home > Internet > Is it possible to increase the resolution of the photo. How to resize an image without losing quality

Is it possible to increase the resolution of the photo. How to resize an image without losing quality

Good day, loyal readers and guests of the blog! Today's article is a small tutorial that will explain you how to enlarge a photo without losing quality on a computer. To do this, I have attached some instructions for resizing an image in Photoshop and Paint.NET.

In addition to this, I will also tell you about other applications and online services that allow you to zoom graphic files. Let's take a closer look at the material!

Work on the scale of pictures in Paint.NET

Everybody knows standard program Paint, which allows you to resize images by the number of pixels or by specifying a percentage. However, she cannot keep track of the drop in image quality when scaling it. Therefore, now we will talk about another free raster graphics editor - Pant.NET.

The named editor was created by two students specifically for the operating system Microsoft Windows. Now it's pretty powerful and convenient editor photographs and pictures that we can use to achieve our main goal– high-quality increase in the image.

To do this, you need to perform a number of actions:

However, do not forget that a very small picture cannot be enlarged many times and still expect a perfectly clear result. At least not with this program. It is suitable for minor changes.

Using the power of Photoshop

I am sure that all of you have heard about this multifunctional and powerful graphics editor. It allows you to solve really complex problems and copes with them perfectly well. The guides I've attached below will work with many popular versions of Photoshop, including CS5 and CS6. Don't forget to increase the canvas size before scaling the file.

So, the first option is to use the "Image Size" command. For this you should:

1. In Photoshop, go to the "Image" tab and select "Image Size";

2. In the dialog box that opens, specify the image dimension in pixels or percentages:

3. Check the boxes next to the last three items: "Scale styles", "Keep proportions" so as not to distort the graphic file, and "Interpolation";

4. And here is the most interesting. Interpolation directly affects the image quality. When the resolution is reduced, some of the pixels are discarded, but when the resolution is increased, the program generates new similar pixels to fill in the missing amount. That's why the output images look blurry

Photoshop offers several interpolation methods:

Nearest pixels. Fast but inaccurate method. It retains sharp edges, which means that when you zoom in on a photo, you may notice stepped lines. More suitable for illustrations.
Bilinear. Interpolates horizontally and then vertically. The output is a smoother image, but the quality leaves much to be desired.
Bicubic. A rather slow method, but more accurate. The tonal gradations at the output are smoother, without visible teeth.
Sharp bicubic. Used to reduce images. Sometimes the sharpness of individual details is exaggerated.
Smoothed bicubic. Just used when enlarging graphic files.
Choose one of them;

5. Click OK.

There is one drawback in this method. If you resize the image several times, its quality will deteriorate significantly, as the program will add and / or remove pixels depending on your actions.

“Is it possible to bypass these negative consequences?” - you ask. Answer: yes. Immediately set the desired size of the old picture or use this “trick with ears”:

In the "File" tab, select "Open as smart object ...";
After that, stretch the image to the desired size;
Press Enter when you're done scaling.

In this case, pixels will not be lost during resampling. And at the end of the graphic file will be slightly blurred.

In any case, you can add contrast and sharpness to increase clarity.

Method 1: How to resize an image in Microsoft Paint

Find and launch MS Paint. It is preinstalled on all versions operating system Windows. Start > All Programs > Accessories > Paint:

Drag the image into the Paint window or use Menu > Open (Ctrl+O).
In the main menu of the program, find the item " Resize"And select it:

The image resizing and aspect ratio panel will open. You can specify the value in pixels. Don't forget to check the box " keep proportions". Otherwise, the image will be deformed:

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

Tips:

If you can't size your photo without stretching it, you can use the Crop tool to remove unwanted edges. How to do this is described in paragraph 3;
To quickly open a photo, right-click on it and select from context menu paragraph " Open with Paint»;
It is best to save the image in the same format as the original.

Method 2. How to resize an image in MS Photo Gallery

If Microsoft Photo Gallery is not installed on your computer ( Start > Photo Gallery), you need to download and install it as part of Windows Essentials 2012 ;
Launch MS Photo Gallery and find your graphic file;
Right-click on it and select "Resize...":

Choose a preset: " Small 640 pixels”, “Medium 1024”, “Large 1280”, etc.

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

Tips:

If you want to set the exact size of the image, in the drop-down menu, select " Custom» and set the size for larger side Photo;
To resize multiple photos at the same time, select them while holding down the Ctrl key.

