AltGenius: Alt Text Optimizer vs SEO Image Optimizer by DMB
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 3, 2026 for AltGenius, Oct 13, 2026 for SEO Image Optimizer by DMB.
The short answer
- Only SEO Image Optimizer by DMB lists a free plan. Paid plans start at $4.99/month for AltGenius and $8.99/month for SEO Image Optimizer by DMB.
- SEO Image Optimizer by DMB lists 3 features AltGenius’s listing doesn’t mention, including Analytics, Image compression, Image optimization.
Head to head
SEO Image ALT TAGS
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Basic
- · Automatic updates
- · Email support
- · Unlimited product images
Free
- · All features included (500 images)
- · Alt Text Optimize
- · Image Optimization
- · Image Rename
Silver
- · All features included (5000 images)
- · Alt Text Optimize
- · Dedicated Support
- · Free Onboarding Call
- · Image Optimization
- · Image Rename
Gold
- · All features included (15000 images)
- · Alt Text Optimize
- · Dedicated Support
- · Free Onboarding Call
- · Image Optimization
- · Image Rename
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAltGenius writes alt text for your product images from a template you choose, using details such as title, type, brand and variant. You see the result on your own products before you start. By default it fills in only images with no alt text, so anything you wrote stays as it is. Alt text with links or embed code, which review and video apps use, is skipped.
Large, unoptimized images slow down your storefront, causing visitors to bounce before they even see your products. Image Optimizer by DMB acts as your store’s automated SEO and performance manager. Our app works quietly in the background to compress file sizes, generate keyword-rich alt-text, and rename your image files.
- Automatically add and optimize all your product image alt texts.
- Customize your alt text template with various variables.
- Schedule an update when you need it.
- Save hours manually inputting alt text for all your product photos.
- Image Renaming -Auto-generate SEO-friendly filenames using customizable template
- Alt-Text Optimization - Add descriptive alt-text for accessibility and SEO
- Image Compression - Reduce file sizes without quality loss for faster loading
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 |  AltGenius |  SEO Image Optimizer by DMB |
|---|---|---|
| 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 | AltGenius | SEO Image Optimizer by DMB |
|---|---|---|
| App Store rating | 4.9 ★ | Not published |
| App Store reviews | 57 | Not published |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | AltGenius | SEO Image Optimizer by DMB |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $4.99/month(ahead) | $8.99/month |
| Longest free trial | Not listed | Not listed |
| Plans listed | 1 | 3 |
Listing
| Measure | AltGenius | SEO Image Optimizer by DMB |
|---|---|---|
| Shopify category rank | #281(ahead) | #408 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Aug 31, 2016 | Jan 26, 2026 |
| Languages | 1 | 1 |
| Developer | Image Optimizer | DiscoverMyBusiness |
FAQ
AltGenius and SEO Image Optimizer by DMB: common questions
- Is AltGenius or SEO Image Optimizer by DMB cheaper?
- Only SEO Image Optimizer by DMB lists a free plan. Paid plans start at $4.99/month for AltGenius and $8.99/month for SEO Image Optimizer by DMB. 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?
- AltGenius lists 1 the others don’t mention, such as ALT text. SEO Image Optimizer by DMB lists 3 the others don’t mention, such as Analytics, Image compression, Image optimization. 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 Nov 3, 2026 for AltGenius, Oct 13, 2026 for SEO Image Optimizer by DMB; 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 Nov 3, 2026 for AltGenius, Oct 13, 2026 for SEO Image Optimizer by DMB. 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.