Tag: pictures

The structure of the magick command (ImageMagick)

ImageMagick Tools This post contains hints on how to use “magick”: selecting frames or areas of an image, types of options, output file numbering, color names, how to specify a transparent color. The “magick” utility is part of the ImageMagick package. For details on installing ImageMagick, including which dependencies need to be installed to support the maximum number of formats,...

How to convert a large number of images to another format

Bulk image conversion The article “How to convert images to any formats in Linux” shows how you can easily convert an image from one format to another using the magick program (hundreds of formats are supported). The “magick” utility is part of the ImageMagick package. For details on installing ImageMagick, including which dependencies need to be installed to support the...

How to reduce image size. Bulk photo scaling and resizing on the command line

How to reduce image size You can reduce the image size in several ways: 1. Select lossy image encoding format (JPEG) 2. Increase the level of image compression (for images compressed with loss of quality, this will lead to a deterioration in the appearance of the image, for images compressed without quality loss, this will mean longer processing of the...

How to check JPG quality level (SOLVED)

This post is about how to find out the quality of a JPG image, as well as other image properties, such as the number of unique colors used in the file, image depth, and other detailed information about JPG and other formats. How to know the quality of a JPG? Is it possible to determine the JPEG quality level? When...

How to enable saving photos in HEIC (HEIF) format in Android and whether it should be done

As an alternative to JPEG, modern phone cameras offer saving images in the HEIC (HEIF) format. Moreover, in iOS, the camera uses HEIC (HEIF) formats by default, and if you do not want to save your photos in these formats, then you can disable this feature. Android phone cameras also support this format, but it is not used by default....

Why images are distorted in photographs and parallel lines become converging

I noticed that the photos taken by the Android phone, namely the Samsung Galaxy S21 Ultra models, are very distorted. Distortion is especially noticeable on parallel lines (such as the sides of a building) and on people's faces. For example, In the photo above you can see that tall buildings seem to grow in different directions, although this is certainly...

How to convert images to any formats in Linux (SOLVED)

Universal image converter for Linux Linux has ImageMagick, which supports hundreds of image formats and can convert an image from any format to any other. The “convert” and “magick” utilities from the ImageMagick package do an excellent job of converting images (JPG and other formats). For details on installing ImageMagick, including which dependencies need to be installed to support the...

magick and convert troubleshooting (ImageMagick package)

The magick (convert) utilities from the ImageMagick package are used to convert and modify images. The magick (convert) commands have many options, although in their basic use, for example, to convert from one format to another, you can do without options at all. Despite the seeming ease of using the magick (convert) utilities, when using them, I encountered a variety...

How to convert .webp images to GIMP

What are .webp files Files with the .webp extension are image files in a format developed by Google. To date, the WebP format has not been widely used, but it is supported by many web browsers and image viewers and editors. How to Open WebP in GIMP Recent versions of GIMP support WebP format (previously a special plug-in was required)....

Batch image processing in GIMP

In addition to creative work with images in GIMP, sometimes you need to do fairly simple things, but with a large number of files. Sometimes even with a very large number of files. Such actions are called “Batch File Processing” or “Batch Image Manipulation” when the same operation is performed on multiple images. Such an operation can be converting, resizing,...
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