How to change the size of the image without loss of quality. Paint and Photoshop programs. How to enlarge photos and save changes Increase image resolution without loss of quality

You do not know how to increase the size of the picture? This is a very simple task, since everything you need is already installed on your computer. Read this manual, and you will learn how to change the size of the photo using 5 simple tools.

Method 1. How to resize images in Microsoft Paint

1. Find and run MS Paint. It is pre-installed on all versions of the operating system. Windows. Start\u003e All Programs\u003e Standard\u003e Paint:

1. Take the image to the Paint window or use Menu\u003e Open (Ctrl + O).
2. In the main menu of the program, find the "Resize" item and select it:

1. The image change and image proportions panel opens. You can specify the value in pixels. Do not forget to check the checkbox " Save proportions" Otherwise, the image will be deformed:

1. To increase the size of the picture, click the "OK" button and save the photo.

Advice:

• If it fails to set the desired photos, without stretching it, you can use the "Pruning" tool to remove unnecessary edges. How to do this, described in paragraph 3;
• To open the photo faster, click on it right-click and select from context menu item " Open with Paint»;
• It is best to save the image in the same format as the original.

Method 2. How to resize images in MS Photo Gallery

1. If Microsoft Photo Gallery is not installed on your computer ( Start\u003e Photo Gallery), you need to download and install it as part of Windows Essentials 2012;
2. Run MS Photo Gallery and find your graphic file;
3. Click on it right-click and select "Change size ...":

1. Choose a ready preset: " Small 640 pixels"," Middle 1024 "," Big 1280 ", etc.

1. Click " Resize and save" After you increase the size of the picture, the image will be placed in the same folder, it will also remain the original.

Advice:

• If you need to ask exact size Images, in the drop-down menu, select " Custom"And set the size for the most part of the photo;
• To change the size of several photos at the same time, select them by holding down the Ctrl key.

Method 3. How to change the size of the image in Photoscape

You can increase the size of the picture in Photoshop. Or use for this PhotoScape.

1. Upload photoscape and install it. Run the program;
2. Click the "Editor" tab and find the photo you want to change:

1. At the bottom of the image there is a "Resize" button, click on it.
2. Set a new photo size. Make sure the option " Keep the ratio of side»Enabled and click" OK ":

1. Save the edited image.

Advice:

• If you need to change the size of multiple images, use the tab " Batch editor" Add a folder and change the size of all photos in it;
• If you do not know the exact size, you can set the "percentage" from the source size.

Method 4. How to resize images in IrfanView

1. Install IrfanView - a great tool for viewing and increasing the size of the picture;
2. Add a photo by having threw it in the program window, or by clicking the first button in the toolbar:

1. Click the "Image" tab, select " Size / proportion» ( Ctrl + R.);
2. Install the new size in pixels, centimeters, inches, or as a percentage of the original image:

1. Save the image.

Advice:

• You can use standard dimensions: 640 per 480 pixels, 800 per 600 pixels, 1024 per 768 pixels, etc.;
• To save high quality Photos, make sure that the DPI parameter is set to at least 300.

Method 5. How to change image size online

1. To enlarge the size of the picture online, go to the PicResize website.
2. Click the " Browse."To choose a photo. Click " Continue.»:

1. Select the percentage of the original image, for example, 50% less. The tool displays the image size at the output. Alternatively, you can enter the exact size by selecting in the drop-down menu item " Custom Size»:

When you make a photo on a professional or amateur camera, you get the pictures of the huge size, which is not always convenient. Well, it is almost impossible to work with them in the editors. But if you download snapshots via the Internet, their size can decrease, to save your traffic, automatically. All pictures have a size in pixels and change it, respectively, it is also necessary in these measurement units.

Methods for resizing photos

• The most common and easy-to-use image editor that is practically on each computer is Paint. He is in standard programs and opens through the Start menu of your computer.

• Add a photo to this graphic editor to work, which is too small size. Next, specify, in which percentage ratio, the Paint should increase the size of this image. This menu item opens by clicking on the middle key in the top menu of this graphic Editor. Also, this window can be opened much easier, a simple combination of Ctrl + w. In a new window, the "Resizing and Tilt" menu contains all the necessary parameters to resize the image. Initially, all image sizes are set in percent, and the new setting of the picture size parameters is proportional. Although you can change the settings and pixels. That is, the image itself will retain all its original proportions, but will change the size itself. After you specify the necessary image size settings, you must click on the OK button and the graphic editor will change the dimensions of the editable image you want.