Method 3. How to resize an image in Photoscape

You can resize an image in Photoshop. Or use Photoscape for this.

Download Photoscape and install it. Run the program;
Go to the "Editor" tab and find the photo you want to edit:

At the bottom of the image is the " Resize" button, click on it.
Set a new photo size. Make sure the option " Maintain aspect ratio is enabled and press the OK button:

Save the edited image.

Tips:

If you need to resize multiple images, use the " Batch editor". Add a folder and resize all photos in it;
If you do not know the exact size, you can set "Percent" of the original size.

Method 4. How to resize an image in IrfanView

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

Go to the "Image" tab, select " Resize/proportion» ( ctrl+r);
Set the new size in pixels, centimeters, inches, or a percentage of the original image:

Save the image.

Tips:

You can use standard sizes: 640 by 480 pixels, 800 by 600 pixels, 1024 by 768 pixels, etc.;
To save high quality photos, make sure the DPI is set to at least 300.

Method 5. How to resize an image online

To increase the size of a picture online, go to the PicResize website.
Click the button Browse” to select a photo. Click " Continue»:

Select a percentage of the original image, such as 50% smaller. The tool will display the output image size. Alternatively, you can enter the exact size by selecting " custom size»:

They asked me one very interesting question, which prompted me to write this very article, which you, yes, you are reading right now.

The question was how to resize photos in .jpg and other formats on a computer. It would seem, well, is this a problem with an asterisk? There would be an almighty Photoshop on a PC, and such problems would not have happened. Only here the difficulty lies in the fact that, alas, only a few have managed to become the gods of Photoshop yet, and not everyone wants to overload their favorite laptop with such weighty software. How to be then? How? To solve the problem, of course, in other ways, because there are plenty of them! Let's check?

Method number 1: how to resize a photo in paint

After reading the name of the first subheading, someone will ask with surprise, but is it not about the standard Paint program built into Windows that will be discussed now? Yes, yes, it is about that one, and in principle there is nothing to be surprised here. This simple, but not "empty" program has a lot of advantages. If you wish, you can make screenshots in all parameters in it, attach text to the picture, change the background on the avatar, and even choose a different file format if necessary. And how to change the size of a photo or the resolution of a picture in Paint, you want to know?

Well, then, for starters, let's run this program on our computer. Someone does not remember, you can find it in the "All Programs" section of the "Start" menu, in the "Standard" folder:

After starting the program, we find the “Paint” button in the window that opens, click on it, and then select the “Open” tab in the menu that appears in order to add a photo that we have to edit:

In principle, it is even easier to achieve the same result: we find on the computer the picture that needs editing, right-click on it, and then select the items "Open with ..." and Paint in turn in the menu that appears:

One way or another, after the photo opens in Paint, we will need to decide on the editing option, based, in fact, on our goal.

Option #1: Crop the image as you wish

If we don’t need some special image format, for example, 5x5, 3x4, etc., but we just want to crop the photo, then this tricky way is indispensable. True, in this case it is important for us that the edited image be fully visible in Paint. If this is not the case, then after opening the photo in the program, first we need to reduce its scale by clicking the “-” button in the lower right corner once or twice, otherwise you won’t end up with problems later

Now, having the “full picture” in front of us, we press the “Select” button on the top panel in the program and use the mouse to select the area we need in the photo. She, in fact, will become our new image:

After that, press in turn:

Ctrl + C (copy the selected fragment);
Ctrl + A (select the photo on the screen completely);
Del (clear the screen);
Ctrl + V (paste the copied image).

Not the best option, Yes? But that's for now! In order to remove unnecessary white stripes, click on the small square that outlines the work area, and drag it to the main part of the photo in order to “align the image”:

We save the resulting photo like this: press the Paint button, click "Save As", and then after choosing one of the proposed formats, click "Save":

At the same time, it is worth adding that with the help of Paint you can safely get rid of the background in the photo. The principle of editing is almost the same. The only thing that when choosing the fragment selection mode, it will be necessary instead of standard way select the "Custom area" option. You can find it in the list of settings under the "Select" button, which opens when you click on the icon in the form of a small black triangle:

The main thing is not to forget that you need to outline the entire outline of the object that we want to see in the finished version!

