If you've ever tried to enlarge a low-res screenshot and ended up with a blurry mess, you've probably looked for better tools. Bigjpg AI is one of the popular free options that keeps showing up. I tested it on 3 different image types. Let's check out how things went and whether it's worth your time.
Part 1. What Is Bigjpg & What Can It Do
Bigjpg is an AI image enlarger. You upload a picture, decide how much you want to enlarge it, and the tool uses deep learning to reconstruct details rather than just stretching the pixels, to make enlarged images look cleaner. It works especially well on anime and illustrations. Regular photos work too, though the results are not as impressive.
Bigjpg has been around for about 10 years. The official site is bigjpg.com. While it can work completely online, you can also download the Bigjpg app or desktop software from the website.
Key Features：
- Upscales images by 2x, 4x, 8x, or 16x. 8x and 16x require a paid plan.
- Separate models for artwork/anime and regular photos.
- Noise reduction options, including none, low, medium, high, and highest.
- Works in the browser, plus there’s a Bigjpg app for desktop and mobile.
- Paid plans unlock bigger files, faster processing, and higher scales.
- Supports common formats like JPG, PNG, and others.
Part 2. How to Use Bigjpg Step-by-Step
Using the web version on bigjpg.com is pretty simple.
Step 1Go to bigjpg.com and click Select Images, or drag and drop your image there. Your image will appear under the upload area. Click the Start button next to the thumbnail.
Step 2Choose the image type: Artwork (for anime, illustrations, line art) or Photo (for real-life pictures).
Step 3Pick the scale factor. 2x and 4x are free.
Step 4Select a noise reduction level. Low or Medium works fine for most cases. Higher settings can remove more noise but sometimes soften fine details.
Step 5Hit the OK button and wait. Free users share servers, so it can take a bit longer during busy times.
Step 6Download the result when it's done.
There's also a Bigjpg application for Windows, Mac, Android, and iOS. The workflow is similar once you open the app. Just note that we found some malware reports about the desktop installer in forums, so it's safer to stick with the web version.
Part 3. Is Bigjpg Usable? Our Real Test Result
I tested Bigjpg on three common types of images. Each of them was upscaled to 4 times the original size, and processed with a Low level of noise reduction. For the anime screenshot, I used the Anime model of Bigjpg. For the scenery and human portrait, I chose the Photo mode.
Anime-style image
This is where Bigjpg performs best. As you can see, it not only increased the image resolution but remarkably enhanced its quality as well. Grains were cleaned up, lines became sharp, colors held up, and the overall look stayed exactly the original style.
Real-life scenery photo
On the scenery photo, results were okay but not as strong as on anime. Trees and textures came out clean without losing quality, but there was no improvement, either. What had been blurry remained blurry. Some distant elements looked a bit flat. As an AI upscaler, it doesn't really win over traditional manual enlargement for landscape shots.
Human portrait
Just like with the scenery photo, it didn't do much good to the portrait quality. It preserved the texture of the hair well, but the natural skin texture became pixelated. The lighting was a bit oversharpened, making the skin look plastic. Tools specialized in photo restoration usually handle faces better than that.
Bigjpg Pros and Cons
- Pros
- Excellent results on anime, illustrations, and line art.
- Simple interface with no learning curve.
- Free tier that actually works for light use.
- Noise reduction and image-type modes that help a lot.
- Processing finishes in seconds if you have a stable Wi-Fi connection.
- Cons
- Photo and portrait results are only average compared to many other AI tools.
- Free enlargement is limited to 4x at most.
- The desktop app has drawn occasional security concerns in community discussions.
Verdict: Who Is Bigjpg Best for
Bigjpg is best for people who work with anime, digital illustrations, pixel art, or similar stylized images and just need a quick free or low-cost upscale now and then. If you only enlarge a few images a month and don't mind the free limits, it's a good pick. It's less helpful if you do a lot of real photography, need unlimited processing, or want the absolute best results on human faces and complex photos.
Part 4. Best Bigjpg Alternatives
If Bigjpg doesn't quite fit your needs, here are two solid Bigjpg alternative options that cover different strengths.
AVAide Image Upscaler
AVAide Image Upscaler is also an online tool. It tends to do better on real photos and portraits, offering extra quality enhancement beyond pure enlargement. It complements Bigjpg well if you switch between anime work and photography. Use Bigjpg for the stylized stuff and AVAide when the image is a real photo or face.
The workflow is as simple as Bigjpg: upload a photo to the workspace, select a target size, and let it work. Plus, the paid plan supports one-click batch upscaling.
Upscayl
Upscayl is free, open-source, and runs completely offline on your computer. No uploads, no monthly limits, no waiting in queues. It offers various models for different use cases, some focused on sharpness, some on true-to-life, and some on digital art. Quality is competitive on both anime and photos, and you can process as many images as you want.
When you don't want to send images to an external server or when the free Bigjpg quota runs out, you might want to try Upscayl.
Bigjpg picture enlarger is a useful free tool for upscaling anime and illustration. For better photo results or offline/unlimited use, AVAide Image Upscaler and Upscayl are the stronger Bigjpg alternatives.
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