Image size in Photoshop. Resizing an Image in Photoshop

Many people still don’t know how to change the file size in the program. Adobe Photoshop. Let's take a closer look at this simple editing process and find out how to quickly change the file resolution and its physical (virtual) length and width.

First, let's create a new document to make it clearer. To do this, go to the menu item File-New, or press the keys CTRL + N.

After this, we should have a dialog box with a choice of parameters. Among them you will find such as the choice of measurements (pixels, inches, centimeters, etc.), the size of the width and height of the new document, resolution, color model, etc.

Optimal for file editing (printing) are: 300 pixels per inch (resolution), width and height - at your discretion (original photo size), color model - RGB, image background - either transparent or white, etc.

When changing the width and height of an image, look at the resulting photo size, since when editing, the main thing is not quantity, but quality. The result of your actions will also be influenced by the bit depth of the document - these are 8, 16, 32 bits. I recommend starting with 8 – you can’t go wrong!

As for the background of the image, it is, of course, better to use a transparent one. But you can leave the white one, since it is more convenient to work with, and you can always remove it later. Pay attention to the button Save Preset– using this option, you can save your size and use it in the future (re-editing a similar photo).

Click OK and look at the result. I set the background to transparent and the width and height dimensions to be 800 by 600 pixels, respectively. In addition, I indicated the document resolution - it is 300 pixels per inch. To view the dimensions, you can press the keys on the keyboard ALT + CTRL + I.

Now, when we change the size of the photo (for example, reducing it to 400 pixels wide), we must choose whether to change the proportions of the document. The paperclip icon next to the size values is responsible for these settings. If you remove it, you can change the document beyond recognition.

If you enlarge the photo, be sure to keep an eye on its size, since the Photoshop program may simply not process the new format due to low memory.

I changed the document properties and set the values to 300 by 300 pixels, that is, it turned out to be a square (not Malevich).

Let's take a real photo and edit it in Photoshop. Now let's go to the menu Image-Image Size.

Let's try to fit the image to the format of a standard A4 sheet. To do this, let's go to the image adjustment selection menu and select the format we are interested in.

You need to pay attention to the fact that the dimensions of the photo can also be changed as a percentage, which is very convenient when creating actions. For example, if we put a value of 50% in the width field and remove the aspect ratio, we will get an interesting effect.

Using Photoshop, you can easily reduce or increase the size of an image. Moreover, this can be done in different ways depending on what result you are striving for.

Before we start looking at the methods, first a little theory.

Firstly, what is reducing or increasing the size of an image? First of all, this concept should be understood as reducing/increasing the resolution of a picture, that is, its length and width and, accordingly, the number of pixels that make up any raster image. .

Secondly, what happens to the quality of the picture after resizing it?

During the process of reduction, there is a loss of pixels, but the quality as a whole does not suffer, it remains quite clear.
During the enlargement process, Photoshop stretches the pixels and draws them in accordance with its algorithm. Therefore, when enlarging, the picture quality always suffers. The higher the magnification, the more clearly the irreversible loss of quality is visible.

A similar issue was discussed in the lesson related to changing the layer size,

A clear example of how image quality changes:

In this article, we’ll look at 4 ways to change the size of a picture in Photoshop and look at when and which method is best to use.

Method 1 - Image Size Dialog Box

This is the classic and most universal way. It is suitable in most cases, especially when you already know to what size you should reduce and enlarge the image size.

Open the image in Photoshop.

Open dialog box Image - Image Size(or key combination - Alt+Ctrl+I). The following window will appear:

Pay attention to the fields immediately Width And Height. The values that will be indicated there are the current dimensions of the image. By default they are measured in pixels.

If you initially know to what size you need to resize the image, then enter these values in the above fields.

Proportions

If there is no checkmark in the window settings Maintain proportions, then you can enter any values in the length and width fields. But you risk that the picture will be stretched vertically or horizontally. It is very easy to make a mistake and choose the wrong proportions.

Example without maintaining proportions

Example with maintaining proportions

Method 2 - Resizing using Transformation

Transforming an image is a cool method that definitely needs to be added to your Photoshop knowledge base. This method is good in two cases:

reduce or increase the size of the entire image;
Reduce or enlarge the inserted image in Photoshop.

Size details for each case.

How to reduce or increase the size of an entire image

Step 1

Open the picture. Select a team Editing - Free Transform or press the key combination Ctrl + T.

Note

If this command is not active (grayed out), then your background layer is locked to change. This is indicated by a padlock icon directly on the layer.

To unlock the background layer, double-click on it. A window will appear New Layer, Press OK.

