Compress images in Photoshop without losing quality. How to reduce the size of a picture or image? Maximum compression
The main thing is to indicate the image on your computer or phone, specify the quality from 1 to 100, and click OK at the bottom of the page. The rest of the settings are set to default. How more indicated " quality» in settings (80-100), themes the size will be larger file. And vice versa, lower quality(50-75) will give smaller size JPEG file. If necessary, you can find out the level of quality (compression) with which the jpeg file was created.
If, after compression, the size of the jpeg file has become, on the contrary, larger than the original, then you need to lower the quality level from 80 to a lower number, for example, set 60. The sizes in pixels and megabytes before and after compression can be seen after processing or pressing the OK button. If, at a quality level of 40-50, the size is still larger than the original, then there is no point in compressing the image - it was already well compressed. You can only try to remove the metadata embedded in the jpg file or remove exif + make the jpg progressive without losing quality.
In the settings, you can select the type of subsampling (decimation), which allows you to achieve greater compression of the jpg file with minimal losses. Subsampling 1x1 gives the best image quality, bright color transitions are preserved, mainly suitable for high-quality previews or small preview images. 2x1 subsampling is the most common method, used in almost all digital cameras, compression of sharp color transitions occurs horizontally, allows you to achieve a smaller file size without much loss, great for large images. 1x2- the same as 2x1, but only the averaging of sharp color transitions will be vertical. Subsampling 2x2 averages sharp color transitions horizontally and vertically, allows you to achieve the smallest file size, and is suitable for blurry pictures.
The original image is not changed in any way. You will be provided with another processed image in jpg format.
The photos of "Red Pepper After the Rain" show the JPEG quality level for comparison: 
The dimensions of this jpg image depending on the quality level (Q is quality, KB is the size in kilobytes):
Q 10 = 2 KB; Q 15 = 2.7 KB; Q 30 = 4.3 KB; Q 50 = 5.9 KB; Q 60 = 6.7 KB; Q 70 = 7.9 KB; Q 80 = 9.8 KB; Q 90 = 14.1 KB; Q 100 = 46.5 KB.
From the above examples we can conclude that the best size-quality ratio can be a quality level from 75 to 95. And in order for the picture to occupy the smallest size and at the same time be more or less normal, a quality of 60-70 is suitable. If quality does not matter, but you need a small file size, then a quality percentage of 30 to 50 is suitable.
Please note that the file size of a progressive JPEG image is usually 2-3% smaller than a standard one with the same image quality, and it will also open beautifully when loaded into an Internet browser, as is usually done in films! An example of a standard and progressive JPEG image can be viewed.
There are times when you need to quickly reduce the amount of space on your computer's hard drive that JPG photos occupy. It is desirable that the procedure takes place without significant loss of image quality. There are several simple ways to make a photo “lose weight.”
Is it possible to reduce JPG size online
The weight of the image is taken to be its volume in megabytes, which sometimes needs to be made smaller. This procedure is extremely necessary for those who often work with photographs, because modern devices take pictures of considerable size. It will not be possible to store a significant number of “heavy” drawings - this requires an additional hard drive, and often the price of another information storage is high. However, special programs have already been created that reduce the volume of pictures. In addition, before installing them, you can try compressing photos online.
On the World Wide Web you can find many services with which you can figure out how to compress photos in JPG format to fewer megabytes. They all work on the same principle - the user uploads the required image to the site, presses just one button, and after a while the system asks to save the image with a reduced size to the computer. Internet services are completely free, so this method of compressing photos without losing quality is considered one of the best and fastest.
As a standard, such portals have many additional functions and capabilities - cropping the image, rotating it in the desired direction, mirroring it, or even adding beautiful frames/effects. The resources are freely available, so to find them, you just need to enter a query into any search engine, and in a second you will receive a whole list of photo compression sites.
How to compress a JPG file
It also happens that the speed of the Internet or the technical data of the computer/browser do not allow you to upload photos to the network. Then special services come to the rescue that can compress photos without losing quality. You can use third-party utilities or standard ones (Windows basic set). Therefore, before you reduce a JPG file, you need to understand on what principle these programs do their work.
