Blurry Images is a problem that I believe everyone has encountered. Due to compression, screenshots, and other reasons, emojis and images become more and more blurry, gradually becoming like "mosaics".
Sometimes we only have low resolution, small size, and blurry N-handed images, and we can't find clear high-resolution original images. What should we do? This is where the "Image Enlargement Tool without Loss" comes in.
1. Zuo Tang#
- Address: https://picwish.cn/image-enlarger
Official website introduction: Using artificial intelligence deep learning technology, the enlarged image noise and jagged parts are supplemented to achieve high-definition picture quality. Special algorithms are used to process the lines, colors, and dots of the enlarged images, enhancing the image details. It not only has the function of image enlargement without loss, but also has functions such as image watermark removal, etc. It is available on Windows, macOS, iOS, and Android platforms.
And all services are completely free#
2. Bigjpg - AI Image Enlargement#
- Address: https://bigjpg.com/
- Description: File size ≤ 10MB, size ≤ 3000x3000px
The free version can enlarge images 2-4 times and choose different degrees of image denoising. After upgrading, the maximum enlargement is 16 times. It supports Windows, Mac, and Android client usage.
3. waifu2x#
- Address: https://waifu2x.udp.jp/
- Description: File size ≤ 5MB, denoised image ≤ 3000x3000px, enlarged image ≤ 1500x1500px
It is a famous open-source project on GitHub that uses deep convolutional neural networks to achieve image enlargement without loss. You can choose illustrations or photos, enlarge them 1-2 times, and support denoising processing.
You can also use the third-party open-source Windows client waifu2x-caffe, which supports batch processing, larger enlargement ratios, and more optimization options.
- Github: https://github.com/lltcggie/waifu2x-caffe
- Download: https://www.123pan.com/s/jezA-KDWPH.html
4. AI Image Enlarger#
- Address: https://imglarger.com/
- Description: Image ≤ 3MB, size ≤ 800×750, after logging in ≤ 2000×2000
Enlarge the image 2-4 times, automatically analyze the image noise and jagged edges, and restore details. 
5. Squirrel Anime Enhance (win)#
- Github: https://github.com/Justin62628/Squirrel-RIFE
- Download: https://www.123pan.com/s/jezA-0DWPH.html
Easy to use and supports videos, can interpolate frames for videos. With the advent of AI, the effect of image enlargement without loss has also become better and better. Currently, there are projects for AI image enlargement: waifu2x, Real-ESRGAN (produced by Tencent), and Real-CUGAN (produced by Ah B), which mainly focus on algorithms for anime/cartoon images and have very good effects. The effects of these three AI algorithms can be seen in the following image, where Real-CUGAN produced by Bilibili retains the texture details very well.
waifu2x: models cunet: generally used for anime super-resolution models photo: generally used for real photos models style anime: generally used for old anime
realCUGAN: Denoise version: mainly for images with a lot of noise; No-Denoise version: if the original image has little noise and is compressed well, but you want to increase the resolution/clarity/general enhancement and repair, it is recommended to use this version; Conservative version: if you are worried about losing texture, changing the art style, or enhancing colors, in short, worried that AI will leave heavy processing traces, it is recommended to use this version.
6. AI-Lossless-Zoomer (win)#
- Github: https://github.com/X-Lucifer/AI-Lossless-Zoomer
- Download: https://www.123pan.com/s/jezA-8DWPH.html
AI-Lossless-Zoomer is a Windows image enlargement software that is open source on GitHub. It uses the image super-resolution model (Real-ESRGAN) provided by Tencent ARC Lab to improve the image resolution effectively.
It has good enlargement effects on both real photos and anime images, illustrations, emojis, etc.
- Function description:
- Supports multi-threaded processing
- Supports batch image processing
- Supports setting options
- Supports custom output format and custom output path
- Supports AI engine selection
- Supports batch task cleanup