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Tip: If you use a laptop, you can create a banner or background that includes your contact information.

Using a full-screen background image can produce a dramatically different 'look' for rEFInd: This pixel's color is also used as the background color for submenu text, even for full-screen backgrounds. If the image is smaller than the screen, the color in the top-left pixel of the image will be used for the rest of the display. You can create a new background image and logo by placing an image file in rEFInd's main directory and passing its filename to rEFInd with the banner option in nf. If you have problems with a specific icon or banner image, check the libraries' pages and re-save or convert the image into a more generic form, or even to a different format. These libraries have certain limitations for instance, NanoJPEG, and therefore rEFInd, does not support progressive JPEGs.

REFInd relies on the LodePNG and NanoJPEG libraries for PNG and JPEG support, respectively.

rEFInd's BMP implementation does not support compression, so full-screen BMP images will be quite large.

On the other hand, ICNS supports multiple resolutions in one file, which can be desirable for icons.

Apple's ICNS format supports a limited range of sizes, all of which are square, not rectangular.

rEFInd's BMP and JPEG implementations lack support for transparency, which is highly desirable in icons, icon backgrounds, and fonts.

Specific file format limitations include: The demands of each type of image mean that certain file formats work best for it, as noted above however, you can in principle use any file format for any purpose.

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You might want to change just one or two elements-say, to add an icon for your OS or to change the banner or background.ДЄs noted in the Setting OS Icons section of the Configuring the Boot Manager page, rEFInd supports four image file formats: Apple's ICNS format, Portable Network Graphics (PNG) format, bitmap image file (BMP) format, and Joint Photographic Experts Group (JPEG) format. Of course, not all of these elements are likely to be included in all themes. If you don't like this font, you can change it to another monospaced font by using the font token in nf however, the font file is a simple image of the font's characters, which limits rEFInd's font capabilities.

fonts-rEFInd uses a 14-point monospaced sans serif font by default.

These elements are generally best done as PNG files.

Icon selection backgrounds-When an icon is selected, it's merged with a slightly larger selection icon, which you can change by specifying a new file with the selection_big and selection_small tokens in nf.

Icons are generally PNG or ICNS files, with the latter being a Mac-centric format and so less common. Alternatively, you can specify a new icons directory with the icons_dir token in nf. The vast majority of these icons are loaded from disk files and so are easily replaced without adjusting the nf file.

Icons-rEFInd uses icons for its OS and utility selection tags.

As a general rule, PNG and JPEG files work best for this element. A background is simply a banner image that fills the screen. rEFInd includes a built-in banner image that's used if you don't specify another image with the banner token in nf. The rest of the screen is filled with a solid color derived from the color used in the top-left pixel of the banner image. Banners and backgrounds-A banner is a logo or small graphical element that rEFInd displays horizontally centered in the top half of the screen.Theming BasicsД«roadly speaking, rEFInd's graphical elements fall into four categories: I conclude this page with pointers to a few themes that users have created for rEFInd. This page will help you get started in making such changes to each of the major sets of features: banners and backgrounds, icons, icon selection backgrounds, and fonts. This fact makes rEFInd's 'look and feel' highly adjustable even by non-programmers. REFInd relies on both built-in and external graphical elements in its user interface, and all of these elements can be replaced by user-specified files.

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