LoyaltyHarbour Image Optimizer vs OptiMark ‑ Image Master
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 3, 2026 for LoyaltyHarbour Image Optimizer, Oct 13, 2026 for OptiMark.
The short answer
- Only LoyaltyHarbour Image Optimizer lists a free plan.
- OptiMark lists 12 features LoyaltyHarbour Image Optimizer’s listing doesn’t mention, including Auto-optimization, Backup, Bulk edit.
Head to head
Image Optimizer: Image Compression and Image SEO Optimization
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 30-day backup
- · 50 images (one-time)
- · Alt Text Optimization
- · Auto/Manual Compression
- · Convert PNG to JPG
- · Filename Optimization
BEGINNER
- · 1000 images/month
- · 30-day backup
- · Alt Text Optimization
- · Auto/Manual Compression
- · Convert PNG to JPG
- · Filename Optimization
STANDARD
- · 2500 images/month
- · 30-day backup
- · Alt Text Optimization
- · Auto/Manual Compression
- · Convert PNG to JPG
- · Filename Optimization
PLUS
- · 30-day backup
- · 5000 images/month
- · Alt Text Optimization
- · Auto/Manual Compression
- · Convert PNG to JPG
- · Filename Optimization
Free
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureWith Image Optimizer, you can easily compress images, optimize alt texts, rename image filenames, and convert 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.
Optimark - Image Master helps Shopify store owners efficiently manage their images with ease. It offers watermarking for brand protection, image compression for faster loading, resizing for platform-specific needs, and conversion to WebP format for performance. By optimizing images, merchants can enhance their site speed, improve SEO, and provide a seamless customer experience, all while saving time and effort.
- Compress images to improve the website loading speed, SEO, and user experience.
- Optimize image alt texts to improve SEO and Google Image Search rankings.
- Rename image filenames to get descriptive, keyword-rich image filenames for SEO
- Convert PNGs to JPEGs to speed up your store and improve user experience.
- Protect your visuals with custom watermarks to maintain brand identity.
- Safeguard your images with unlimited backups, ensuring you never lose them.
- Compress images without losing quality, enhancing site speed and performance.
- Quickly resize your images to fit any platform or device requirement.
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 |  LoyaltyHarbour Image Optimizer |  OptiMark |
|---|---|---|
| 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 | LoyaltyHarbour Image Optimizer | OptiMark |
|---|---|---|
| App Store rating | 4.8 ★ | Not published |
| App Store reviews | 252 | Not published |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | LoyaltyHarbour Image Optimizer | OptiMark |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $9.99/month | No monthly plan listed |
| Longest free trial | Not listed | Not listed |
| Plans listed | 4 | 1 |
Listing
| Measure | LoyaltyHarbour Image Optimizer | OptiMark |
|---|---|---|
| Shopify category rank | #81(ahead) | #289 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 16, 2016 | Oct 3, 2024 |
| Languages | 1 | 1 |
| Developer | Image Optimizer | MDSKRUMI |
FAQ
LoyaltyHarbour Image Optimizer and OptiMark: common questions
- Is LoyaltyHarbour Image Optimizer or OptiMark cheaper?
- Only LoyaltyHarbour Image Optimizer lists a free plan. 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?
- OptiMark lists 12 the others don’t mention, such as Auto-optimization, Backup, Bulk edit, 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 Nov 3, 2026 for LoyaltyHarbour Image Optimizer, Oct 13, 2026 for OptiMark; 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 3, 2026 for LoyaltyHarbour Image Optimizer, Oct 13, 2026 for OptiMark. 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.