3 New OpenCart Extensions for Speed, Auctions & AI Content

By Admin | Sep 09, 2026
3 New OpenCart Extensions for Speed, Auctions & AI Content

The eCommerce landscape is constantly evolving, and OpenCart store owners are increasingly looking for better ways to improve website performance, deliver faster shopping experiences, increase customer engagement, and adapt their stores to new technologies.

To address these changing requirements, Purpletree Software has launched three new OpenCart extensions designed to solve important challenges faced by modern online stores:

Each extension addresses a different aspect of modern eCommerce. The AVIF Image Converter focuses on website speed and image optimization, the Auction extension introduces interactive auction-based selling, while the LLMS TXT Generator helps stores prepare and organize their content for AI-friendly discovery and understanding.

Why Purpletree Software Launched These New OpenCart Extensions

Modern online stores need more than basic product and checkout functionality. Customers expect websites to load quickly, merchants need flexible selling models, and the way people discover and interact with online information is changing rapidly.

Large product images can affect page loading performance. Traditional fixed-price selling may not be suitable for every type of product. At the same time, store owners are increasingly interested in making their website content easier for emerging AI systems to understand.

These three new extensions were developed to provide OpenCart merchants with practical tools for addressing these requirements without having to replace their existing eCommerce platform.

Three Extensions for Three Modern eCommerce Requirements

Extension Primary Purpose Main Benefit
AVIF Image Converter Image optimization Smaller images and improved website performance
Auction for OpenCart Auction-based selling More interactive product selling and customer engagement
LLMS TXT Generator AI-friendly content organization Helps structure store information for AI systems

AVIF Image Converter for OpenCart

Website speed is an important part of the modern shopping experience. Online stores often contain hundreds or thousands of product images, banners, category images, and other visual resources.

Large image files can increase the amount of data that visitors need to download. This can affect page loading performance, bandwidth usage, and the overall browsing experience.

The AVIF Image Converter for OpenCart was launched to help merchants convert existing JPG and PNG images into the modern AVIF format.

AVIF can provide smaller image files while maintaining excellent visual quality. The extension can automatically serve AVIF images to compatible browsers while continuing to provide the original image format to browsers that do not support AVIF.



Why Image Optimization Matters for OpenCart Stores

Product images are essential for eCommerce because customers depend on visual information when evaluating products. However, image quality should be balanced with performance.

By reducing unnecessary image file size, merchants can work toward a faster and more efficient storefront while continuing to provide high-quality product visuals.

Key Benefits of the AVIF Image Converter

  • Smaller image file sizes: Convert JPG and PNG images into AVIF to reduce image size while maintaining excellent quality.
  • Better website performance: Smaller images require less data to be transferred to visitors.
  • Core Web Vitals support: Image optimization can contribute to better website performance metrics.
  • Reduced bandwidth usage: Smaller image resources can reduce the amount of data transferred.
  • Automatic browser compatibility: Supported browsers can receive AVIF while unsupported browsers can continue receiving original images.


Basic Features of AVIF Image Converter

Automatic Image Conversion

The extension automatically converts JPG and PNG images into AVIF format, reducing the need for merchants to manually process individual images.

Three Conversion Modes

Merchants can choose from three conversion approaches depending on their server environment and image-processing requirements.

Page Load Mode

Images are converted automatically when they are requested by visitors for the first time.

Cron Mode

Images are processed in the background using scheduled cron jobs, helping reduce image-processing activity during customer visits.

Hybrid Mode

Hybrid mode combines page-load conversion and background processing to provide a balance between image availability and server efficiency.

Multiple Encoding Methods

  • Imagick
  • GD with AVIF support
  • CLI tools such as avifenc and ffmpeg

Smart Browser Detection

The extension automatically detects AVIF browser support. Compatible browsers receive optimized AVIF images, while unsupported browsers continue to receive the original JPG or PNG format.

HTML5 Picture Tag Support

The extension supports the HTML5 <picture> element to help deliver an appropriate image format based on browser compatibility.

Queue-Based Image Processing

A database-driven image conversion queue helps manage image processing efficiently and is particularly useful for stores with large image libraries.

