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What is an Online AI Image Generator and How Does It Work?

Published:March 21, 2025

Reading Time: 4 minutes

AI image generators have changed the way many people create visuals. Artists, marketers, business owners, freelancers, or any creative individuals curious about digital creativity can use such tools to generate appealing visuals in seconds. But how do AI image generators work? What makes such tools so convenient? And which ones should you try? 

Let’s dive into the details and discover the top three platforms, including Depositphotos AI Image Generator, Midjourney, and Dream.

What exactly are AI image generators?

An AI image generator is an artificial intelligence tool that allows users to create images. This can be done from text descriptions/prompts (text-to-image) or by changing existing images (image-to-image). 

These generators operate using machine learning models—for instance, deep learning techniques like generative adversarial networks (GANs) or diffusion models. The images they produce can be highly realistic or stylized, depending on the needs and the prompt instructions. Currently, around 34 million new AI-generated images are created on a daily basis. 

How AI image generators work and where they are used

AI image generators are trained on large datasets of images and text to learn visual patterns. They use neural networks (like transformers or diffusion models) to generate or modify images based on learned relationships. If a user isn’t satisfied with the initial visual, they can refine the output in iterations. 

These days, people use online AI image generators to create:

  • Digital artwork, concept art, and illustrations;
  • Social media visuals, ads, and product mockups;
  • Characters, backgrounds, and visual effects for movies and films;
  • Product designs or interior layouts.

As you can see, the use cases can be quite diverse and apply to various industries. 

5 benefits of using online AI image generators

The number of AI tool users is growing significantly and is forecasted to reach 729.11 million by 2030. What makes such solutions, and online AI image generators in particular, so popular? There are several main reasons:

  1. They don’t require installation. AI image generators are accessible online from any device with a web browser. This means you don’t need to download any software or make sure that your PC or laptop is powerful enough to run it. This also means you can use them from any device with an internet connection, which makes such solutions a great option for remote work, travel, or collaborations.
  2. They are cost-effective. Many online AI tools have free trials or free versions with basic features. What’s more, even their premium subscription is generally cheaper than hiring a professional designer or purchasing software. 
  3. They offer a variety of styles. Many such platforms support photo-realism, anime, digital painting, pixel art, and abstract styles.
  4. They are easily integrated with other tools. For instance, some AI image generators connect with design software like VistaCreate, Photoshop, or Figma or have built-in editing options. The others offer API access for developers to integrate AI-generated visuals into websites or apps.
  5. They can offer AI-assisted enhancements. This could be AI upscaling (improves resolution for print or high-quality work), AI-based editing (background removal, style transfer, object addition), and prompt suggestions for better creative results.

The best 3 online AI image generators to try

If you want to try generating AI visuals, you can start with one of these popular and affordable solutions. 

  1. Depositphotos AI Image Generator

This tool allows you to generate four high-quality images (from one prompt) suitable for commercial use. Proper commercial licensing is extremely important as not many similar tools allow you to use generated visuals for business purposes. 

The process of creating pictures using Depositphotos AI Image Generator is quite simple: you enter a prompt to receive the results in 2048×2048 resolution. There are various style and image orientation options to help you meet different branding or creative needs. The tool is a go-to solution for businesses and content creators who need royalty-free visuals.

  1. Midjourney

Midjourney is one of the most well-known online image-to-image and text-to-image AI generators. With its help, you can create highly detailed and artistic visuals and customize them by changing aspect ratio, style, weight, and level of creativity. 

This tool might not be the most straightforward to use as it works via Discord and has lots of various parameters. However, it’s still a great option, especially if you create concept art, fantasy, cyberpunk, and surreal imagery.

  1. Dream 

Dream, created by Wombo, is a free and easy-to-use online image generator. It supports multiple artistic styles, such as realistic, anime, fantasy, and watercolor, and can generate wallpapers, concept sketches, or social media visuals.

The tool is available in a web version and as a mobile app, allowing you to create images on the go right from your phone. It is a great option for those looking for a fun, free, and user-friendly AI generator for casual or artistic purposes.

To sum up 

AI image generators are a fast, cost-effective, and accessible way to create professional images without advanced design or illustration skills. These tools fit every need, allowing you to produce diverse pictures, from high-quality, realistic AI visuals to artistic and surreal creations. Try out the online platforms listed in this article to explore AI-powered creativity and unlock new possibilities.


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Joey Mazars

Contributor & AI Expert