How the Best AI Resolution Enhancers Worked on My Test Images

Do you have an image that’s too small and low quality? Then, you need an AI image resolution enhancer.

There may be some confusion around this topic because there’s some overlap between tools that can get you to similar results.

An AI image enhancer often increases the resolution. However, they may keep the same resolution and only enhance the quality of your photo by increasing contrast, fixing color casts, removing noise, sharpening details, etc.

Every tool interprets the word “enhancing” in a different way. Then, there are the AI image upscalers. These tools are meant to increase the resolution of your image.

In other words, they make it bigger. However, they may or may not enhance the quality.

In this article, I’ll tell you about all the tools I’ve tried that do both tasks regardless of how they’re labeled. I’m calling them AI image resolution enhancers.

What is the Best AI Resolution Enhancer in 2025?

Deep Image

Deep Image is my favourite AI resolution-enhancing tool, and it’s available online. It’s browser-based so you can use it on any computer and even on your phone.

The first time I checked deep-image.ai, I was a bit put off, to be honest, due to their cookie banner not working. I think this is only an issue for users in the EU, though.

Anyway, I’m happy that the website quickly changed my mind. They have a clear and comprehensive FAQ section that includes information like “How long do you keep my images?” and other privacy concerns as well as other practical things.

The pricing scheme is straightforward and versatile, plus they clearly indicate that you can try the AI tools five times for free, but the images will be watermarked.

I’ve tried many AI platforms online, and not all (almost none of them) tell you the trial’s limitations upfront. So, I appreciated their transparency.

I signed up for the free trial as you can’t use the tool without it. On the plus side, you can create an account or use a social sign-in using Facebook or Google.

I got ten credits and each time I used it, it deducted one. So, I got twice as many free trials as I was expecting. That was a very nice surprise, but I don’t know if it’s a temporary promo. So, it may be different for you.

One of the things that made Deep Image my favourite AI image resolution enhancer is that you can choose between AutoEnhance and the AI Enhancer PRO.

The first one is a one-click solution where the AI analyses your photo and takes the steps it considers necessary to improve it.

The AutoEnhance PRO, meanwhile, gives you control over specific features. Don’t worry – you don’t need any previous knowledge or technical skills to use it.

In AutoEnhance PRO, you can enable which features you want to use depending on your image. You can turn on the Enhance Face Details for portraits or Reduce Noise for images taken in low light, etc.

It also has features that you wouldn’t commonly find in other AI enhancers, such as Framing or Change Background. These are mostly designed for e-commerce images. It has over 80 preset backgrounds to fit any product.

The upscale picture increases the resolution up to 4x, and you can set custom dimensions if you want. There’s also a Generative upscale feature. Plus, you can use the Advance feature to choose the output file format.

Each tool has a short explanation if you hover over the “i” next to it, or you can scroll down for a longer explanation of how to use the tool. Each tool has different options to customize it using sliders or checkboxes.

You can upload a file from your computer, but it also connects to cloud storage services – which I found quite handy. It’s also possible to enhance more than one at a time.

Since the first try, I was very happy with the result. Plus, it only deducted one of my credits even if I chose multiple features from the AI Enhance PRO tool.

The results, as warned, have a watermark. Still, you can easily examine the outcome by using the full-screen view and zoom features. You can also easily rate the result.

Another cool thing about Deep Image is that you can start working on the next picture while the AI keeps working in the background on the one you’ve already launched. This is great because it’s not as fast as other AI resolution enhancers.

I tried the same images on AutoEnhance and on AI Enhance PRO. The results were obviously different, but they were both excellent.

In my experience, it works just as well on humans, animals, and objects.

If you want to download your images without a watermark or keep using Deep Image, you can buy credits or get a subscription.

Monthly and annual payments are available if you choose the membership. Plus, the unused credits rollover for up to three months.

The credit packages start at US$7.99, and the memberships at US$9.00. You’ll get better value for money with the subscription plans, but credits are better if you don’t want a long-term commitment.

Deep Image also has a simple AI upscale and many other AI tools – including generative ones.

• More: Which AI Tools Are Best for Fixing Blurry Photos?

Remini

Remini is available on any browser, but you can also download the app for iPhone and Android.

You can use the AI photo and video enhancer for free without registering. The first time you use it, you’ll see a mini tutorial – you can skip it if you want. The tool is not difficult to use.

The resulting image has watermarks, but you can get a bigger view and use the zoom to review the enhancement. If you want to download it, though, you need to subscribe.

I don’t like that I can’t choose the upscale factor or final size I want for my enhanced image.

In my tests, I used pictures that were 580 x 870 pixels. The enhanced versions were 1364 x 2048. This means that the upscaling factor it applied was approximately 2.35x.

However, there is some customization available. You can start by choosing which model to use for the Face Enhancement. Currently there’s a Base and a V1 option. Plus, there’s a beautify feature with some options for you to try, from Natural to Glam.

You can also choose the intensity of the background blur and use the Color Correction tool to remove a color cast or tint your picture to adjust the color profile.

