
  • Template builder with live preview
  • Email support
Install Free
FAQs

Questions, answered.

No. By default, AltMaster only fills images with missing or blank ALT text. Overwriting your existing ALT text is opt-in, and you can preview it before committing.
Both. AI assistants read the exact same ALT text Google does. They use it to understand what your products are and decide which ones to recommend when shoppers ask. One ALT text, two channels.
Yes, and that's a core feature. Each variant image receives its own ALT value based on the variant options for that image, so a red shirt and a blue shirt get different ALT text.
Yes. The template builder shows a live preview of the exact ALT text it will write for the products in your catalog, before you click run.
A few minutes for most stores with several hundred products. Larger catalogs scale linearly: a 2,000-product store typically completes in under 10 minutes.
It stays. AltMaster writes ALT text directly into Shopify, not into its own database. Uninstalling the app does not remove the ALT text it wrote.
Yes. Collection images are included in every bulk run, no extra step.

Stop being invisible to AI.

Three minutes from install to a fully optimized catalog. Free up to 50 products.

Install AltMaster