• If new dimensions correspond to the necessary parameters, save the image. If not - repeat the procedure until the file will take the dimensions you need. Increase the image size in this graphic editor can in the same way. Paint is simple and easy to work, it allows you to carry out all major manipulations with any images as quickly as possible, due to the understandable interface and simplicity of the menu items. There are other editors, but it is not always convenient to use them, because They are not pre-installed and have more complex parameters for changing the properties of photographs, even such simple, as the size of the photo.

How to change the size of the photo (video)

As often, looking through photos on the computer, we threw cool frames, because they were too small in size and poor-quality. But with help special programs You can save almost any image!

Improving image quality is a very voluminous topic. To improve the quality of the photo in Photoshop, color correction, increasing sharpness, retouching and many other operations can be used. All of them require certain skills and possession of special techniques.

But there are less complex ways when the image increases simply without loss of quality. Below we will look at the example, how to improve the quality of the photo if you need to increase the photo without loss of quality.

How to enlarge photos without loss of quality

Everyone had to face the image of a small size of a low quality. In such pictures, the pixels, points from which a bitmap image are strongly visible.

An increase in the image by stretching it with free transformation will only worsen the position.

In this lesson, work will be held in Photoshop CC 2017. But first we will look at the method for others, older, versions Photoshop.. And then we show how Photoshop CC 2017 can make the entire procedure automatically.

Open the image in Photoshop. Now we will gradually increase it in several goals. It is worth noting that you can increase the photo and raise quality, but with a limit in size.

Press the keyboard key Alt + Ctrl + I. We will have a window "Image size". Need to be between "Width" / width and "Height" / Height Click was pressed. Then width and height will vary proportionally.

Running the image twice, each time by 20%. For this in the drop-down list opposite "Width" We change pixels percentage (Pixel / Percent), and a numerical value from 100% by 120% and click OK.. Then we call the image size window again ( Alt + Ctrl + I) and increase by 20%.

We increased image size from 950x632 pixels up to 1368x910 pixels.

For a visual comparison, get the original image (950x632 pix.) And the resulting (1368x910 pix.).

We increased the image almost one and a half times and even improved quality. As can be seen, pixelization is less noticeable if closer image.

It remains to refine the result. Apply filter "Smart Sharpen" to the resulting image.

We go: "Filters" / "Strengthening" / Smart Sharpness / Filter / Sharpen / Smart Sharpen. By moving the slider, select suitable sharpness. If in a small preview window on the image to click the left mouse button and hold, you can see the picture before applying the effect. The difference is noticeable. The smooth transition of colors (without cubes) on the lenses of glasses is especially noticeable. We completely removed the noise, shifting the slider to the end to the right. The radius of sharpness took 0.3 pixels, the effect was applied by 79%.

Once again, compare the results.

On the left - the original image, in the center - after increasing the size, on the right - using "Smart sharpness".

After use "Smart sharpness" In the photo noise went, the image became cleaner.

Here is our result.

And now you will increase the photo and improve its quality with the help of automatic products Photoshop 2017.

Open an image in Photoshop, press the keyboard shortcut Alt + Ctrl + I. We will have a window "Image Size" / Image Size. Pay attention to the item "Fit under" / dimensions. Expand this list. In it, you will see the blanks of the options for increasing / decreasing the image without loss of quality. We use the automatic selection (second point in the list). In the window that opens, select the item "Good" and click OK.. It is not worth the best to choose because the original picture is too low quality, and it makes no sense to increase it.

Please note if we managed to enlarge the image from 950x632 pixels and a resolution of 96 pixes / inch to 1368x910 pixels with the same permission, the program made an increase of up to 1969x1310 pixels with a resolution of 199 pix / inches.

Apply "smart sharpness."

Now you yourself were convinced that you can enlarge the picture without loss of quality, and at the same time even improve the quality of the photo.