It’s possible to experiment with different combinations of these settings and keep generating enhanced versions of your photo for free. As long as you don’t try to download, you won’t have to register or pay.

You’ll also see on the right side that it’s possible to upload more pictures to do batch processing. However, this feature is available only with a Professional membership.

I found the results to be quite good on all subjects. The processing is fairly fast, especially compared to Deep Image.

Something I like about Remini is that it has flexible and affordable subscription plans. Currently there’s an offer for 7 days at US$0.99 on any subscription plan.

Usually, the starting price is US$6.99 for a weekly personal plan and US$9.99 for a professional one. If you subscribe to a monthly or yearly plan, you’ll get better value for money.

LetsEnhance.io

I’ve already talked about LetsEnhance.io in my article about AI image-enhancer websites. Since it’s a great tool and it also upscales, I’ve decided to include it here.

The interface isn’t as user-friendly as others. However, it’s still very easy to use, and it allows multiple customizations. On the right side, you’ll find all your options.

On the top panel, you’ll find Upscale & Enhance. Enable this feature to see the options. Despite the evocative names, the options have to do with the intensity of the enhancement. You can hover over the “i” on each one to read the description.

The choice depends on how bad the quality of the original is and what result you’re expecting to get.

If you want the most potent enhancement, even if it means super smooth skin and other highly processed effects, use Magic.

For something more natural, go for Balance – that’s the one I use most of the time. You can also try Legacy, which was formerly named Photo.

The upscale tool also has custom features. You can set it to auto and it will increase the resolution by 2x. However, you can go to Scale and choose up to 16x. Alternatively, you can input a custom size on the Width & Size tab.

I like that even before processing, you can see the original resolution, the final one, and what size it would represent if you printed it.

If you click on Presets in the right panel, you can choose the printing preset to optimize your image for top quality without choosing each setting.

There are other enhancement features, such as tone and color enhancement. However, the most unique is Lighting AI, which is meant to balance tones and fix any lighting issues in your photo.

Unlike Remini, you can’t see a preview of the final image or the changes you make when you move the settings. Instead, you need to choose blindly and launch the processing. This costs you credits.

If you want to try a different combination of settings, then you need to launch it again and use another credit. You can also use this tool to remove the background on a photo.

In any case, once you start processing a photo, it takes a little to deliver the enhanced version. This is the slowest service from the bunch. This can be a problem if you’re working on many pictures. However, you can start working on the next one while the first is still running.

Once the picture is ready, LetsEnhance has a great zoom tool to review the results. You can easily download or share from the results page.

When you sign up, you get 10 credits to try the tool. This allows you to use it and get the results without watermarks. The download is also watermark-free. This is something I really appreciate.

In my experience, the results are great quality regardless of the type of subject.

You can buy credits with the ‘Pay as you go’ option, or you can subscribe to one of the available plans – there are three regular and three for business.

• More: Testing AI Photo Restorers

Aiarty

The previous options I’ve shared are browser-based and apps. However, you might be looking for software you can use locally on your computer. Or perhaps you don’t want to be dealing with credits and subscriptions and prefer a one-off purchase.

Then, Aiarty Image Enhancer is for you.

I chose this software because it’s dedicated to AI upscaling and enhancing. So, it’s straightforward and easy to use, unlike full photo editors that may get you to the same point but have a steeper learning curve.

Aiarty is as simple as any of the browser solutions I’ve talked about before. Simply upload your image, choose the settings you want regarding the output size, AI model, and face restoration and start processing.

The upscaling tool allows you to enlarge up to 8x or use its presets up to 8K resolution. You can also input a custom size. The Windows version supports up to 32,000 pixels, while the Mac version only goes as far as 16,000.

Depending on the AI model you choose, the enhancement will be different. Generally speaking, it takes care of sharpening, clarity, and denoise. However, the intensity varies in each model. There’s a brief guide that explains how each one works so you can choose.

In any case, you can simply try all of them and see which result looks best. After all, you’re not spending credits on each trial – when you buy the license, you get unlimited use.

An extra enhancement tool you have is the Face restoration. Needless to say, this is only helpful for portraits.

I find that it really makes a difference, so I suggest you enable it whenever you’re working on a photo where there are people’s faces.

If the images you have were generated using AI, you have the possibility to keep the image prompt embedded in the metadata.

Another tool available is the Text tool. I’m not exactly sure why they added it or why it would be useful to have on an AI resolution enhancer software, but there it is if you need it.

I found that Aiarty performed really well on all types of subjects. It was a bit slow when processing, but that also depends on how powerful your computer is.

There’s a possibility to choose which hardware to use. The developers recommend using the GPU to speed up the process and have everything running smoothly.

The results can be side-by-side or with a split view. It’s also easy to zoom in and navigate the image.

You can buy the Standard License or the Lifetime License. They’re basically identical, except that the Lifetime License includes all further updates, while the Standard one only covers one year.

