Image Optimization by Pixi vs PixelUnik: 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 Image Optimization by Pixi, Oct 14, 2026 for PixelUnik.
The short answer
- Both list a free plan. Paid plans start at $3.99/month for Image Optimization by Pixi and $9.99/month for PixelUnik.
- Image Optimization by Pixi lists 3 features PixelUnik’s listing doesn’t mention, including AI generation, Alt text, Compression.
Head to head
Free
Starter
Pro
Business
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
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureImage Optimization helps Shopify store owners improve page load speed and search engine visibility by compressing product images and generating AI-powered alt text. Large, unoptimized images slow down your store and hurt your search rankings. Missing or poor alt tags make your products harder to find and less accessible.
Google 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.
- One-click image compression – Reduce image file sizes to improve page speed
- AI-powered alt text generation – Automatically create descriptive alt tags
- Background and Bulk optimization – Process multiple images at once to save time
- 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
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 |  Image Optimization by Pixi |  PixelUnik |
|---|---|---|
| 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 | Image Optimization by Pixi | PixelUnik |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Image Optimization by Pixi | PixelUnik |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $3.99/month(ahead) | $9.99/month |
| Longest free trial | Not listed | Not listed |
| Plans listed | 4 | 4 |
Listing
| Measure | Image Optimization by Pixi | PixelUnik |
|---|---|---|
| Shopify category rank | #336 | #331(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Feb 12, 2026 | Mar 25, 2026 |
| Languages | 1 | 2 |
| Developer | Dahmani Limited | PixelUnik inc. |
FAQ
Image Optimization by Pixi and PixelUnik: common questions
- Is Image Optimization by Pixi or PixelUnik cheaper?
- Both list a free plan. Paid plans start at $3.99/month for Image Optimization by Pixi and $9.99/month for PixelUnik. 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?
- Image Optimization by Pixi lists 3 the others don’t mention, such as AI generation, Alt text, Compression. 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 Image Optimization by Pixi, Oct 14, 2026 for PixelUnik; 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 Image Optimization by Pixi, Oct 14, 2026 for PixelUnik. 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.