How to resize image

How to resize an image on a Windows 10 computer and adjust your photos to the perfect size for any situation

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It’s not unusual to resize an image. In fact, if you often work with images downloaded from the internet, you’ll probably find yourself resizing them a lot.

Luckily, the ability to resize images is built into nearly every photo application around. This includes two of the most popular, which are installed on every Windows 10 PC from the start: Photos, and Microsoft Paint.

Note, however, that there’s a difference between resizing an image to be smaller, and resizing it to be larger. Nearly every program, Photos and Paint included, can scale an image down without issue. However, if you use these programs to make an image larger, you might find that the image loses a lot of quality.

If you need to scale an image up (greater than 100% of the original size) without getting it pixelated and blurry, then you’ll need to use a program like Adobe Photoshop that includes a smart resizing feature.

But if you need to scale an image down, or you’re fine with losing image quality, here’s how to use Windows’ built-in image resizing tools.

Check out the products mentioned in this article:

How to resize an image on Windows using the Photos app

The Photos app should be the default photo viewer for nearly every image type in Windows.

1. Double-click the image file you want to resize to open it in Photos.

2. Once it’s opened, click the three dots in the top-right corner, then click «Resize.»

3. A small pop-up will appear, offering you three preset sizes for the picture. Pick one of them, or click «Define custom dimensions» at the bottom.

4. If you picked custom dimensions, a menu will appear that lets you set exactly how big you want the image to be. You can also choose how high quality the resized image will be — higher quality pictures look better, but have a bigger file size.

If «Maintain aspect ratio» is checked, then you only need to change either the height or width, and the other dimension will change automatically to match it.

Set your new dimensions, and then click «Save resized copy.»

How to resize an image on Windows using Microsoft Paint

1. Start Paint, which you can usually find in the Start menu. If it’s not there, you can type «Paint» in the Start button search box and click it when it appears in the search results.

2. Open the photo you want to resize by clicking «File,» then «Open,» and selecting the image from your computer’s files.

3. In the top menu bar’s «Home» tab, click «Resize.» The «Resize and Skew» window should appear.

4. Enter the size you want to resize the image to. You can set the size by percentage (i.e. «30 percent larger»), or click «Pixels» and enter the exact dimensions you want. As long as you keep «Maintain aspect ratio» checked, you only need to specify the horizontal or vertical dimension, and the other dimension will be set automatically.

5. Click «OK» to make the change.

6. Save the new version of your image by clicking «File» and then «Save As.»

Изменить размер изображения онлайн

Зачем изменять размер изображения?

При отображении или публикации изображения онлайн нам часто требуется изменить размер изображения чтобы оно полностью поместилось на экране средства просмотра или для изменения размера файла. В частности, может потребоваться уменьшить изображение при отправке в качестве вложения электронной почты или размещения на веб-сайте. Социальные платформы, такие как Facebook и Instagram с собственными ограничениями на размер изображения, также не являются исключением в этом отношении.

Теперь важно понимать, как изменить размер фотографии без потери качества. Технически, изменение размера изменяет информацию о пикселях. Например, когда ширина и высота изображения уменьшаются, любая избыточная информация о пикселях удаляється. Чтобы увеличить изображение, программа изменения размера изображения должна добавить новые пиксели на основе исходных пикселей, что приводит к размытому изображению. Таким образом, суть изменения размера изображения без потери качества состоит в том, чтобы сделать снимок с самым высоким разрешением и уменьшить его размер.

Изменяйте размер изображений онлайн с ResizePixel

Существует большое разнообразие программного обеспечения для редактирования изображений со всеми видами функций, такими как 3D-рендеринг, обработка изображений с помощью искусственного интеллекта и т. д. Почти все эти инструменты предлагают базовые функции редактирования изображений, включая изменение размера изображений. Однако современное программное обеспечение может быть дорогим и трудным в использовании из-за потребности в обучении. Для большинства пользователей, ищущих бесплатное и простое в использовании приложение для изменения размера фотографий онлайн, ResizePixel может быть решением.