Option number 2: Choose specific parameters for the photo

In the event that we need to get an image with some specific parameters for width and height, you can use the "Resize" function built into Paint to edit the photo:

With its help, in particular, you can set the parameters for the image in percentage and pixel ratio, with or without maintaining proportions, change, if necessary, the angle of inclination horizontally or vertically. In this case, you can resize not only the entire photo, but also a separate part of it. In the latter case, however, initially it will be necessary to select such a fragment using the “Select” button already familiar to us:

It is easy to see that, by its nature, the "Resize" function in Paint is nothing more than a ready-made answer to the question of how to change the resolution of a photo on a computer without extra effort. Well, judge for yourself! Simply set a certain number of pixels in width and height to reduce or, conversely, increase the resolution of the photo. The scheme is still the same: the more pixels, the higher the resolution and, accordingly, better quality Images.

Option #3: How to resize a photo in paint

When wondering how to resize a photo without losing quality, you should pay attention to such an opportunity provided by Paint as choosing a new format for an image when saving to a PC. What's the matter here? And the fact that different formats "weigh" differently. In particular, the same image with dimensions of 2560x1600 pixels will "weigh" with almost the same quality in the format:

JPG - 1.95 Mb;
PNG - 9.33 Mb;
TIFF - 10.8 Mb;
BMP - 11.7 MB.

In principle, this question, how to resize a photo without losing quality, could have been closed, if not for one “but”. Actually, what if the option with 1.95 MB does not suit us? Let's say the site has a limit of 500 Kb when uploading an avatar. And what to do then? Not with a claim to the site moderator to run, right? Of course not! In this case, you will have to experiment with a function such as "image compression".

It is good because it makes it possible to easily reduce the "weight" of the photo. True, there is a reverse side of the coin. The fact is that images are “compressed” by reducing the number of pixels, which means that as a result, the photo will decrease in size in width and height. However, there seems to be no other way out. At the same time, you can use this function even without an Internet connection: you just need to run it on your computer standard utility"Picture Manager" supplied in the package Microsoft office.

Method number 2: Use the "Picture Manager" If available

How to "compress" a photo using the "Picture Manager"? To begin with, let's open it in this program using the method already familiar to us from working with Paint:

Did you manage? Then we find the “Picture” tab in the “Picture Manager”, open it and select the “Compress Pictures” item:

After that, in the menu on the right, select the appropriate photo compression option. In particular, depending on the purpose of using such a photo, the program provides compression options for documents, web pages or Email. For comparison:

It is easy to see that the higher the compression level, the lower the "weight" and the resolution of the photo. However, you can choose intermediate options. To do this, we go again to the "Picture" section, but this time we click on another item - "Resize". Here, in the menu on the right, we set the “standard ...” parameter, and then select the option that is appropriate for the image size:

Here, as in the case of Paint, you can also set an arbitrary width and height of the image, or specify their percentage. However, we are again offered to work with pixels. The question arises, how then to get a photograph, for example, with parameters of 3x4 cm? There are several options: either calculate the size manually, or use special online editors. In the first case, you will have to act like this:

select the printer resolution (300, 600 or 1200 DPI). We are interested in 1200 DPI, as it provides the best print quality;
calculate the size of the photo in inches. Considering that the photo we have is 3x4 cm in size, we first divide 3, and then 4 by 2.541. We get the photo format - 1.181x1.547 inches;
Convert the image size to pixels. To do this, we multiply the resulting photo dimensions in inches by the printer's resolution. In our case, 1.181*1200; 1.54*1200. As a result, we get the photo parameters - 1417 × 1856 pixels.

Think it's difficult? Then it's time to talk about the benefits of online photo editors!

Method #3: How to resize multiple photos at once online

It should be noted that today there are dozens of the most diverse online services designed for editing photos, including resizing photos online. In the review, we will consider only those that are simultaneously suitable for three parameters, namely: free, easy to use and effective.

Looking for the best way For how to resize multiple photos at the same time, check out resizepiconline.com. Judge for yourself: the entire setup procedure fits in 4 simple steps:

The only thing is that with the help of this site it will not be possible to cope with how to increase the size of a photo on a computer. But is this a problem with the internet?

You can also reduce or, conversely, increase the size of images using the site inettools.net. The action plan is quite simple. First, upload a photo to the site using the standard uploader:

As a result of such simple actions, we see a link to the photo and the “Download” charm button, which we just have to click to download the edited photo to the computer:

That's the whole principle of working with this online service!

croper.ru

At the same time, when editing photos, one cannot but pay attention to such an online service as croper.ru. Why is he good? Probably because, unlike the above sites, this web editor also has supernatural versatility. Judge for yourself: with this online Photoshop, you can not only reduce the size of a photo, but also crop the image, rotate and flip it vertically or horizontally, add effects, frames, and even combine several photos into one.

