PIX ‑ Image Optimizer 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 PIX, Oct 14, 2026 for PixelUnik.
The short answer
- Both list a free plan. Paid plans start at $7.99/month for PIX and $9.99/month for PixelUnik.
- PIX lists 5 features PixelUnik’s listing doesn’t mention, including Alt text, Compression, File upload.
Head to head
Image Optimizer & page speed optimizer
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
FREE
- · 24-hour support
- · Images Backup
- · Manual optimization
beginner
- · 10000 FREE images every month
- · 24-hour support
- · 30 day image backup
- · Automatic optimizations
- · Manual optimization
advanced
- · 24-hour support
- · 30 day image backup
- · 30000 FREE images every month
- · Automatic optimizations
- · Manual optimization
yearly
- · 24-hour support
- · 30 day image backup
- · 50000 FREE images every month
- · Automatic optimizations
- · Manual optimization
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 featureReduce the Weight and Not the Quality SEO - image optimizer uses a smart combination of the best optimization and lossy compression algorithms to shrink JPEG, GIF and PNG images to the minimum possible size while keeping the required level of quality.
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.
- With lighter images you will gain in speed, user experience and even in SEO.
- Stop fine-tuning your images, they are now automatically optimized.
- Reduce the weight of your images without sacrificing their quality.
- 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 |  PIX |  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 | PIX | PixelUnik |
|---|---|---|
| App Store rating | 3.7 ★ | Not published |
| App Store reviews | 85 | Not published |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
PIX and PixelUnik: common questions
- Is PIX or PixelUnik cheaper?
- Both list a free plan. Paid plans start at $7.99/month for PIX 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?
- PIX lists 5 the others don’t mention, such as Alt text, Compression, File upload, 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 13, 2026 for PIX, 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 PIX, 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.