Приложение ResizePixel предоставляет простой, но мощный сервис для изменения размера изображения в пикселях. Вы можете изменить размер PNG, JPG, GIF, WEBP, TIFF и BMP изображений с удобной опцией сохранения исходного соотношения сторон. Чтобы сделать файл изображения еще меньше, попробуйте изменить размер изображения в КБ/МБ. Измените размер изображения онлайн всего за несколько кликов, не устанавливая дополнительного программного обеспечения, и все в одном!

Как изменить размер изображения?

Бесплатно и безопасно

Resize image files online

Change the size of an image online, from anywhere, and completely for free.

Resize Image Online

How do I resize an image?

We’ve got the answer. To resize an image, upload it using the box above. You can upload from a cloud storage or link as well.

After uploading, choose the image file format the resized image. Then, you have two options to resize the image:

Using the actual pixels is very straightforward. DPI mainly changes the size when it comes to printing. Now, just click on “Convert” and that’s it!

Image resize only

This resizer is, naturally, for images – but all kinds of images. You can resize your raster images as well as vector graphics.

However, some formats will have to be converted into other image formats when resizing. Img2Go offers the following image formats:

Raster Image Formats:

BMP, GIF, JPG, PNG, TGA, TIFF, WBMP, WebP

Vector Image Formats:

Special Image Formats:

Resize image files – but why?

Image files come in all sizes. Especially photos or stock photography are usually more than 3,000 pixels on their largest side.

When uploading images to Facebook, Instagram, WordPress or other online platforms, however, the file size and actual size of an image are often an issue. These can be avoided by resizing the image in question.

Furthermore, e-mail attachments have a file size restriction. Change the actual size of the image to reduce the file size as well! Also, when downsizing, making an image smaller, the quality stays untouched.

Your files are safe

Any file you upload to Img2Go will be protected every step of the way. Our servers are encrypted, files are deleted regularly after 24 hours (or 10 downloads, whichever comes first), and no third-party will ever get access to your files.

Also, any copyright or other rights will always stay with you and never be transferred to us. More questions? Check out our Privacy Policy for even more information on file and data handling on Img2Go.

The size of an image

The size of an image can also be described as its dimension. Usually, it is given in pixels in the format width x height.

Using this information, you can easily resize an image. You don’t even need to put two values into the respective fields. If you specify a width only, our image resizer will automatically calculate the perfect height without changing the overall dimension of the image. This works when setting the height only as well, of course.

Resize image online

This image editing tool allows you to resize an image from any device that can be connected to the internet.

It doesn’t matter where the computer you are using is located, so you can use Img2Go from work or home or a friend’s house.

Next to all kinds of browsers, Img2Go can also be used on mobile devices such as smartphones and tablets since it is optimized for mobile usage. Img2Go is image editing “on the go”.

You need to convert and download at least 1 file to provide feedback

How to resize an image in HTML?

Learn different techniques to resize images in HTML, when you should avoid browser-side resizing, and the right way to manipulate & serve images on the web.

Manu Chaudhary

Read more posts by this author.

Manu Chaudhary

Table of contents

If your image doesn’t fit the layout, you can resize it in the HTML. One of the simplest ways to resize an image in the HTML is using the height and width attributes on the img tag. These values specify the height and width of the image element. The values are set in px i.e. CSS pixels.

For example, the original image is 640×960.

We can render it with a height of 500 pixels and a width of 400 pixels

If the image element’s required height and width don’t match the image’s actual dimensions, then the browser downscales (or upscale) the image. The exact algorithm used by the browser for scaling can vary and depends on the underlying hardware and OS.

There are a couple of downsides of client-side image resizing, mainly poor image quality and slower image rendering. To overcome this, you should serve already resized images from the server. You can use Thumbor or a free image CDN like ImageKit.io to resize images dynamically using URL parameters.

Resizing an image in CSS

You can also specify the height and width in CSS.

Preserving the aspect ratio while resizing images

Responsive image which adjusts based on available width

Alternatively, you can use the max-width property. By setting

the image will scale down if it has to, but never scale up to be larger than its original size.

How to resize & crop image to fit an element area?

So far, we have discussed how to resize an image by specifying height or width or both of them.

Resizing background image

background-size
By default, the background image is rendered at its original full size. You can override this by setting the height and width using the background-size CSS property. You can scale the image upward or downward as you wish.

Possible values of background-size :

It also has 2 special values contain and cover :

object-fit CSS property

You can use the object-fit CSS property on the img element to specify how the image should be resized & cropped to fit the container. Before this CSS property was introduced, we had to resort to using a background image.