At the same time, the principle of work on croper.ru is not particularly original. To get started, you will need to upload a file, and only then select the desired photo editing option in the “Operations” section. In this case, we are interested, in fact, how to resize the photo. Let's stop there:

So, in order to reduce the size of a photo on croper.ru, after selecting the appropriate editor option, it will only be enough to set the parameters we need using the lever and click the "Apply" button:

However, you can access the new image different ways, namely:

by placing it automatically in a profile, on a wall or in an album on the Vkontakte website;
by saving the photo in the computer memory or on photo hosting;
by copying the link to the new photo:

Simple, fast and convenient! Is not it?

As for resizenow.com, this site is not particularly unique either. To increase / decrease the size of a photo, again, you first need to upload a photo, and then select either simple or advanced editing mode.

In a simple one, just click on the appropriate option for “compressing” the photo and clicking “Resize” for the settings to take effect. Advanced, on the other hand, provides for changing the photo by the number of pixels and image quality, and also has built-in options for improving sharpness and adding grayscale:

At the same time, in order to download the finished result of editing, you just need to press a single button. True, it should be borne in mind that the image will be available for download on a PC only for 15 minutes, then it will be automatically deleted from the site.

How to increase the size of a photo up to 200 kb for public services online

Public services require a specific photo size, namely 200 kilobytes, how to do it online? We'll tell you now too!

In this window, just move the slider to the right to increase the size, and you can also change the format of the photo - this also increases its size:

That's all, I hope the article was useful for you!

Author - Help me. This is a quote from this post.

PhotoZoom Pro 5: How to Enlarge a Photo Without Losing Quality
How to make a large photo out of a small one without losing quality. I present to you the program Benvista PhotoZoom. This small and lightweight program will allow you to enlarge the image by 50% or more, depending on the quality of the initial photo.

Of course, you can try in Photoshop. But firstly, you will have to work very hard, paint somewhere, retouch somewhere, and so on ... And secondly, it is not recommended to increase a color image in Photoshop by more than 10%.

In the Benvista PhotoZoom program, all this is done in just a couple of minutes. There are some more functions: left and right rotations, horizontal and vertical reflection, cropping and stretching the image. They are, frankly, not that important. But in working with photos, this program is simply indispensable, at least for me.

At the bottom of the article you will find a video tutorial, but first screenshots that enlarge when you click on them.

How to use Benvista PhotoZoom

PhotoZoom Professional is the best software available for enlarging digital photos! PhotoZoom Professional's proprietary S-Spline zoom technology is based on a patented adaptive technique that can be classified as revolutionary. Save the quality of your pictures! Now you can enlarge your photos without worrying about loss of quality

Features of PhotoZoom Pro:

Magnifying Photos with S-Spline Max Technology

Various preset settings for different types images

batch processing multiple photos with the same settings

Extensive support for many image formats

To open the program or click on the button Open (folder icon), or run the command File → Open, or by dragging on the field. or perform a combination Ctrl keys+O. The program does not understand many types of graphic files, but these are the most common types. If you have files of such types of photos that are not accepted by this program, you will have to convert them in specialized programs. For example, in programs ThumbsPlus, PIXResizer and others. Only one image can be opened.

After opening the image in the panel New Image select a unit of measure. The default is inches, so select cm. It also displays Permission open image. Typically, resolution is specified in dots per inch (dpi). Usually the resolution is taken as 72 dpi.

To the right of the panel original size there is a window preview. On the right side of the working window there is a panel that shows outdoor photography in real size. If the photo does not fit entirely in the real size window, then the rectangular frame in the preview window shows that part of the photo that is visible in the real view window.

To quickly move, you need to pick up with the mouse either a real image or a rectangular frame in the preview window and move it to the desired direction.
The mouse pointer changes appearance: In the real size window, it becomes a palm, and in the preview window, it becomes a cross arrow.
Below the real-size window, a zoom option is provided. By default, the scale is real.

In the viewport, you can zoom in or out from 25% to 400% to get a better view of the details.

