AltGuard vs ALT SEO: AI Alt Text Generator
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for AltGuard, Nov 4, 2026 for ALT SEO.
The short answer
- Only ALT SEO lists a free plan. Paid plans start at $19/month for AltGuard and $29/month for ALT SEO.
- ALT SEO lists 7 features AltGuard’s listing doesn’t mention, including ADA, AI generation, ALT text.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Starter
- · 2,000 product images per month
- · AI-generated alt text via GPT-4o Vision
- · Apply alt text to Shopify with one click
- · WCAG 2.1 AA & EAA compliant
Growth
- · 5,000 AI alt text generations per month
- · AI vision by GPT-4o — highest accuracy
- · Apply alt text to Shopify in one click
- · Bulk scan your entire product catalog
- · Instant EAA & WCAG 2.1 AA compliance
- · Priority email support
Pro
- · 15,000 AI alt text generations per month
- · AI vision by GPT-4o — highest accuracy
- · Apply alt text to Shopify in one click
- · Bulk scan unlimited product catalog
- · EAA, WCAG 2.1 AA & ADA compliant
- · Multi-run batch processing
Free
- · 100 images/month (100% free!)
- · Pay As You Go $1/50 images
Starter
- · 1000 images/month (3¢/image)
- · Bulk Processing
- · Custom Alt Text Format
- · Customizable Prompts
- · Email Notifications
- · Keywords Emphasis
Professional
- · 3000 images/month (2¢/image)
- · Bulk Processing
- · Custom Alt Text Format
- · Customizable Prompts
- · Email Notifications
- · Keywords Emphasis
Enterprise
- · 12000 images/month (1¢/image)
- · Bulk Processing
- · Custom Alt Text Format
- · Customizable Prompts
- · Email Notifications
- · Keywords Emphasis
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureMissing alt text breaks accessibility law AND costs Google rankings. The EAA is now enforceable. ADA lawsuits hit record highs in 2025. Missing alt text on product images is the #1 violation in both. AltGuard fixes your entire catalog in one click. GPT-4o Vision writes accurate alt text directly to Shopify — no copy-paste. EAA · ADA · WCAG 2.1 AA compliant. Better SEO too. Free 3-day trial. No credit card.
ALT SEO AI Alt Text tackles a common Shopify challenge: missing or poor image alt text that hurts SEO performance. Our AI technology creates descriptive, keyword-rich alt text that improves search rankings while making your store accessible to all customers. Working seamlessly in the background, ALT SEO processes new images automatically and lets you customize descriptions to match your brand voice.
- AI-powered alt text generation using GPT-4o Vision for accurate descriptions
- Bulk scan your entire catalog to find all product images missing alt text
- One-click apply—writes alt text directly to Shopify, no copy-paste needed
- The usage dashboard tracks images scanned and applied each billing cycle
- Automatically create AI Alt Text, accessible image descriptions using Open AI
- Process your entire image catalog at once or schedule regular updates
- Tailor AI Alt Text with industry-specific keywords and brand terminology
- Schedule recurring updates to keep alt text fresh and optimized over time
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  AltGuard |  ALT SEO |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | AltGuard | ALT SEO |
|---|---|---|
| App Store rating | Not published | 4.8 ★ |
| App Store reviews | Not published | 62 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | 0% |
FAQ
AltGuard and ALT SEO: common questions
- Is AltGuard or ALT SEO cheaper?
- Only ALT SEO lists a free plan. Paid plans start at $19/month for AltGuard and $29/month for ALT SEO. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- AltGuard lists 1 the others don’t mention, such as Reporting. ALT SEO lists 7 the others don’t mention, such as ADA, AI generation, ALT text, AODA. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for AltGuard, Nov 4, 2026 for ALT SEO; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for AltGuard, Nov 4, 2026 for ALT SEO. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.