How to enlarge low resolution images without losing quality online for free?

How to enlarge low resolution images without losing quality online for free?

Making small photos enlargement without getting fuzzy and pixelated could be a challenge. As we all know, enlarging a low-resolution image will cause

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Making small photos enlargement without getting fuzzy and pixelated could be a challenge. As we all know, enlarging a low-resolution image will cause resolution loss inevitably if you just increase its height and width. Just as the before and after photos below.

image before and after enlargement

You should take the number of pixels per inch into consideration to keep it in high quality. In previous post, we have discussed how to enlarge small images using photoshop and some third-party software. Now this article will walk you through the four best free online tools to enlarge low resolution images without losing quality.

1. Bigjpg

screenshot of Bigjpg

Bigjpg is a free online tool to help you enlarge photos conveniently. Simple and only three steps are required to get the enlarged photos. No need to sign up and no Email address required. This online tool comes from China and now it supports English, Chinese (Simplified) and Chinese (Traditional).

BigJpg has applied Deep Convolutional Neural Networks, the advanced image technology with trained cudnn model. With its robust engine, you can get enlarged images in high quality.

enlarge small image with bigjpg

2. Waifu2x

Waifu2x is a smart online tool that comes with powerful photos enlargement features. This is an open-source project and it has got more than 10100 stars and 1220 forks in Github. It supports 13 languages so it is available for web users to use this online tool in their native language.

screenshot of waifu2x

Compared with Bigjpg, Waifu2x has more user-friendly features. You can upload your low-resolution image by typing URL or from local hard disk. You can select the image style like Artwork or Photo to get better resulted image. If you think your image has noise, you can choose to use noise reduction for higher image quality.

The only missing thing is that it only supports upscaling the original images for 1.6x and 2x.

enlarge small image with waifu2x

3. Vector Magic

Vector Magic is another alternative method for you to enlarge a picture without losing the quality.  After its conversion process, this online tool will vectorize the original image and save it as SVG, EPS or PDF format. You can enlarge these scalable vector graphics while keeping their perfect quality.

Before downloading the results, you have two options to choose. One is “Fill Only Result”, the most used output mode with all shapes are filled. The other is “Stroke + Fill Result”, where all shapes are stroked and then in a second layer they are all filled.

enlarge small image with vectormagic

4. Photoenlarge

screenshoit of photoenlarger

Photoenlarger is another online tool which is capable of enlarging smaller images for free. Follow its step-by-step tutorial, select the desired image as well as the enlargement factor. Then click the “Enlarge!” button. Four different results will show up running on different enlargement algorithms. You can choose any of them to download.

enlarge small image with photoenlarger

Comparison on these four online tools.

Items Bigjpg Waifu2x Photoenlarger Vector Magic
Compatibility Support most web browsers Support most web browsers Support most web browsers Support most web browsers
Batch Mode Support uploading multiple images Only support upload one image file Only support upload one image file Only support upload one image file
Imported images format Support PNG / JPG / BMP /GIF Support PNG / JPG / BMP /GIF Support PNG / JPG / BMP /GIF Support PNG / JPG / BMP /GIF
Noise Reduction Support noise reduction Support noise reduction None None
Upscaling Only support upscaling 2x, 4x, 8x and 16x Only support upscaling 1.6x and 2x. Supporting selecting enlargement factor freely None
Image quality High High Medium High
No limitation? No. Need sign up to remove restrictions. Yes. 100% free. Yes. 100% free. No. Charge fee for downloading.

In conclusion.

After reading this post, I believe there will no longer be an issue for you to enlarge photos or jpeg images online for free. Choose one of them depends on your needs. If you have any more recommendation or questions, feel free to left your comments. In addition, you can use Photoshop or some offline software to enlarge your small photos.

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