You can use object-position to control the starting position of the image in case a cropped part of the image is being rendered.

Let’s understand these with examples.

object-fit:contains

The original aspect ratio of the image is same, but the image is resized so that it is fully visible. We have added 1px border around the image to showcase this.

object-fit:cover

The original aspect ratio is preserved but to cover the whole area image is clipped from the left and right side.

object-fit:fill

Image is forced to fit into a 200px wide container with height 300px, the original aspect ratio is not preserved.

object-fit:none

object-fit:scale-down

object-fit:cover and object-position:right

Downsides of client-side image resizing

There are certain downsides of client-side resizing that you should keep in mind.

1. Slow image rendering

Since the full-sized image is loaded anyway before resizing happens in the browser, it takes more time to finish downloading and finally rendering. This means that if you have a large, 1.5 megabyte, 1024×682 photograph that you are displaying at 400px in width, the whole 1.5-megabyte image is downloaded by the visitor before the browser resizes it down to 400px.

You can see this download time on the network panel, as shown in the screenshot below.

On the other hand, if you resize the image on the server using some program or an image CDN, then the browser doesn’t have to load a large amount of data and waste time decoding & rendering it.

Original image
https://ik.imagekit.io/ikmedia/women-dress-2.jpg

400px wide image with aspect ratio preserved
https://ik.imagekit.io/ikmedia/women-dress-2.jpg?tr=w-400

2. Poor image quality

The exact scaling algorithm used by the browser can vary, and its performance depends upon underlying hardware and OS. When a relatively bigger image is resized to fit a smaller container, the final image could be noticeably blurry.

There is a tradeoff between speed and quality. The final choice depends upon the browser. Firefox 3.0 and later versions use a bilinear resampling algorithm, which is tuned for high quality rather than speed. But this could vary.

You can use the image-rendering CSS property, which defines how the browser should render an image if it is scaled up or down from its original dimensions.

3. Bandwidth wastage

Since the full-sized image is being loaded anyway, it results in wastage of bandwidth, which could have been saved. Data transfer is not cheap. In addition to increasing your bandwidth bills, it also costs your users real money.

If you are using an image CDN, you can further reduce your bandwidth consumption by serving images in next-gen formats e.g. WebP or AVIF.

The user friendly dashboard will also show you how much bandwidth you have saved so far

See the actual savings in the ImageKit dashboard

4. Increased memory and processing requirements on client devices

Resizing large images to fit a smaller container is expensive and can be painful on low-end devices where both memory and processing power is limited. This slows down the whole web page and degrades the user experience.

Summary

When implementing web pages, images need to fit the layout perfectly. Here is what you need to remember to be able to implement responsive designs:

How to resize an image without losing quality online

If you’re new to editing digital images, resizing can be a frustrating experience. There are many different programs that often make exaggerated claims about their simplicity, quality, results, and more. Not to worry as you’ve come to the right place. This article will not only show you how to resize an image without losing quality by using multiple different programs that we’ve curated just for you, but it will also answer some other common questions about the resizing process.

How to Resize an Image with Resizing.app?

Resizing.app is the best image resizer that you can use online to adjust images for any purpose. Just follow the three simple steps below to instantly resize your image:

What are the most common reasons for image resizing?

Knowing how to manipulate digital images properly is an important tool for making your website stand out from the competition. Resizing images without losing their original quality is also a great way to make a good first impression on visitors, who are most often captivated by pictures above all else. Poorly resized images are obvious to the user, often appearing as blurred distortions of the real thing. Sloppy resizing can drive away your potential audience, diminishing your impact, or even causing you to lose visitors.

Another important reason behind the need to properly resize images is page speed. Photos and images arriving straight from a camera are very high in resolution. This means that there are many pixels, each taking its sweet time to load on your web browser. Reducing the resolution of your images before uploading them to your site is key to ensuring a smooth browsing experience. In this sense, page speed, as well as picture quality, are both equally important factors that you should keep into consideration when designing your site. Fortunately, resizing image pixels is not very complicated. It is easy to learn how to resize images without losing quality and this guide will show you how to do just that.

Is it possible to resize an image without losing its quality?