Step 2

A frame will appear around the image. There are markers in the corners and on each side that you need to pull to make the image smaller or larger.

After resizing, click on the checkmark at the top of the options bar. There is a bug in Photoshop CS6 and this checkbox is not visible. If you also don’t see it, then press the Enter button to accept the changes or Esc to cancel.

Step 3.1 Case with magnification

If you enlarged the picture in this way, then, as you can see, part of it became hidden, it seemed to not fit into the size in which it was opened. On the one hand, this is also not bad and can also be used in some cases.

But if you insist on showing the entire image, select the command Image - Show all.

Step 3.2 Case when decreasing

When you zoom out, you'll see a checkerboard background. This is emptiness, transparency. It will disappear when you save the image. But it would be correct to cut off the void in order to ultimately see what the final size of the picture is.

To cut off the void, select the Image command - Trimming.

In order not to disturb the proportions of the image in this method, when you drag the frame markers, simultaneously hold down the key Shift.

How to reduce or enlarge an inserted image in Photoshop

In any case, take the case described above into account. Namely, the ability to use a command Free transformation(Ctrl+T). This technique will be needed to carry out such a common operation, as reducing or enlarging an inserted picture, item, object(call it what you want).

So, a familiar situation: you inserted another picture into your main image in Photoshop, but it did not fit in size.

Select this image and use the transform command. Now, as described above, pull the markers in the desired direction.

Method 3 - Canvas Size

Not the most popular method, but nevertheless we will also consider it - the command.

The peculiarity of this method is that we change the size of the image resolution, while the picture itself does not change in any way. Photoshop simply cuts off part of the image (if we are talking about reduction), or adds a background color (if we are talking about enlargement).

That is, let’s say your picture is 700x700 pixels. Through Image - Canvas Size you set the size to 500x500. As a result, Photoshop cuts off the extra 200 pixels in height and width. In the settings, you can specify where it cuts from: it is either evenly on all sides, or you can select a specific side.

How to reduce image size without losing quality

We looked at 4 ways to reduce image size. Of these, two methods: Canvas Size and Crop are not associated with loss of quality. In fact (width and height) the pictures become smaller, but the content itself remains the same size. To achieve this, you need to sacrifice part of the picture, in other words, simply crop it to the desired size. For more details on how to do this, see the text above.

How to make a cropped image smaller in Photoshop

To reduce the size of a cut-out object in Photoshop, you need to be able to: cut out objects, manipulate the cut-out area (including reducing it).

Read about how to cut out objects in other articles. Let's look at reduction in more detail.

In this situation, you will also need to know how to use the command Free transformation.

When the object is cut out, you need to form a shape around it. After that, apply a transformation and, according to the instructions above, drag the handles in the direction of making this object smaller.

In any case, when reducing the cut fragment in the free space, Photoshop will automatically add a background color. Therefore, if you have a simple case, then take care first and select the same background color that surrounds the object to be reduced. To do this, get a color sample using and .

If you notice an error in the text, select it and press Ctrl + Enter. Thank you!

Those who begin to master the Photoshop graphic editor are at first at a loss in front of its rich functionality. One of the unclear points is working with layers. In this article we will take a closer look at how to change the size of a layer in Photoshop correctly.

Why does the layer size change?

The main reason why you might need to change the area of a layer is because there is a conflict between the main background image and the additional one that is placed on a separate layer above it. The insert may be larger or smaller than the background, so in order for the collage to look harmonious, it needs to be enlarged or reduced to fit into the overall picture.

Let's make a reservation that when explaining to the reader how to change the size of a layer in Photoshop, we are using formal, abstract formulation. All the manipulations we presented will not affect its area in any way; they will only affect the visible part - the one that we need to fit into the picture. Therefore, it would be more correct to say that we are changing the size of the visible content of the layer.

How to change layer size in Photoshop?

Let's look at the whole process step by step:

On the right side of the screen, select the desired one in the layers palette - left-click (LMB) on it.
On the top line, click "Editing" and select "Free Transform" from the drop-down menu.
You will see that the layer is surrounded by a frame with markers. They will help us change its apparent size.
Working with markers (small squares on the frame) begins by hovering the cursor over one of them and holding down the left mouse button.
How to change layer size in Photoshop? Pay attention to the markers on the sides of the frame: pull one of them towards the center of the document - the visible image of the layer from this side will decrease, and from the center it will increase.
Markers on the corners of the visible layer image: by dragging them towards or away from the center of the image, you will immediately change the size of the two sides adjacent to that corner.
If you need to set certain parameters for width and length, then enter them in the “W” and “D” fields respectively. You most likely have percentages set here by default. Units of measurement (pixels, centimeters, millimeters) can be selected by right-clicking (RMB) on any of these windows.
To save your changes, click on Enter. A checkmark on the toolbar will help you save them.
Cancel changes - click on the crossed out circle, which is visible next to the check mark on the same toolbar.