On panel new size define a new size for the open image. Measurement in pixels is traditional for working with graphics, although you can also change the new dimensions of the image relatively, that is, using percentages.
Before setting the magnification for the picture, check that the option is enabled Keep proportions. The width and height dimensions are related. Therefore, by changing one size (for example, in width), the other size changes proportionally. The new size is specified either in pixels or as a percentage.

In the drop-down menu there is also a function of cropping and stretching
Option Stretch:

When choosing an option pruning button appears correct.. When you click on it, a frame appears on the photo. By moving the sliders, we select the fragment of the image we need

In chapter new size, ask new parameters to enlarge the picture.

They can be set in percentages, pixels, etc. (from the drop-down list).

All changes are tracked in the preview window

Listed Resizing algorithm the algorithm for recalculating the original image dimensions to the dimensions you specified is selected. The new image will occupy a different number of pixels than the original one. The recalculation algorithm just determines what color to fill each new point in the image. By default, own methods are offered, developed by the developers of this program (in our case, the algorithm S-SplineMax- includes the widest settings).

In the Resize Algorithm, you will find several photo manipulation packages.
Each package has its own parameters. You can view more details by selecting the item on the toolbar. Options.
A window will open in front of you and in the settings section, in the drop-down menu, you can select a set and, if you wish, uncheck some of the checkboxes for certain functions.

You can choose different methods in turn to compare the best one for the open image. Just because one method is better at processing one image does not mean that it will also be the best at processing another image.

And back to editing our photo. In order to see the rest of the settings, it is better to select () . We go into the presets and we can choose one of them and see how our picture will change in this case.

Next, you can set contour sharpness. To do this, put a tick in the checkbox of the same name. And a few more settings become available - you can play with them and select the ones you need by moving the sliders, and stop at those at which the image will look the best.

In the top menu section, select Edit and we can:

Flip Horizontally

Flip Vertical

Turned to the left

Turn Right

If you have changed the dimensions of the original image, but want to return to these original dimensions, then execute the command Edit - Restore image.

We can do the same from the panel in the preview window.

Above the live view panel, the following tools are offered:

Navigation() - document navigation. Pick up the image and move it to the desired side;

Selection() — selection of a fragment on the image. To reset the selection, simply click with this tool anywhere in the open image. You can also reset the selection with the commands Edit → Deselect or key combination ctrl+d;

Crop() - image cropping. You can only crop a selected area in an image.

Flip image horizontally() and Flip image vertically() - image mirroring horizontally or vertically;

Rotate image 90 degrees counterclockwise() and Rotate image 90 degrees clockwise() - rotate the image counterclockwise and clockwise by 90°.

In Benvista PhotoZoom, you can create your own packages of settings for processing photos. To do this, select from the top menu Package -> Create.

I will not dwell on this function in more detail, since I believe that each image has individual parameters, and therefore it is necessary to work with it individually.

You can save the image processed in the program through the menu File - Save As, or click on the icon Save, or use the keyboard shortcut Ctrl+S
You can save the image in PNG formats, TIFF, JPEG, BMP, TGA.

Icon New package closes the previous image and creates a new batch to process the next image.

Icon Options opens the window of the same name. There are four tabs in the window: Presets, Image Formats, Processing and Update.
On the tab Presets defines the resizing method that will be offered to the user by default. In addition, here you can select other sets from the list. If any presets are not needed, then uncheck the box with its name.
On the tab Image formats methods for compressing compression file types are proposed: TIFF, JPEG and PNG.

Here vrodeby and all the main functions of the program - it is not at all difficult to figure it out.

You can download the Benvista PhotoZoom program without much difficulty on the Internet, you just need to type the name of the program and attribute "in Russian". The best way to do this is torrents.

By default, the Russian interface language is offered. But if you forgot to select the Russian language during the installation of the program, then you can select it with the command Options→ Languages → Russian. The language changes only the next time the program is loaded.
According to materials chironova.ru, obrazovanie-saratov.ru

To understand what processes are embedded in the mechanism of image resizing, read - the building material of any bitmap image. In short, these are small colored squares, from which, like a mosaic, a picture is formed.

When we talk about sizes, we're talking about about permission. It is written as the sum of the pixels in one row in width and one column in height and is written like this: 655×382. These are the sizes of the following art:

Therefore, when resizing the image, we must change the width and/or height values of these pixels.

In case of downsizing, for example, if we change our example to 300×175, the image will already consist of 300 pixels in width and 175 pixels in height. No narrowing has taken place. Photoshop counted the pixels in the image and figured out which ones to get rid of.

