Speed up OpenCart: Proven Technology

PageSpeed OptiPic — automatic optimization OpenCart for requirements Google Pagespeed Insights
What resources are optimized on the site automatically
  • JavaScript
    Merge, Compression, Lazy Loading
  • CSS
    Size compression and load optimization
  • Images
    Compression and conversion with CDN OptiPic
  • Third party widgets
    Online consultants, chats, social networks, etc.
  • Analytics systems
    Google Analytics, Facebook,

What problems and Google Pagespeed Insights recommendations will be improved

Minimize main-thread work

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.

Eliminate render-blocking resources

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.

Reduce unused JavaScript

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.

Reduce unused CSS

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.

Ensure text remains visible during webfont load

Leverage the font-display CSS feature to ensure text is user-visible while webfonts are loading.

Reduce the impact of third-party code

Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading.

Serve static assets with an efficient cache policy

A long cache lifetime can speed up repeat visits to your page.

Reduce JavaScript execution time

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.

Efficiently encode images

Optimized images load faster and consume less cellular data.

Serve images in next-gen formats

Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.

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Комплексное ускорение сайта — от 50 000 руб.
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How to increase the speed of OpenCart on the front-end side (client acceleration)


In addition to compressing the acceleration images OpenCart on the front-end side, one can also achieve through the optimization of other components:

  • Caching of static files on the server side (images, css, js).
  • Combining css.
  • Compressing css.
  • Joining js.
  • Compression js.
  • Transferring css and js to the bottom of the html code page.
  • Disabling unnecessary scripts and widgets.

Accelerating the download OpenCart on the back-end (server acceleration)

Server-side acceleration is the goal of minimizing page generation time by the server. This is usually promoted by the following methods:

  • Changing the hosting or server to a more powerful one
  • Optimization of web server settings (apache, nginx, php-fpm).
  • Optimize the settings for mysql (or another sub-site that the site uses).
  • Caching database queries.
  • Caching queries against third-party APIs.
  • Caching of everything that is possible (Composite site technology and the like)
  • Refactoring and optimization of php-code logic.

The OptiPic experts know all the subtleties of acceleration and are ready to tackle the complex acceleration of your site. Contact us if you need the maximum acceleration of your site.

Improving Page Speed in OpenCart

Page speed is a crucial factor that affects the user experience and search engine ranking of an OpenCart website. Slow-loading pages can drive visitors away and can result in higher bounce rates. In addition, search engines like Google consider page speed as one of the important ranking signals.

1. Optimize Images

Images play a significant role in enhancing the visual appeal of an ecommerce store. However, large image files can significantly slow down page load times. To optimize images, you should compress them without compromising their quality. Several image compression tools or extensions are available that can help you reduce the size of the images without affecting their visual appearance.

2. Enable Caching

Caching is a technique that stores a copy of the webpage on the user's device after the first visit. This enables subsequent visits to load faster by loading the cached version instead of generating the page from scratch. OpenCart comes with built-in caching mechanisms that you can enable in the admin panel. By enabling caching, you can significantly reduce the server load and improve page load speed.

3. Minify CSS and JavaScript Files

Minifying CSS (Cascading Style Sheets) and JavaScript files involves removing unnecessary characters such as whitespace, comments, and line breaks. This can help reduce the file size and improve page load speed. There are various online tools and extensions available that can automatically minify these files for you. It's important to note that you should always keep a backup before making any changes to these files.

4. Utilize Content Delivery Networks (CDNs)

A Content Delivery Network (CDN) is a network of servers distributed across different geographic locations. By hosting static resources like CSS, JavaScript, and images on a CDN, you can deliver them to users from the server closest to their location. This can drastically reduce the latency and improve page load times. OpenCart offers various integration options for popular CDNs such as Cloudflare, which can be easily set up through the admin panel.

5. Remove Unnecessary Extensions and Modules

OpenCart allows the installation of numerous extensions and modules to enhance the functionality of your online store. However, having too many unnecessary or poorly-coded extensions can slow down your website. Regularly review and uninstall any extensions that are not actively used or are known to cause performance issues. Keeping your extensions and modules to a minimum will ensure faster page load times.

6. Optimize Database Performance

A poorly optimized database can significantly impact page load speed in OpenCart. Regularly clean up and optimize your database by removing unnecessary data, optimizing tables, and repairing any errors. You can use built-in tools like phpMyAdmin or third-party extensions to manage and optimize your database efficiently.


Improving page speed in OpenCart is crucial for providing a better user experience and boosting search engine rankings. By optimizing images, enabling caching, minifying CSS and JavaScript files, utilizing CDNs, removing unnecessary extensions, and optimizing database performance, you can significantly enhance the page load times of your OpenCart website.

OptiPic allows you to speed up all CMS, frameworks and self-signed sites
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