Since AI technology is evolving so quickly, I advise you to buy the Lifetime License – especially because the price difference isn’t that much.

You can download a fully functional free trial. You won’t have the batch export feature; individual export will create a watermark on the image. However, you can explore its potential and decide whether it’s something you want to invest in or not.

Alternatively, you can buy the license with a 30-day money-back guarantee. You can get a discount if you’re a non-profit organization or if you need it for educational purposes.

• More: Best AI Object Removers

Topaz Photo AI 

If you like the idea of having an AI resolution enhancer on your computer but Aiarty is a bit basic for you, then I recommend Topaz Photo AI.

Topaz is famous for its AI upscaler, Gigapixel. However, Photo AI includes enhancing and upscaling tools, so I’ve included it on this list.

The interface is clean and intuitive. So, even if it’s packed with customizable features, you can jump right in and easily use it for the first time.

On the right side, you’ll see a working panel. First of all, you’ll have a crop tool. This is something that’s been missing from all the other AI resolution enhancers on the list.

Then, you can click on the Add Enhancement button to start working on your image. Choose any of the available features to start enhancing your photo.

If you’re not sure where to start, don’t worry. Photo AI analyses your photo and offers suggestions on what needs to be done. It’s up to you if you want to apply them or if you want to go your own way.

The available tools include Denoise, Recover Faces, Sharpen, Upscale, Adjust Lighting, Balance Color, and Preserve Text. There’s also a generative AI tool for object removal.

I really enjoy that each tool can be used and customized separately. This gives you full control over the final result. You can use the same tool multiple times, targeting different areas of your picture.

It’s also possible to toggle each enhancement on and off to see its effect. If there’s something you don’t like, simply click the “X” to remove it.

Each tool has different settings you can customize. Some control the intensity of the effect; others allow you to mask specific areas.

For example, you can Denoise only the background if you don’t want to lose details on the subject, or you can only sharpen the subject if you want a blurred background.

Another feature I found extremely useful is that you can save your process as a preset. This way, you can apply the same resolution enhancement to multiple images.

The upscaling tool goes up to 4x. I know it’s not much compared to Topaz Gigapixel, but consider that here you have all the enhancement tools.

As a solution, you could enhance and upscale the image at 4x and save it. Then, upload it again and do another 4x upscaling.

That would be the only downside, for the rest, it does a wonderful job. Unlike the other tools featured here, Photo AI saves your progress. This way, you can pick up your work at any time, and it also saves you in case the program or your computer crashes.

As you can see, this is a much more robust software. Therefore, it’s heavier and requires a more powerful computer to run smoothly. However, some tools allow for cloud rendering, which is great.

Also, it’s more expensive than the others. You can download a free demo to try the software. You’ll be asked to provide your email, and once it’s downloaded, you’ll have to create an account to start the trial.

The trial is fully functional, but you won’t be able to export the enhanced photos.

Alternatively, you can buy a license with a 30-day money-back guarantee. Photo AI is also available as a plug-in for Photoshop and Lightroom.

What is resolution?

The resolution of an image may refer to its dimensions in pixels, but it also refers to the pixel density. This is why it can be a tricky concept.

The pixel dimension of an image may be 640 px (width) x 480 px (height). This is literally how many pixels it has on its longest and shortest side. In this case, the image has a low resolution, as 640 x 480 isn’t a big image.

This is where the pixel density comes in. If you print this image at 300 dpi – which is recommended – you’ll get a photo that’s 2.13″ x 1.60″. If you were to print it on 8″ x 10″ paper, you’d have a ‘pixelated’ image.

It would look very low quality even if the photo was perfectly exposed and had good quality in its original size.

That’s why the term resolution got tangled up with the quality. However, a good quality picture can simply be small and, therefore, be low resolution. It would lose quality only when enlarged.

On the other side of the spectrum, you could have a high-resolution image of 4000 x 3000 px. This is big enough to print a photo of 13″ x 10″ at 300 dpi.

However, if the photo is blurry, has digital noise, and is incorrectly exposed, this would make it a low-quality picture, even if it’s at high resolution.

As you can see, to have a good print, you need both an AI enhancer for the quality and an AI upscaler for the resolution. In this article, I commented on the best tools I found that had both features in a single tool and allowed for some degree of customization.

I hope this makes things clearer and that you found my experiences with these AI resolution enhancers useful.

• More: How to Choose Photo Size & Resolution (for Print or Online)

Frequently Asked Questions about AI Resolution Enhancers

What is the best AI tool to increase image resolution?

The best AI tool to increase image resolution is an upscaler. However, increasing the resolution without preserving the original details may result in a high-resolution image with bad quality. That’s why an AI resolution enhancer is best.

How do I make an AI image high resolution?

To make an AI image high resolution, you need to use an AI upscaler or an AI resolution enhancer.

Does an AI image generator have high resolution?

Each AI image generator offers different resolutions. In most cases, you’ll need to use the paid version of the AI image generator to access the highest resolution possible. In any case, you can always increase the resolution of an AI-generated image using an upscaler.