How to change layer size in Photoshop: hotkeys

Let’s consider “hot” combinations that significantly speed things up:

Ctrl+T - call the "Free Transform" tool.
Ctrl + "-"/"+" - decrease/increase the scale of the layer being changed.
How to change the size of a layer in Photoshop while maintaining the proportions? Hold Shift while working with markers - the sides of the image will increase/decrease proportionally.
To make the sides of the image change proportionally to each other, you can click on the "Chain Links" icon on the desktop.
Holding Alt while working with markers - the length and width will change relative to the center of the image.
Holding Shift and Alt when working with markers - the sides of the visible image will change both proportionally to each other and relative to the center of the image.
Esc - quick reset of changes made.

Using the navigator

When analyzing how to change the size of a layer in Photoshop CS6 and other versions (by the way, this operation is performed the same in all variations of the graphic editor), it is important to note such a point as working with changing a layer that is too large. A sign of it is that after calling the “Free Transform” tab, you do not see either a frame or node markers.

How to resize a picture in Photoshop in this case? To make it possible to work with a document, you just need to reduce its scale to such limits that the free transformation tools are visible. To do this, go to "Navigator" and move the scale slider to the desired position. Save changes and return to transformation.

Maintaining quality

Before using Photoshop, please note that the quality of the layer being increased in size may noticeably suffer. To prevent this from happening, we recommend converting it into a smart object before starting transformations:

Right-click on the desired layer.
From the list that appears, select "Convert to Smart Object".
Perform all the necessary transformations according to the diagrams presented in the subheadings above, save the changes.
RMB again on the already modified layer - this time select "Rasterize..."

As a result of these actions, all image data is copied into smart containers. Therefore, you can compress or enlarge the layer as much as possible - if necessary, the graphic editor will take information from there in order to qualitatively restore the image if it is enlarged. However, we advise you to add photos or pictures to the layers that do not differ much in resolution from the background - this way they will look much more natural.

Resizing the background layer

Speaking about how to change the size of a layer in Photoshop, it is important to add that the Free Transform tool is suitable for all variety of layers, except for the only one - the background one. You will recognize it in the palette by its characteristic “locked lock” icon. If you haven't changed the order of the layers, it will be at the very bottom.

You can change its length and width in two ways:

Click on “Image” and select “Image Size” from the menu that appears. Enter the required parameters for the layer length and width.
Unlock the background. To do this, double-click on it and click “OK” in the pop-up window. If everything is done correctly, the “lock” will disappear, and you can work with the background as with a regular layer - changing it using free transformation.

Resizing multiple layers at once

Let's look at how to change the layer size in Photoshop in this case:

If the necessary layers are located next to each other, select them with LMB while holding Shift. Another option: while holding your finger on this key, click LMB on the top layer, and then on the bottom layer, or vice versa. Both themselves and the layers between them will be highlighted.
If the necessary layers are located differently in the palette, hold down Ctrl and select each of them in turn.
Another way is to place all the necessary layers in a group and close it (the arrow next to the group name will “look” with its sharp side to the side, and not down).
After one of the listed manipulations, all you have to do is call “Free Transform” and resize according to the well-established scheme presented above.

We have looked at all the ways to change the size of a layer in Photoshop of all versions using hot keys and without them, for a regular layer, a background and a group of several layers. A little practice - and you will perform this simple operation automatically, without thinking about the peculiarities of its execution. Good luck in your creativity and mastering this wonderful graphic editor!

The size of the visible layer fragment of any Photoshop graphic document is the same as the size of the entire document canvas in question. Therefore, you can change it simply by changing the size of the source document. But Photoshop still has standard tools for editing the fragment size. In order to learn how to change the size of a fragment yourself, you will need to open a file in Photoshop that contains several fragments.