It is worth noting that this method can be useful not only to increase and improve small photos. For example, you need to provide a photo for an Internet resource or for printing in publishing. Your photo is excellent quality and big sizeBut for the publisher is needed even more. Applying the described method of increasing the picture and improve its quality, you will get an excellent result. After all, photos of large sizes with good quality will be much easier to pass this procedure.

The procedure is extremely simple. Do not put a cross in small pictures. Give them a second chance.

At a certain point, you may have a question about how to enlarge photos without loss for print. After all, with an increase in the image, permission is lost, which will affect the print. I can suggest to increase the size of the cropped image using the product called GENUINE FRACTALS 6.. Since I had experience with Genuine Fractals in the past and used it for some projects, I decided to write a small article about the professional increase in photos for printing, and in addition to do comparative characteristic between the means of magnification - Photoshop and Genuine Fractals 6 Pro.

1. What size is suitable for printing?

One of the most asked questions to photographers that do not have very large experience in the printed process, this is how large the images from their mirror digital camera can be printed. Traditionally, the rule is such that you need to divide the width of the image in pixels by 300 to get the printed size of the best quality in inches. For example, if you are removed on the Nikon D90 camera, the image resolution will be 4.288 (width) x 2,848 (height). Literally, this means that there are 4,288 horizontal pixels and 2,848 vertical pixels on the sensor of the image. If you multiply these numbers, you will receive 12,212,2224 pixels or 12.2 megapixels - the total number of pixels available on the sensor. So in the above case with D90 division 4,288 and 2.848 per 300 gives the size of the ottis 14.3 x 9.5 inches. Why do we divide by 300 and what does this number mean? This number represents "DPI" (dots per inch) or "PPI" (pixels per inch), and means how many points / pixels on an inch will print a printer on paper. The greater the number of "points" per square inch, the more tight and close to each other, the points will be located, giving a more smooth transition and less space between points and, in the end, less "grain". 300 dpi gives magazine print quality, and smaller values \u200b\u200bbelow 150 give graininess and fuzziness printed images.

Considering the above information, how big can your printed snapshot be made with Nikon D90? Now that you know what you mean dots on an inch, the first question that should be specified is how good quality will be an impression.

Take a look at the following table:

Nikon D90 12.2mp 300 dpi (highest quality) - 14.3 "x 9.5"

Nikon D90 12.2mp 240 DPI (good quality) - 17.9 "X 11.9"

Nikon D90 12.2mp 200 DPI (secondary quality) - 21.4 "x 14.2"

Nikon D90 12.2mp 150 DPI (low quality) - 28.6 "x 19"

If you want to take the highest quality snapshot to publish in a log as 300 dpi, you could easily print a full-scale standard 8 "x 10" and can even afford the sizes to fully match the page size, or print a non-standard format to size 14.3 "x 9.5 ". Some professional photographers are printed as 240 DPIs and find it enough to work that you can sell, so that you might go down slightly lower. However, the quality below 240 DPI is unacceptable for photographers due to loss of quality and "blur" or "blur" (if, the size of the image is changed incorrectly).

So does this mean that you are limited to such small printed pictures made using a mirror chamber? What if you want to hang your beautiful photo in the frame size 24 "x 36"? That is where the correct change in the size of the image will help achieve excellent results.

Printing photos during the film times was sufficiently light - the photographers already knew the printed size of 35 mm or the average film format and it was easy to know what size would be a printed image without a special loss of parts and sharpness. The invention of digital photography is now everything is different, sometimes more difficult with all this language DPI / PPI and options for resizing with different algorithms. New achievements in the field of digital processing allow you to now make a refinement much more with a minimum loss of quality and detail. Let's look at the two most used methods to enlarge the image that are used by professionals.

2. Enlargement of images withAdobe Photoshop.

Adobe Photoshop is the most popular graphic programwhich is used to increase images. A tool for increasing images in Photoshop is called "Image Size" and is available in the upper navigation menu. Image -\u003e Image size. When you open your photo and go to the size of the image, you will see something similar:

The source width and height indicate the size of the image loaded in Photoshop. In the example, I took a photo of 1024 x 768 in size and increased it four times by changing the width to 4096 (the height changes automatically, since I chose the option "Save the proportion"). Since I increased the size, the average section indicates that if I print this photo as a 240 DPI, I will get the size of 17.067 "x 12.8". If I change the value of 240 per 300 dpi, the parameters when printing will decrease to 13.653 "x 10.24", while maintaining the same image size.

