5 Best Stable Diffusion Upscalers to Enlarge AI Image Size

Liam Miller
Jun 09, 2023 / Updated by Liam Miller to AI Tools

While many AI tools are emerging to generate pictures in seconds, it is essential to have an upscaling app to enlarge AI photos. This is the job of the Stable Diffusion Upscaler, as it is capable of upscaling the image resolution up to quadruple percent. To see more of its best features, this article will discuss the AI tool and other alternatives to enlarge pictures for printing, eCommerce, and other digital purposes.

Part 1: What Is Stable Diffusion AI Tool

Stable.AI is the company behind many powerful tools, including Stable Diffusion, that gained popularity among users. Recently, the developers announced a new Artificial Intelligence upscaling tool, allowing to increase the size of the generated pictures from the website. It guarantees not comprising the sharpness with a fast-generating speed. It surpasses the traditional algorithms that use only pixel values of the photo, creating a corrupted and distorted result. Moreover, these traditional tools must have the functions to fill in the missing information precisely.

Stable Diffusion Upscaler is trained with vast data, generating the best-quality pictures. With its knowledge of real-world degradation, the upscaler pays more attention to recovering the image's original data, with the algorithm to fill the missing information. Setting all its essential features aside, you should know that the tool takes time to upscale one photo, especially for incompatible devices. Moreover, it only works for other heavily pixelated and blurry images. Instead, take a look at the recommended tools in the next part.

Part 2: Top 5 Best Stable Diffusion Upscalers

If you want to enhance resolution quickly, then it is best to use an alternative. This part shows the recommended AI tools that you can access online.

1. AnyRec Free Image Upscaler Online

AnyRec Image Upscaler

AnyRec Free Image Upscaler Online is a professional image upscaler offering free service. It has the latest AI technology, providing an auto-fix for blurry and distorted areas. It also has a Magnification level, which you can set to 200%, 400%, 600%, and 800%. After applying the enhancement, you can tell the difference from the original low-quality picture to the final output. You can use the built-in Zoom function to see the changes in detail for a more thorough inspection. Other key features include:

2. Model Card

Model Card

Developed by Robin Rombach and Patrick Esser, this Stable Diffusion alternative is a model associated with the upscaler. It is trained with over 1.25M steps on a 10M subset of LAION. It is suitable to use for images containing 2048x2048 and 512x512. However, installing Model Card must have additional software to improve performance.

3. LDSR

LDSR

Also known as Latent Diffusion, Super Resolution is first introduced with Stable Diffusion 1.4. It has an average way of exclusive photos, but many users like how it can be a valuable tool for other software, including Topaz Lab. The upscaler can massively boost the quality with the correct settings, even for low-resolution videos. Unfortunately, it has slow progress as a disadvantage, which is not recommended if you don’t like the slow-pace process.

4. ESRGAN 4x

ESRGAN

ESRGAN is famous for its outstanding results with any uploaded image type. Unlike LDSR, it is more advanced when it comes to upscaling images up to 4K. It is because it uses a deep convolutional neural network and GAN, or a generative adversarial network, to work on the best quality and resolution pictures.

5. R-ESRGAN 4x

R-ESRGAN

A better version of ESRGAN, which has a unique algorithm to restore AI-generated pictures and even real-world files. You can depixelate images with the help of this tool. The model has various degrees of distortion from the camera lens and digital compressions.

Part 3: FAQs about Stable Diffusion Upscaler

Conclusion

Stable Diffusion generates AI photos instantly, but it needs a Stable Diffusion upscaler to enlarge the size. You can print the pictures on a large canvas or a tarpaulin without stretching and distorting the details. But if you don’t like downloading software and using challenging tasks, you can use AnyRec Free AI Image Upscaler Online without paying or registering. Visit the official website and click the Add Photo to get started!

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