12/21/2023 0 Comments .bmp to .png compressorThis image file type has raster graphics data (pixels rather than vector) that is independent of display devices, meaning that a BMP file can be viewed without a graphics adapter. Bitmap image files (.bmp) are uncompressed or compressed with a lossless compression.PNGs can, therefore, provide a noticeably better-quality image than a JPG and the layers of graphics in the image can be kept separate from each other, but this comes with a trade-off being the larger size of the file. PNGs, however, have a lower compression rate than JPGs, so can be bigger (in terms of KB size). PNGs provide a much better-quality alternative to GIFs but, like JPG files, PNGs can be used for all photos and images that require cleaner, clearer detail. A PNG file is an example of lossless compression that provides a high-quality image.GIF files can also be used where transparency of part of the graphic is needed. This means that they are not best suited to photos, but rather for saving images like charts, diagrams, simple images, and simple animations. GIF files have lossless compression (depending on settings) but a maximum 8-bit colour depth (limited to a palette of 256 colours). JPG files (often used in digital camera images) have lossy compression but a relatively high quality for the size of the image and as such, are used for photos and more detailed images on websites. JPG and GIF files are both used on the Web.Comparisonĭifferent optimsed/compressed file types have different qualities and uses. Examples of lossless compression file formats include RAW, BMP, PNG and GIF (depending on settings). This type of compression squeezes the file without removing data so that the picture quality remains the same, and the file can be decompressed to its original quality. Examples of lossy compression file formats (bitmaps) include JPG, and GIF (depending on settings).Ģ. This means that, once a file has undergone lossy compression, increasing the dimensions of the file shows a pixelated/blurred version because data/pixels were stretched and made into larger blocks to make the whole image smaller and compressed. This reduces the file size by permanently reducing data. There are two types of compression for image files. Compressing image files, therefore, means changing attributes such as the dimensions, the resolution (dpi), the bit depth (the number of bits used to represent each pixel in an image), and setting the file type e.g.jpg. smaller in size and in compressed formats) take up less storage space and are quicker to download when part of a website. This generally means creating a balance between retaining visual quality while shrinking the size of the file. Image files for use on the Web need to be ‘optimised’. Using image files on the web, however, requires optimisation. Examples of bitmap file formats include BMP (Bitmap), JPG (jpeg), PNG, GIF, TFF (pronounced tiff) and EXIF (exchangeable image file format). BMPīitmap images are made from a grid pattern of coloured squares known as picture elements/pixels. Examples of vector file formats include EPS (encapsulated postscript), PDF and SVG (scalable vector graphics). Vectors can be re-opened and re-edited in graphics programs as they can be scaled without losing resolution. Vector image files are often used for creating logos, illustrations, and print layouts in programs such as CAD packages, Microsoft AutoShapes, Blender, Adobe, and more. Bitmaps are made from pixels whereas vectors are made using mathematical formulas, co-ordinates and geometry. Raw, digital image files start as either vectors or bitmaps/rasters/pixel maps. In this article we look at image optimisation, the different types of compression and image files, and how files different file formats can be compared and best used. Business Resilience and Disaster Recovery. ![]() 3CX VoIP specialised modules and bespoke applications.
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