PixelTrim 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 Nov 8, 2026 for PixelTrim, Oct 14, 2026 for Zen Image Optimizer.
The short answer
- Only Zen Image Optimizer lists a free plan. Paid plans start at $30/month for PixelTrim and $9.99/month for Zen Image Optimizer.
- PixelTrim lists 4 features Zen Image Optimizer’s listing doesn’t mention, including AI generation, Alt text, Generative fill.
Head to head
Basic
- · AI Alt Text Suggestions OpenAI + Claude
- · Automatic WebP Conversion
- · Before/After Metrics
- · Bulk Processing
- · Core Web Vitals (LCP, FID, CLS)
- · Page Speed Impact Analysis
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 featurePixelTrim helps you run a smooth store without sacrificing image quality. It compresses your product images and converts them to modern WebP format, reducing the large file sizes that slow down pages. You can optimize images in bulk or one product at a time, while keeping the original quality. PixelTrim also writes clear, descriptive alt text for your images using AI, improving accessibility and search visibility.
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.
- Automatic image compression and WebP conversion while preserving quality
- Bulk optimize all product images or fine-tune them one product at a time
- AI-generated alt text for images to support SEO and accessibility
- 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 |  PixelTrim |  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 | PixelTrim | Zen Image Optimizer |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 2 | 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 | PixelTrim | Zen Image Optimizer |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $30/month | $9.99/month(ahead) |
| Longest free trial | Not listed | 7 days |
| Plans listed | 1 | 4 |
Listing
| Measure | PixelTrim | Zen Image Optimizer |
|---|---|---|
| Shopify category rank | #54(ahead) | #221 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 16, 2026 | Aug 7, 2026 |
| Languages | 1 | 1 |
| Developer | PixelTrim | ZenSoft Studio |
FAQ
PixelTrim and Zen Image Optimizer: common questions
- Is PixelTrim or Zen Image Optimizer cheaper?
- Only Zen Image Optimizer lists a free plan. Paid plans start at $30/month for PixelTrim 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?
- PixelTrim lists 4 the others don’t mention, such as AI generation, Alt text, Generative fill, SEO. 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 Nov 8, 2026 for PixelTrim, 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 Nov 8, 2026 for PixelTrim, 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.