Image Optimizer

Image Optimizer

by Squirai

Image Compression, ALT text, Add Watermark, Convert PNG - JPG

4.8 of 5 stars(337 reviews)

SEO Optimization for Image

Compress image and reduce image size while preserving image quality. Automatically optimize image ALT text with customizable templates.

Automation Everything For You

Set and forget! It scans for new images and automatically compress, add ALT text to them. Safely backup original images (Restore anytime)

Watermark To Protect Images

Easily add watermarks to protect your product photos from image thieves. Customize the watermark anyway you wanted. No code required.

About Image Optimizer

Image Compression

The app minimizes your image weight while maintaining the image quality.

  • Compression type - Lossless: reduce image size by 15%, preserve image quality by 100%.
  • Compression type - Lossy: reduce more image size by 30%. You can define your own settings, thus minimize the image weight even more. With proper optimization of images, the app can save a huge website weight, thus naturally make the site load much faster.

Compress All Image Types and Even Other Images (Custom Upload Feature)

  • The app can compress product images, collection images, blog post images, asset images. The compression action can be done manually or in bulk. You can select separate products or collections and check the preview before hitting the Start button.
  • Custom Upload feature: you can manually upload and compress any image.

Automatically Updating ALT Text To Improve SEO Ranking

The search engine can not “read” your product images like scanning text on your website, thus you need image ALT text to make sure Google crawler bot understand what your image is about and able to rank it accordingly. Images with optimized and keyword-rich ALT text can help to improve SEO and get better ranking in Google Image Search.

  • Automatically optimize the ALT text of images in bulk.
  • Provide pre-made templates for Product ALT text. Or you can set your own custom ALT text template. [NEW UPDATE]: You can now choose not to overwrite the old ALT text of products. The ones you already set ALT text will remain the same.

Convert Image Format From PNG To JPG

JPG provides the best image quality with the smallest file size, while PNG tends to be in a much bigger size. Converting image format from PNG to JPG can save you a lot in image weight.

Automation for Image Compression and Image ALT Update

The app will scan for new images (once per week) and automatically optimize them according to your pre-set setting. Even when you log out of the app or Shopify, the automation is still on-going.

Display Text-Based Watermarks On Images

The app includes a watermark on your images to protect images from thieves. With the text-based watermark, you can customize it any way you wanted.

Image Backup and Restore

We always store your original images in at least 30 days so that you can back them up in any case. Just 1 button and you can restore individual images or all images.

Media gallery



Free plan


  • 50 images life-time

  • Product, collection image

  • 30 days backup

Standard Plan


¢1 per image

  • 400 images/month

  • Compress all image types (Select images)

  • Manual upload, ALT text

  • 60 days backup

Professional Plan


0.9¢ per image

  • Free 600 images monthly

  • Auto compression - Auto ALT text, Watermark

  • Include Standard Plan’s features

  • 180 days backup

Unlimited Plan


0.6¢ per image

  • Unlimited images/ month

  • All features (not limited)

  • 365 days backup

* All charges are billed in USD. Recurring charges, including monthly or usage-based charges, are billed every 30 days.

4.8 of 5 stars

The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
  • 5 of 5 stars
    88% of ratings are 5 stars
  • 4 of 5 stars
    10% of ratings are 4 stars
  • 3 of 5 stars
    1% of ratings are 3 stars
  • 2 of 5 stars
    0% of ratings are 2 stars
  • 1 of 5 stars
    2% of ratings are 1 stars

Most recent reviews

Virtuosi Kids

First time I use it and I find it easy, we will see later how the application works... Thank you....

Vsco Therapy

The app is very effective and important for SEO. There was an issue I had one time reaching them for support, but once I did they were very helpful and very responsive!


le COVID-19, nous tenions à vous informer des points suivants. Certes, nous traversons une période d'incertitude, mais nous sommes convaincus d'une chose : la santé et la sécurité de notre équipe et de nos clients sont notre priorité absolue. Nous faisons notre possible pour désinfecter constamment tous nos produits et nos locaux. Notre équipe met tout en œuvre pour préserver sa santé et aider nos clients à protéger la leur. Nous vous prions d'excuser les éventuels retards de livraison de vos commandes. Il est possible que la production et l'expédition soient perturbées par des problèmes mondiaux hors de notre contrôle, et que cela génère un peu d'attente. Nous espérons maintenir les envois de commandes ordinaires du mieux possible, et nous vous remercions de votre patience.