But this process is not reversible. If you need to return everything back or do even more, then a new process will start - an increase.

In case of size increase, Photoshop calculates which pixels are missing and adds them based on complex processing algorithms. This process cannot be of high quality, so when the image is enlarged, the quality is lost. The picture loses sharpness of details, becomes blurry. For clarity, I will increase the example above to its original size. Compare:

Thus, when zoomed in, the quality will greatly depend on the initial size of the image and of course, to which you need to "grow".

Image Size Dialog Box

So, the most basic way to resize an image is to use the menu command:

Image - Image Size (Image - Image Size).

Hotkey: Alt+Ctrl+I.

A dialog box will open:

This dialog box allows, firstly, to obtain information about the current dimensions of the image, and secondly, to actually change them.

Dimension (Pixel Dimensions)

To change the size of the image, change the values Widths and Heights. By default, they are measured in pixels, but percentages can be selected from the drop-down list.

Pay attention to the bracket and the icon in the form of a chain. This means that when changing the width or height, the second value will automatically change in the same proportions as the original image. This is necessary so that it does not turn out to be compressed or elongated. To enable/disable this feature, check the box "Keep aspect ratio"(Constrain Proportions).

Print size (Document Size)

I mentioned this group of settings when talking about the printer. Permission(Resolution) changes the pixel size and affects the print quality. For printers, feel free to set in the range of 200-300 pixels per inch.

The Width and Height values tell us what sizes of paper the image can be printed on. Changing the numbers will also change the size of the image. Please note that there is also a function to preserve proportions.

Scale Styles

Determines whether the program will scale any layer styles applied to the image. It is recommended to leave this box checked, otherwise, for example, the shadow you added may end up being larger or smaller than the picture itself.

Interpolation

This is your key to changing resolution without affecting image quality. Interpolation(Resample Image) is the process by which Photoshop responds to a resize command by adding or subtracting pixels. The problem is that when interpolating, the program "guesses", and this can ruin the image quality.

When you first start the program, setting Interpolation turned on, and is responsible for increasing or decreasing the number of pixels in the image. These processes reduce image quality as the program either creates the pixels or chooses which ones to remove accordingly. Turning the setting off will protect the quality by locking the pixel size.

When you check the box Interpolation, you need to select a method from the drop-down list below. Why might this be required? Sometimes you'll need Photoshop's help to create an image that's larger or smaller than the original.

For example, if you have an image with a resolution 200 ppi, the size of which when printed is 4x6, and the size of the printed version should be 5x7 and it is desirable to keep the resolution in 200 ppi. To do this, you can check this box.

The options in the drop-down list below the Interpolation check box determine what form of math Photoshop uses to add or remove pixels. Because higher image quality means more work, the better the image, the more time the program needs to complete the above process.

Here are the options available to you, sorted by quality (worst to best) and speed (fastest to slowest):

Nearest Neighbor (preserves crisp edges) (Nearest Neighbor). Although this method results in the most low quality images, it can be useful as it creates the smallest files. Useful if you are transferring files over the Internet, and you or the recipient has a slow connection. This method works by looking at the colors of the surrounding pixels and copying them. It's known for creating jagged edges, so you should only use it on images with hard edges, such as illustrations, that haven't been anti-aliased.
Bilinear. If you choose this method, Photoshop will guess the color of the new pixels by choosing something between the color of the pixels directly above and below, and to the left and right of the one being added. The result of this method is slightly better than when choosing the option By neighboring pixels and it's still pretty fast, but you're better off using one of the following three methods instead of Bilinear.
Bicubic (best for smooth gradients) (Bicubic). This method determines the colors of the new pixels by averaging the colors of the pixels directly above and below the new one, as well as the two pixels to the left and right of it. This method takes longer than the previous two, but creates more smooth transition in areas where one color is replaced by another.
Bicubic smoother (best for enlargement) (Bicubic Smoother). Close to the previous method in terms of how new pixels are created. This method blurs the pixels slightly so that new ones can be overlaid on old ones, giving the image a smoother, more natural look. It is recommended to apply this method to enlarge images.
Bicubic sharper (best for reduction) (Bicubic Sharper). This method is also similar to the method Bicubic (best for smooth gradients) by the way new pixels are created, but instead of blurring entire pixels to improve the blending of new and old like the previous method, it only softens the edges of the pixels. It is recommended to use this method to reduce images.