WebP Image Optimizer vs Zen Image Optimizer
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 WebP Image Optimizer, Oct 14, 2026 for Zen Image Optimizer.
The short answer
- Both list a free plan. Paid plans start at $10/month for WebP Image Optimizer and $9.99/month for Zen Image Optimizer.
- WebP Image Optimizer lists 3 features Zen Image Optimizer’s listing doesn’t mention, including Auto-optimization, File upload, Format conversion.
Head to head
Free
- · 25 images included
- · Bulk scan & optimize all products
- · Preview before every change
- · Theme & files banner optimization
- · Upload & convert tool
Starter
- · 1,000 image optimizations per month
- · Bulk scan & optimize all products
- · Optimize entire store in one click
- · Theme & files banner optimization
- · Upload & convert tool
Growth
- · 10,000 image optimizations per month
- · Bulk scan & optimize all products
- · Optimize entire store in one click
- · Theme & files banner optimization
- · Upload & convert tool
Pro
- · 100,000 image optimizations per month
- · Bulk scan & optimize all products
- · Optimize entire store in one click
- · Theme & files banner optimization
- · Upload & convert tool
Free
- · 30-day backups + one-click restore
- · 50 optimizations / month
- · Catalogue scan + savings estimate
- · In-place rewrite — same image URL
- · Preview on 5 of your own images
Starter
- · 1,500 optimizations / month
- · Bulk selection from the image list
- · Email support
- · Lossless, Balanced and Aggressive preset
- · Optional downscaling (longest-edge cap)
Advanced
- · 5,000 optimizations / month
- · Automatic mode — new and updated product
- · Everything in Starter
- · Run history with per-image before/after
Pro
- · 15,000 optimizations / month
- · Everything in Advanced
- · Priority support
- · Restore an entire run
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureWebP Image Optimizer compresses your Shopify store's product images and theme files to WebP format, significantly smaller than JPEG and PNG with no visible quality loss. Optimize product images with one click for all products. Use the collections view for targeted optimization. Theme and banner images are supported with the same URL preserved so your theme keeps working without any changes.
Zen Image Optimizer compresses and resizes the images already in your store. Each image is rewritten in place: the media ID and the CDN URL stay the same, so themes, links and indexed pages keep working without redirects. Before a bulk run you can preview the result on a sample of your own photos — measured in memory, with nothing uploaded.
- Optimize product images to WebP format in one click
- Theme and banner images optimized with the same URL preserved
- Upload any image and compress it instantly to WebP
- Preview before and after, and approve each change before it goes live
- Catalogue scan — reads size of every product and Files library image, resumable,
- Savings estimate — shows what is optimizable and how much before anything runs
- Preview run — compresses 5 of your own images in memory to measure the real
- Bulk compression — JPEG, PNG and WebP with lossless, balanced or aggressive
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 |  WebP Image Optimizer |  Zen Image Optimizer |
|---|---|---|
| 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 | WebP Image Optimizer | Zen Image Optimizer |
|---|---|---|
| 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 | WebP Image Optimizer | Zen Image Optimizer |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $10/month | $9.99/month(ahead) |
| Longest free trial | Not listed | 7 days |
| Plans listed | 4 | 4 |
Listing
| Measure | WebP Image Optimizer | Zen Image Optimizer |
|---|---|---|
| Shopify category rank | #156(ahead) | #221 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 29, 2026 | Aug 7, 2026 |
| Languages | 1 | 1 |
| Developer | Newyon | ZenSoft Studio |
FAQ
WebP Image Optimizer and Zen Image Optimizer: common questions
- Is WebP Image Optimizer or Zen Image Optimizer cheaper?
- Both list a free plan. Paid plans start at $10/month for WebP Image Optimizer and $9.99/month for Zen Image Optimizer. 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?
- WebP Image Optimizer lists 3 the others don’t mention, such as Auto-optimization, File upload, Format conversion. Zen Image Optimizer lists 1 the others don’t mention, such as Resizing. 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 WebP Image Optimizer, Oct 14, 2026 for Zen Image Optimizer; 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 WebP Image Optimizer, Oct 14, 2026 for Zen Image Optimizer. 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.