Yes! In fact, it is pretty easy to do so. But first, you need to understand the basics behind how to resize image pixels.

Bitmap is the most commonly used image type online. All JPEG and PNG files are also Bitmap files, which are made up thousands of tiny pixels. If you download a JPEG or PNG file, zoom in real close and you will see what I’m talking about. Thousands of tiny square pixels that have assigned colors and positions on an image, hence the name: Bitmap.

Speaking of image types, there are various common image file formats commonly used online. JPEG is one of them. Used to optimized web pages, JPEG’s are convenient given their small file sizes and quick loading speeds. PNG is a step up from JPEG, offering improved quality but at the cost of increased file sizes and reduced page speed. Finally, GIF’s are popular due to the ease in which they can be animated while maintaining a small file size. Together, these are the three most common online image file formats. With powerful programs like Photoshop, different image types can be easily converted into other formats. Keep common sense in mind as converting from a low-resolution format to a high-resolution format will not necessarily improve the quality of your picture.

Before we move on, it is important to understand that the term resizing is just a general term. When it comes to manipulating pixels there are actually two methods, resizing and resampling. Resizing is the most basic as it simply enlarges or decreases the size of the pixels to whatever scale is desired. Thus, its other name, scaling.

Resampling is slightly more complicated. Resampling is a tool that changes the number of pixels in the image itself. This is the most appropriate tool for resizing images for the web since page speed is so important, especially if you are using original photographs straight from your camera. If you decide the use a program capable of resampling, you are asking the program to analyze the image to decide which pixels to throw away or which to add. So if you’re looking to reduce image size without losing quality your best tool is resampling. Now let’s examine a few of the most popular tools for resizing images online.

The 3 best applications for resizing images without losing quality

There is an abundance of software tools available online for resizing images without losing quality. However, they range in flexibility, output quality, user-friendliness, and price. For smaller resizing projects, you can easily get away with using one of the many free applications. But for larger or more complicated projects, paid applications like Adobe Photoshop to come highly recommended.

Adobe Photoshop’s Perfect Resize

Adobe Photoshop is the most popular premium photo editing software available. Used by professional photographers, editors, and web designers the world over, no image resize guide would be complete without it.

While Photoshop is not a free tool, its offerings are well worth its relatively low cost. And while it can take some time to process the image resize pixels, Photoshop is still relatively easy to use despite its abundant offerings. The best Photoshop method to resize images without losing quality is through Perfect Resize. Perfect Resize automates the resampling process with extreme ease of use, giving you a perfect resized image with the same level of quality.

To use Perfect Resize, first, open the resize image in the application. Then click File, Automate, and select Perfect Resize. This opens the Perfect Resize window where you can either choose from a selection of preset resizing templates or input your own dimensions. After making your choice, simply click File, Apply and you’re done.

If you’re looking for free image resizing software, Gimp is one of the most popular choices. A free alternative to Adobe Photoshop, Gimp if useful for resizing images without losing quality. However, it should be noted that Gimp is limited in its application, and should be used only for modest resizing.

To resize an image with Gimp, simply open your image in the application. Go to Image, then Scale, where you can input your desired dimensions. Finally, under the Quality, choose Sinc as Interpolation and then click Scale. There you have it, an image resize with sustained quality.

Irfanview

Irfanview is a remarkable multimedia tool capable of much more than simple image resizing. While only available for Windows operating systems, Irfanview is a practical and speedy tool, thanks to the exceptionally small amount of system resources it takes to resize a large image file.

While Irfanview is convenient when used properly, its user interface is very dated and may be tricky to navigate for some new users. Finally, as freeware Irfanview is a wonderful application, but for those looking for professional ready image resizing, a more powerful program is necessary.

To resize an image with Irfanview, first open your image in the application then select Image, Resize/Resample. The resize pop up window will appear, where you can then enter your desired dimensions in Set Image Size. Then select Resample and choose Lanczos (slowest). Finally, don’t forget to select the option ‘Apply Sharpen After Resample’ as this will give you the best results.

Resize for success

You should now have the confidence to begin resizing images for yourself. While freeware applications are wonderful tools, they might not be powerful enough to maintain the quality of your images for larger resizes. For more important projects or more ambitious image resizing, consider using a paid tool like Photoshop.