Admin Dashboard

  • View conversion statistics
  • Monitor conversion progress
  • Manage the image processing queue
  • Configure image quality settings

Image Quality and Metadata

Administrators can adjust image quality from 1 to 100 and configure image optimization while supporting preservation of EXIF metadata, ICC color profiles, and XMP metadata.

API and CLI Support

The extension provides REST API and GraphQL support for AVIF images. It also provides CLI commands for generating AVIF images, regenerating existing images, and viewing conversion status.

Theme Compatibility

  • Default OpenCart Theme
  • Journal Theme
  • Custom OpenCart Themes

Explore AVIF Image Converter for OpenCart →


Auction for OpenCart

Not every product needs to be sold through a traditional fixed-price model. Some merchants may benefit from creating competition between customers, introducing limited-time bidding events, or giving shoppers an alternative way to purchase products.

The Auction for OpenCart extension was launched to help OpenCart 4.x merchants turn regular products into auction products.

The extension provides functionality for auction scheduling, pricing, bidding, proxy bidding, Buy It Now, bid history, countdowns, notifications, winner selection, and auction administration.

Why Add Auctions to an OpenCart Store?

Auctions can create a more interactive shopping experience by allowing customers to actively participate in the purchasing process.

Instead of simply viewing a fixed price, customers can place bids during a defined period. This can help merchants create urgency and encourage customers to return to an auction to monitor its progress.



Key Benefits of the Auction Extension

  • Alternative selling model: Add auction-based selling alongside regular products.
  • Customer engagement: Encourage customers to actively participate through bidding.
  • Time-based urgency: Start and end times create a defined bidding period.
  • Flexible pricing: Configure starting prices, bid increments, reserve prices, and Buy It Now prices.
  • Automatic bidding: Allow customers to set private maximum bids through proxy bidding.
  • Automated winner processing: Process expired auctions and select winners based on configured rules.


Basic Auction Features

Complete Auction Management

Administrators can create and manage auction products and configure important auction rules directly from the OpenCart administration panel.

  • Starting price
  • Minimum bid increment
  • Tiered bid increments
  • Reserve price
  • Buy It Now price
  • Auction start time
  • Auction end time

Scheduled Auctions

Merchants can schedule auctions to begin and end at specific times. Before the start time, an auction remains pending, while after activation it becomes available for customer bidding.

Live Auction Countdown

Customers can see a countdown showing:

  • Days
  • Hours
  • Minutes
  • Seconds

Manual Bidding

Logged-in customers can place bids according to the applicable minimum bid requirement. The system validates bids against the starting price or configured bidding increment.



Proxy and Automatic Bidding

Customers can specify a private maximum bid. The system can automatically increase the customer's bid according to the configured increment when another customer places a higher bid, without exceeding the customer's private maximum.

Buy It Now

Merchants can optionally provide a Buy It Now price, allowing customers to immediately purchase an auction product at a predefined price instead of continuing with the bidding process.

Bid History

Customers can view bid history from the auction product page. Depending on administrator settings, bid history can include bid amount, bidder name, bid type, and date/time.

Customer Auction Account

Customers can access their auction activity through their account, including My Bids and Won Auctions.

Automatic Winner Selection

When an auction expires, the system can process the highest valid bid, check the reserve price, save the winner and final price, end the auction, and send configured notifications.

Email Notifications

  • Winner email to customer
  • Winner email to administrator
  • Manual outbid notification
  • Automatic/proxy outbid notification
  • Custom automatic outbid message

Cron-Based Auction Processing

Cron-based processing supports important background activities such as scheduled auction activation, auction expiration, winner selection, final price processing, status updates, and applicable notifications.

Explore Auction for OpenCart →


LLMS TXT Generator for OpenCart

As AI-powered search, assistants, and content discovery continue to develop, online store owners are looking for ways to make their website information easier for AI systems to understand.

The LLMS TXT Generator for OpenCart was launched to help merchants automatically create and manage an AI-friendly llms.txt file for their OpenCart store.

The extension allows administrators to control which store information is included in the generated file, including products, categories, CMS pages, SEO metadata, store URLs, and custom content.



Why Is an LLMS TXT File Useful?

Online stores contain large amounts of structured and unstructured information. Product descriptions, category information, CMS content, URLs, and SEO metadata all contribute to the overall understanding of a website.

The LLMS TXT Generator provides a centralized way to organize selected store information in an AI-friendly text file.

