PixelUnik: Alt Text Generator vs SEOAi ‑ Image & Speed Optimize
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026.
The short answer
- Both list a free plan. Paid plans start at $9.99/month for PixelUnik and $21/month for SEOAi.
- SEOAi lists 6 features PixelUnik’s listing doesn’t mention, including Compression, File upload, Format conversion.
Head to head
Free
- · 30 free tokens, one time
- · AI alt text, one image at a time
- · SEO file names, one image at a time
- · SEO titles & meta, product by product
Starter
- · 100 tokens/month
- · AI alt text, one image at a time
- · Basic SEO report
- · Compression and WebP conversion
- · Email support
- · Originals preserved
Pro
- · 500 tokens/month
- · AI alt text, one image at a time
- · Full SEO report
- · Originals preserved
- · Priority email support
- · Priority processing
Growth
- · 1,500 tokens/month
- · Alt text for the whole catalogue
- · Auto alt text and WebP on new images
- · Bulk SEO file names
- · Chat and priority support
- · Early access to new features
Free
- · 50 image optimizations/month
- · Image compression
- · Manual optimization
- · WebP conversion
Starter
- · 100 AI credits/month
- · 3-day free trial
- · 500 image optimizations/month
- · Advanced compression
- · Auto-optimizer
- · WebP conversion
Pro
- · 1,000 AI credits/month
- · 2,000 image optimizations/month
- · 3-day free trial
- · Advanced compression
- · Auto-optimizer
- · WebP conversion
Business
- · 3-day free trial
- · 5,000 AI credits/month
- · 5,000 image optimizations/month
- · Advanced compression
- · Auto-optimizer
- · WebP conversion
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureGoogle and screen readers can't see your product photos: they read the alt text. Writing it by hand for a whole catalog is slow work. PixelUnik looks at each image and describes what that photo shows, different for every angle, in one of seven languages. Review it, ask for another, or save it to Shopify.
With SEOAi, you can easily compress images, optimize alt texts, and change PNGs to JPEGs. Compressed and optimized images can improve the loading speed of your store, SEO, and user experience. You can also restore an individual original image or in bulk. In addition, SEOAi will periodically scan your store for new images and optimize them automatically, so there is no need to worry about slow and unoptimized images.
- Compress product images significantly without quality loss
- Optimize images to modern WebP format for faster loading
- Batch optimize multiple images at once from your library
- Track optimization history and results in your dashboard
- Compress images to improve the website loading speed, SEO, and user experience.
- Optimize image alt texts to improve SEO and Google Image Search rankings.
- PNGs to JPEGs to speed up your store and improve user experience.
- Restore an individual image or whole set of images with a press of a button.
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 |  PixelUnik |  SEOAi |
|---|---|---|
| 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 | PixelUnik | SEOAi |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 2 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
PixelUnik and SEOAi: common questions
- Is PixelUnik or SEOAi cheaper?
- Both list a free plan. Paid plans start at $9.99/month for PixelUnik and $21/month for SEOAi. 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?
- SEOAi lists 6 the others don’t mention, such as Compression, File upload, Format conversion, Quality control. 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 14, 2026; 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 14, 2026. 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.