Instructions

You can change the scale of any object in the file using the Free Transform command, it is located in the Edit menu, or you can use the Scale option, which can be found in the same menu in the Transform list. Having selected one of the above options, drag the edge of the frame in which the object to be changed is located. If you need to maintain the proportions of the object's size when changing the scale of a layer, hold down the Shift key while stretching or shrinking. To save the size, press Enter on your keyboard.
In some cases, the size of the image on one of the layers may be larger than the size of the main background of the document. In this case, the background borders of this image will extend beyond the entire document. To see the boundaries of this background, you need to use the Navigator tool and use it to reduce the scale of the entire document to the size at which the boundaries of the larger object will be visible.
If you need to set a specific layer size, you must manually enter the required data into the transformation value fields. To change the height and width of an object independently of each other, enter the height data in column H, and the width data in column W. Data is entered as a percentage of the original dimensions. In order for the size to change proportionally to the original one, you need to enable the Maintain aspect ratio option in the settings panel.
If the picture you want to resize is on the main background, you should unlock the image. To do this, use the Layer from Background function. You can find it in the Layer menu, or just double-click on the layer. Next, the size changes in the same way as in the case described above.
If you need to resize several images located on different layers while maintaining the original proportions. Then simply select the required volumes while holding the Ctrl key.
Next, you should use the Image Size or Canvas Size function, they are located in the Image menu. When using the first option, the scale of objects on all layers will change. The second option will resize adjustment layers, as well as layers containing fill. The remaining layers will remain unchanged.

When you resize an image in Photoshop, the scale of all the layers that make up the document changes. This option can be found in the Image section. In the case when you need to change the size of not the entire document, but a specific layer, you need to use the functions of the “editing” section.

Good day to all!

, ? These questions often arise when publishing images on a website or social networks. I offer the simplest and most accessible methods to everyone.

The issue of resizing an image arises very often, and in order to quickly solve this problem, we need reliable and quickly accessible methods.

This is where we will start. First, let's look at the option .
Here we will also consider two options, and you yourself choose the one that suits you best.
For the first option, you will need Photoshop CS5 or CS6 installed on your computer.

There is no need to be afraid of him. This is actually a very multifunctional and complex software, but we don’t need all of its functionality. We will, with the help of this program, solve simple problems.

If you have Photoshop installed and are at least superficially familiar with it, that’s enough for us. If not installed, you can download it for free on the Internet, or from the official website for a 30-day trial version. (You can here: https://adobe-photoshop.ru.softonic.com).

HOW TO CHANGE THE SIZE OF AN IMAGE IN PHOTOSHOP INSTALLED ON YOUR COMPUTER?

Let's go to Photoshop. After activating it, simply dragging the desired image from the “desktop” into the Photoshop field, we begin to work with it. To do this, at the very top left, click on the “file” icon (shown in the picture below)

A window opens in which we must select “save for WEB”. By clicking on this section, a large window will open as in the picture below.

The first thing you need to do is look at what format the image is in. The format will be shown to us (see picture) at the top right, marked with the number 2. If the format is PNG, then it takes up a large amount of memory and you need to click on the triangle there and select the JPEG format.

This will immediately reduce the image volume by 5-8 times. In the picture you can see (number 1) at the bottom left that in PNG format the picture “weighs” more than 1 Megabyte. This is a lot.
When you change the format to JPEG, in the same place where the number 1 is, the size will change to 150 kilobytes, or almost 8 times smaller without degrading quality.

If you need to change the size in pixels (shown in the picture below on the right under the number 3 “image size”), then you can manually change the size of the width and height. You just need to understand that if you change the width, the height will change proportionally, and the image will not be distorted.

The same thing will happen if you change the height of the image. When you have completed all the operations and reduced the image to the size you need, you need to click “save”. Save to your “desktop” or the desired folder. This is the easiest way how to resize an image in photoshop .
There is a second method, which I will describe in less detail.

Go to Photoshop, drag and drop the desired image there, as described above. When the image appears in the Photoshop field, go to the “Images” section at the top right, then select the “Image Size” section and in the window that opens, set the width and height dimensions you need.
After all operations, click “OK” and save the resulting image in the “File” section. It's that simple!

HOW TO RESIZE AN IMAGE ONLINE

To answer the question - how to resize an image online, go to the website https://online-fotoshop.ru. This is almost the same Photoshop, only it is provided by the online service of this site. We don't need to download or install anything.

We will do everything online on this site. Go to the specified site, when Photoshop opens, you will see a window where you need to select “Upload an image from your computer.”

In order to change the image size, go to the “images” section (shown in the picture at the top left) and click “image size”. A window will open where you can change the size in pixels to whatever you need.
After resizing, go to the “file” section at the very top left and click “save”. A window will open in which you will see the quality and size of the image. Here you can change the format if necessary.

After all operations, click “Yes” and save the image where you need it.
This is how easy it is to answer questions how to resize an image in photoshop And how to change image online.

For a clearer understanding of the process of resizing an image, watch a detailed video tutorial:

Good luck to you!

Sincerely, Valentin Chepurnoy.

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