Key Benefits of the LLMS TXT Generator

  • AI-friendly content structure: Organize selected store information in an llms.txt file.
  • Centralized content control: Decide which product, category, CMS, and other information should be included.
  • SEO information support: Include meta titles and meta descriptions.
  • Custom content: Add manually created information to the generated file.
  • Automatic generation: Generate the file manually or through cron.
  • AI content options: Enable AI-generated content and optimized descriptions where configured.


Basic Features of LLMS TXT Generator

General Settings

  • Enable or disable the extension
  • Company name
  • Company description

Category Information

Administrators can choose whether category information should be included and can configure a maximum category limit.

Supported fields include:

  • Name
  • Description
  • Meta Title
  • Meta Description
  • URL

Product Information

Product information can also be included in the generated llms.txt file.

  • Product Name
  • Description
  • Short Description
  • Price
  • Special Price
  • SKU
  • Meta Title
  • Meta Description
  • URL


CMS Page Information

The extension can include CMS pages and their relevant information in the generated file.

  • Page Name
  • Description
  • Meta Title
  • Meta Description
  • URL

Store URL

Merchants can choose to include the store URL within the generated llms.txt file.

Custom Content

Custom content support allows administrators to manually add additional information to the llms.txt file.

Generation Options

  • Manual llms.txt generation
  • Automatic generation using cron

AI Settings

  • Enable AI-generated content
  • Automatically generate descriptions
  • Improve SEO with optimized text

Explore LLMS TXT Generator for OpenCart →


How These Extensions Can Help Modern OpenCart Stores

These three extensions address different areas of store management, but they share a common goal: helping OpenCart merchants adapt their stores to modern eCommerce requirements.

For Better Website Performance

The AVIF Image Converter helps merchants optimize their visual content by converting JPG and PNG images into AVIF and providing browser-aware image delivery.

For More Interactive Selling

The Auction Extension gives merchants the tools required to introduce bidding, scheduled auctions, proxy bidding, Buy It Now, countdowns, and automated winner processing.

For AI-Friendly Store Content

The LLMS TXT Generator provides a structured approach to creating an llms.txt file containing selected products, categories, CMS pages, SEO metadata, store information, and custom content.

Choose the Right Extension for Your Store

Every OpenCart store has different requirements. Some merchants may primarily need better image optimization, while others may want to introduce auctions or prepare their content for AI-powered discovery.

Choose AVIF Image Converter If You Want To:

  • Optimize product and website images
  • Reduce image file sizes
  • Improve website loading performance
  • Support modern AVIF image delivery
  • Manage large image libraries efficiently

Choose Auction for OpenCart If You Want To:

  • Introduce auction-based selling
  • Increase customer participation
  • Create time-based bidding events
  • Support manual and proxy bidding
  • Offer Buy It Now
  • Automatically process auction winners

Choose LLMS TXT Generator If You Want To:

  • Create an llms.txt file automatically
  • Organize store information for AI systems
  • Include product and category information
  • Include CMS and SEO content
  • Add custom content
  • Generate the file manually or through cron

Built for the Future of OpenCart eCommerce

OpenCart continues to provide merchants with a flexible platform for building and managing online stores. However, the needs of eCommerce businesses continue to evolve beyond traditional storefront functionality.

Faster websites, interactive purchasing experiences, and AI-friendly content are becoming increasingly relevant to online businesses.

With the launch of the AVIF Image Converter, Auction for OpenCart, and LLMS TXT Generator, Purpletree Software provides OpenCart merchants with new tools designed around these evolving requirements.

Conclusion

The launch of these three OpenCart extensions represents three practical approaches to improving an online store.

AVIF Image Converter focuses on performance and modern image delivery. Auction for OpenCart focuses on customer engagement and alternative selling. LLMS TXT Generator focuses on organizing website content for AI-friendly discovery and understanding.

Whether your priority is faster image delivery, more engaging product sales, or better structured content for AI systems, these new Purpletree OpenCart extensions provide dedicated functionality that can be added directly to your existing store.

Explore the new OpenCart extensions from Purpletree Software:

  1. AVIF Image Converter for OpenCart
  2. Auction for OpenCart
  3. LLMS TXT Generator for OpenCart

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