Advice 1: How to change image size

Each graphic file has a size calculated in terms of two parameters: the amount of file size and image resolution. Without visual quality loss can be reduced as the volume of photos and resolution.
Instruction
1
To change the volume required to "degrade" the quality of the image or picture, but this "impairment" will not be noticeable when viewed on screen or in printed form. For the quality of the computer generated image meets the format and quality level (quality), which is measured in percent.
The most compressed formats that have the least amount of formats JPG (JPEG) and PNG, and PNG does not have settings for “quality”. Have PNG there is only the setting of bit mode (256 – bit by default, equal to 100% quality in JPG format, but in the amount can win it).
Also very large resolution on a normal monitor too, to anything – therefore pointless to use as Wallpaper or stored in the home archive images, for example, 6000x8000 pixels, if the screen resolution is 1920x1280. Of course, higher resolution allows you to enlarge small objects in the photo, but if you are hesitate computer graphics professional, the picture resolution can also be reduced to free up space on your computer's hard drive.
2
To change the format, the visual quality and image resolution will help free program Paint.NET. Paint.NET is not a product that comes with Windows, unlike regular Paint. Paint.NET can be downloaded for free on the Internet, the program is constantly updated, supports Russian language, and has a nice interface. Distribution Paint.NET weighs about 100 times less than the distribution of Adobe Photoshop, so the program downloaded quickly and take up almost no space on disk.
3
After starting Paint.NET drag the graphics file in the working window of the program. The picture opens in the editor. To change permissions, select the top menu "Image" - "resize". In the appeared window adjust the resolution of the new image to your taste. Don't forget to tick the "Maintain aspect ratio". After entering the desired resolution, click “OK”.
4
Now we need to change the image format and the level of “quality”. To do this, select all in the same top menu "File" - "Save as". Enter a new file name and select file type “JPEG,” then click “OK”.
A popup window will appear asking you to specify the quality. On your right, you will see how to visually changing the image quality (preview) and final file size. As you can see, between the quality of 100% and 95% in JPEG format is almost not distinguishable to the human eye the difference and it allows you to save disk space. After setting up the level of quality click "Save". The image is saved.

Advice 2: How to reduce image without losing quality

Quality and colorful pictures usually have a large volume, which is invalid in the case of posting photos online. However, everyone wants to put in a social network or photo sharing site footage that has not lost its quality after reducing the size. Learn how to optimize photos for Internet publications so that their quality is not affected after changes — for this you need Photoshop.
Instruction
1
Upload a photo in Photoshop, and then adjust its color, saturation and contrast if necessary. Tratorious frame, open the menu Image -> Image Size to bring up a new window change the image size.
2
The window will display the original size of the original frame, which can be any. In order to change the size, enter your desired numbers in the fields Width and Height. The program automatically determines the proportional size of the frame, so it is enough to enter only the height or only the width of photos — for example, 800x600 or 1024x768.
3
After the file is reduced in size, open the File menu and select the option "Save for web". So, Photoshop yourself will optimize your photo for the network of publication and will not be reduced only to its real size, but the volume in kilobytes.
4
Select in the settings window when you save the item in JPEG High. Look at the size of the photos and if you're satisfied, click "Save". If the size does not suit, move right or left the slider settings, while the volume of the frame will not match the expectations.
5
Save the photo under a new name that better is to write Latin letters for the correct display on the Internet. Now you can publish it on any Internet site, and when uploading photos, even users with slow Internet channel will have no delays.
Note
Try to save the image in PNG format and compare the sizes of received files.
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