How to compress a photo to the desired size in Paint
Paint is a standard Windows program for processing any images, so there is no need to install it. With its help, you can easily compress photos to the desired format. There is no need to download it; it is already present in the basic set of the operating system. The program is easy to use - just a few mouse clicks are enough for the picture to become the desired size. How to reduce JPG file size using Paint:
- Open the picture in Paint (right-click on the photo, “open with”, select Paint).
- On the top workbar, select the “resize” tool.
- Select the “horizontal” option and change the specified value downward.
- Enter a similar value in the “vertical” section.
- Click OK.
- Save the modified drawing.
How to reduce the weight of a JPG file in Photoshop
A very popular service that will help you figure out how to reduce the size of a JPG file without compromising quality is Photoshop. A graphic editor with a large set of functions can frighten inexperienced users with an abundance of incomprehensible buttons. However, if you know the sequence of actions, it will be easy to reduce the number of megabytes of photos. Before you can compress JPG using Photoshop, you need to install it. What to do after this:
- Open the picture in Photoshop (right click on the photo, “open with”, select Adobe Photoshop).
- Alternatively, the picture can be opened directly from the utility – “File” tab – “Open” item.
- In the top work area of the “Image” menu, then select “Image Size”.
- The window that opens will allow you to select all the necessary proportions of the photo (size of centimeters/pixels, width).
- At the bottom of the window, be sure to check the “Maintain proportions” checkbox (when you change the parameters, they will be edited evenly).
- In the "File" menu, select the "Save As" sub-item.
- Choose a JPEG format that will retain the original quality.
- After selecting the format, click on the “Save” button.
Other ways to compress JPG without losing quality
To process an image and reduce its weight, you can use third-party utilities, online web services - some of which are free, while others will have to be paid for. They provide different percentages of image compression, which is important - without affecting the quality. If you don’t know how to reduce the size of a JPG file, then in the table below you can find the necessary programs to help with this simple task:
| Utility/web service | Platform | Compression, percent |
| JPEGmini Lite |
How to reduce the weight of a photograph or any other picture very quickly, without getting into the jungle of Photoshop? There is a simple program! Moreover, which does not need to be installed, since it is available on almost all computers with the Windows operating system. Don't want to understand the program? Reduce photos using the online service webresizer.com, read about it in detail below!
It is necessary to make the weight of images less for the reason that the site pages on which they are located will take a long time to load, which means that those whose Internet speed is not very fast will close them before they see their contents. There will be many refusals and, accordingly, a decrease in rankings in search results.
We use photographs for illustration purposes in every blog post. Each of them is uploaded to the hosting and takes up space. Add plugins, texts, a dozen editions to them - a blog can weigh like a cast-iron bridge. Not everyone knows Photoshop, and for such a simple operation it is not needed.
Reducing the weight of a photo or image in Picture Manager
To reduce the weight of photographs, for the last few years I have been using a program included in the Microsoft Office package - Image Processing Manager. It's called Microsoft Office Picture Manager. If you have a Word text editor, then you should have this program. With its help, you can quickly reduce the weight of both one photo and a group of images at once.
Let's go into the program. Path to Microsoft Office Picture Manager: "start" — "all programs" — "microsoft office tools" — "microsoft office picture manager". Or even easier - click on the desired image, then right-click on it and select "to open with". Several programs will be offered, including Picture Manager. Open the image in the program:
In the upper left corner, click tab "file" — "add picture shortcut".
In the window that opens, find the folder in which one or several photos are stored. Click "add". All photos from this folder will be loaded into the program.
Important: if you blog on the Internet,
You should always remember to optimize images.
The optimal weight of images for a blog is 50 kb. and less.
How to reduce the weight of one photo
Select the desired photo with a mouse click.
In the top toolbar, go to the tab "drawing" and select the option "compress pictures":
A column will appear on the right side of the screen "Compress pictures":
In field "Compress for" choose the appropriate size. At the bottom ( "Expected total size") see what weight suits you. Usually I choose for "web pages". As you can see, the original photo in my example weighed 1.82 MB. After compression, the photo will weigh 76.2 KB, which is enough to illustrate articles on my blog: the quality is preserved and the weight is small.