Let's go back to real example and let's see what happens when the photo is increasing with using photoshop. I chose a picture of the bird, which made this year a little earlier:

Camera settings Nikon D3S @ 300mM., ISO 1400, 1/1600, F / 7.1

It has many details and very sharp, so this is an excellent example for the test. So the image looks in scale 400%:

As you can see, it is "pixelized", it means that it has many squares. This is because the original image consists of pixels and with increasing size, the only thing that the computer can do is to increase the number of pixels that are one pixel. In the example above, approximately 4 pixels now represent a single pixel, because the image is viewed on a scale of 400%, therefore, "pixelized". If you did the same for printing, it would not look good with all these squares. To cope with this problem, Adobe has come up with several image interpolation algorithms that convert square pixels and provide a smooth transition to both increasing and decrease the image size. However, Adobe strongly recommends not to increase the size of the photo, since additional pixels are created by analyzing the adjacent pixels and selecting the middle color for a smooth transition, which leads to the blurring of parts. Take a look next imagewhich was increased by Photoshop and the interpolation algorithm "Biobubic (smooth gradients):

As you can see, the boundaries of the pixels disappeared and got a smooth transition. There are no less, the boundaries are too smooth and the image has lost sharpness that was present in the source image. It is not very noticeable if you look at the photos from far, but if we consider very close, the lack of sharpness will be obvious. After the size increases, you can a little manually add a little sharpness, but do it very carefully, since this manipulation can make an unnatural image.

3. Enlargement of images withGenuine Fractals. 6

Quite popular among photographers tool to increase the image size is Onone Software's Genuine Fractals 6 Professional - advanced software For professional photographers, designed specifically to increase photos to very large and giant sizes. Compared to Photoshop, it has a more complex algorithm that not only analyzes the neighboring pixels, but also performs a decent job to maintain sharpness and details of the image. Here's what it looks like:

Using Genuine Fractals 6 is very simple - all you need to do is enter new image sizes or select dimensions from the Document Size panel, and the program will automatically increase it and makes it up to a specified size. For greater control over the transitions, the program allows you to select a type of image using the texture control panel:

As you can see, I chose a "lot of details," because I wanted to maintain the maximum possible detail for feathers and other sites. Here's how Genuine Fractals transformed the image after I clicked "Apply":

Nikon D3S @ 300mM., ISO 1400, 1/1600, F / 7.1

Now compare the enlarged image in Photoshop and in Genuine Fractals 6 Pro:

Pay attention to the abundance of blur in Photoshop (right) and relatively well-preserved items in Genuine Fractals. And this is without applying additional sharpness in Genuine Fractals!

4. Enlargement of images withBenvista. PhotoZoom. Pro.

Another software package that is very similar to functionality on Genuine Fractals, this is Benvista PhotoZoom Pro. This is what this product looks like:

And the same image processed in PhotoZoom:

Nikon D3S @ 300mM., ISO 1400, 1/1600, F / 7.1

Compared to Genuine Fractals:

Benvista Photozoom seems to keep sharpness a little better than Genuine Fractals, especially where feathers. I used the patented "S-Spline Max" algorithm to get the above result, and chose the "photo-detail" preset.

5. Conclusions

If you think about printing your images in large formatThat is not at all to be limited to the number of pixels in the sensor of your camera. As I showed above, you can enlarge the images to the desired sizes using the provided different manufacturers Tools and algorithms. I am sure that there are other products in the market that can give a similar result, so definitely give them a chance and see what is suitable for you. If you want to get printed pictures of professional quality, then you should consider buying such excellent tools like Genuine Fractals 6 Pro or Benvista photozoomThat will allow you to make widescreen printing and at the same time save the details as much as possible.

With the advent of photography in the first half of the 19th century, it could not have a natural desire to increase the image to the size of the artistic canvase. One of the real and most effective waysThat is still used to this day, consisted in the redrawing in the cells, but today it is rarely given such advice, because it is quite obvious that those who want to consolidate the image are interested in how to increase the size of photos on the computer.