Having selected the desired compression option, click "ok".
Now the photo needs to be saved. It is better to leave the original - the full version, and save the compressed photo as a separate file. In the top toolbar go to "file" — "save as". In the window that opens, select the path in which folder to save the photo, give a name (different from the original), select the format (JPEG) and click on "save". Thus, we ended up with two photographs: the original and a compressed copy.
If you do not need the original, then after you have selected the compression option and clicked “ok”, in the top toolbar go to "file" — "save"(without HOW) - the reduced image will be saved on top of the original, leaving only one photo on your computer's hard drive.
How to reduce the weight of several photos
Everything is absolutely the same, only at the beginning, when the photos from the folder are loaded into the program, select all the photos, not just one, by holding shift. And when saving, click on "save everything"- compressed copies will be saved on top of the original, so if you need to save the folder with the original dimensions, then create a copy of the folder in Explorer before loading it into the program.
How to compress a photo even faster
If you have the Microsoft Office Picture Manager program on your computer, then when you open any photo in Explorer, there are several programs to choose from. I just right-click on the photo I'm going to resize. A window appears:
I choose "to open with"— Microsoft Office Picture Manager — the photo immediately opens in the program. I go to the tab "drawing" — "compress pictures"- I choose for "web pages" — "ok". Then "save" or "save as". Takes very little time. That's it, the weight of the image is compressed several times!
Reduce photo online
To reduce the weight of photos online we will use the service webresizer.com, which will reduce not only images in jpeg format (regular pictures, photos), but also gif (animation), png (transparent background). The webresizer.com service has detailed, step-by-step instructions for setting up how to compress photos to any size and quality online, so that even a novice user can figure it out.
In the lesson " How to compress a photo"You will learn a way to compress photos without downloading additional programs and without using online services.
By tradition, we will describe our task:
What we have: The photo we need to compress. Let's say we want to send a photo by mail, but the photo is too large.
What do we need: installed Microsoft Office suite
In this lesson we will talk specifically about the installed Microsoft Office Picture Manager program (the examples use the Windows 7 operating system), which is already included in the Microsoft Office 2007 software package. You can find it in the Start menu -> All Programs -> Microsoft Office. The icon for this program in the start menu looks like this:
Figure 1. Location of “Microsoft Office Picture Manager”
With one click of the left mouse button we launch the “Microsoft Office Picture Manager”, the program window will open:
Fig 2. Window of the Microsoft Office Picture Manager program with a picture
There is an even faster option for opening photos in the Microsoft Office Picture Manager program. Find the photo that needs to be compressed:
Fig 3. Photo to be compressed
Fig 4. Another way to open the Microsoft Office Picture Manager program
Our photo will open in the program:
Fig 5. Photo opened in Microsoft Office Picture Manager
In order to compress photo Click “Change pictures...”:
Fig 6. Button “Change pictures...”
After this, on the right, an additional field with parameters for changing pictures will appear, press the button “ Compressing pictures»:
Fig 7. Button “Compress pictures”
After clicking on the “Picture Compression” button, picture compression parameters will appear in the same block. In the “Compress for” field, for the ratio of quality and volume, select the “documents” item:
Figure 8. Picture compression options
As we can see from the field below “Expected total size”, the original file was 398 KB and after compression the photo will “weigh” about 192 KB. Almost the photo is compressed more than twice. Photos with a larger size will have a higher compression rate; the difference in size will be more than 10 times!
After selecting the compression method, click on the “OK” button to start the photo compression procedure:
Fig 9. Click the “OK” button
After this, the program will perform the necessary actions to compress the photo; you can understand that the compression procedure is complete by the changed spelling of the name at the bottom of the program and the sign at the beginning of the file name “*”:
Fig 10. Mark for changing the image file
Now our photo is in a modified state, but the compression result has not yet been saved. To save changes in a photo, press the key combination on the keyboard “Ctrl + S” (this combination saves changes in almost all Windows programs).
That's it, the photo compression operation is completed and our file now takes up half the volume. Now we can send it by mail, post it on the Internet or save it to a flash drive.