Image size on PC monitor

Since I spoke about PC, I will say that on the monitor the size of images decreases / increases the Ctrl (- / +) key combination or the mouse wheel with the same pressed Ctrl key. And if you are online, you can influence the size of the image by changing the scale in the View tab in the browser menu. The resolution is not rebored) by calling this command by clicking the right mouse button right on the desktop.

Now, if you follow the principle of "from simple to complex", you need to figure out how to increase the size of photos in Paint, because, firstly, this is a standard graphic editor (Start\u003e All Programs\u003e Standard), which comes with the operating room windows systemAnd secondly, many people do not suspect some of his abilities, including the "Resize" button on the Home tab.

We stretch pictures in Paint

In the "Size and Tilt" dialog box, they usually put a tick in the checkbox "Save proportions" and indicate either percentage ratio or a specific value in pixels. In the second case, it is enough to specify only the desired image width (change horizontally) so that the second parameter has changed automatically.

In some Paint versions there is another "point" parameter, which allows you to enter certain image dimensions. If all OK, so tell me the editor.

Finding out how to increase most users probably do not even consider it necessary to add that without loss of quality, believing that it goes without saying. However, this silent condition is not so easy to perform, because the image in the rough approximation can be compared with a mosaic of multicolored pixels. It is not difficult to imagine how the picture will look, if it is easy to stretch, because the number of informative pixels will remain the same, and the physical size will increase.

To somehow keep the quality to a certain extent, you need to fill the "voids", taking into account the content of the surrounding pixels. Unfortunately, kind old paint copes with this far from all better, but there are many programs that, using various data interpolation algorithms between stretched pixels (resample / resample methods), can increase images with very decent quality. Most of these services, among which are particularly popular with paid Photozoom Pro, are functionally similar and easy to use, but if you simply recommend them to those who want to learn how to increase the size of photos in "Photoshop", it will be an evasive answer.

The abilities of "photoshop" in changing the size of photos

If you are going to increase the image, you should keep in mind that the result directly depends on the quality and size of the source material. After downloading the photo in "Photoshop" in the "Image" menu, select the "Image Size" command, thus opening the same window in which the dialogue with the program is conducted.

If you fully trust the program, you can only specify the width and height in the "Document Size" block fields, and the remaining parameters are left by default, including the Interpolation function (Resample Image) and the Resampling method "Biobubic Automatic" (Bicubic), which, as a rule, prefer the remaining five algorithms. Then open with the "Auto ..." (auto) button "Automatic Resolution" window, select the desired quality (default is "good") and click OK.

Note: Ressampling (Resample) is a data control function on images that change sizes or permission.

Little tricks

Perhaps not everyone knows about some well-known recommendations on how to increase the size of photos with minimal quality loss with any graphic editor with the functions of correction and resampling, but this does not have to be "photoshop".

First, it is necessary to prepare the original image, slightly increasing its scale and carefully examining the existence of noise, blurred areas (where they should not be), various stains and other probable defects. All disadvantages need to be eliminated (adjusted) and only then start changing the size.

Next, you need to increase the photo twice as many times, work with sharpness, contrast, saturation, then return to the desired size And make sure quality remains at the proper level. Here is such a small trick, but it is not all.

To which people just do not think about the search for the original solution of how to increase the size of photos.

It turns out that the image size is 10% consolidated, visually worsening the quality will not be noticeable. It suggests an obvious conclusion: it is repeatedly increasing the size of 10%, it is possible ... Well, and then - who has some fantasy. But this method is not universal, and its illustrative use for all photographs in a row will not necessarily lead to good results, which largely depend on the various qualitative parameters of the image, including from the format. A black and white photo, for example, we manage to stretch up to 50%.

These "secret" techniques are allowed only in cases where there are no other options for some reason, and, most likely, "tricky products" will require a very serious post-processing in "Photoshop".

Specialized programs

If you need an answer to the question of how to increase the size of photos with minimal headache, use one of the specialized programs that and the interpolation algorithms are more than that of Photoshop, and their own original technologies are available. In addition to the previously mentioned Photozoom Pro, these are services: Perfect Resiz, Reshade Image Enlarger, Onone Genuine Fractals Pro V6.0, AKVIS Magnifier V3.0 and others.