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PNG to WEBP

Convert .PNG into .WEBP Files - Fast, Free and Secure. We also have information of .PNG and .WEBP Files extensions on this page.

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Information about PNG
File extension
png
File category
Raster image file
Stands for
Portable Network Graphics
Developer
PNG development Group(Donated to World wide web Consortium/ W3C)
Overview
These files are commonly termed as ‘ping' and they store the raster files using lossless compression. It came into existence in order to replace the GIF file format as they both have the ability to show transparent backgrounds. Furthermore, it was an enhanced and improved version of Graphics Interchange format. It supports different types of photos. The first one is palette-based photographs that can either have palettes of 24-bit RGB or 32-bit RGBA colours. Second is grayscale images which may or may not have an alpha channel for transparency. Lastly, there is a full-colour non-palette which is based on RGB/RGBA pictures. There is one limitation of this type. It does not support animation like GIF. Besides this, it is non-patented which means there are no copyright limitations.
Technical description
The expanded features like 8- bit channel for transparency and 24- bit RGB support make PNG more popular. The files stores in this format allow the fading of colours from opaque to transparent which is not present in the preceding format. CMYK does not offer support to this extension as it was developed for transferring of files over the internet, not for professional-quality print graphics. It stores information like textual comments, integrity checks and encoded basic pixels in its extensible structure of chunks. It always starts with an 8-byte signature followed by a series of chunks. A chunk furthermore comprises of four parts- length (4 bytes), chunk type (4 bytes), chunk data (length bytes) and CRC- Cyclic redundancy checksum or code (4 bytes).
Links
wikipedia.org
Information about WEBP
File extension
webp
File category
Raster Image file
Stands for
Google Web picture files
Developer
Google
Overview
WebP is a file format which uses both lossy and lossless compressions to encode the files. It was developed by Google in order to facilitate the work online which can be done quickly and easily with this extension. This is a sister project of WebM Multimedia container and it produces high quality of images. It is claimed that it can reduce the file size by 34% without affecting the quality of a photo. Due to this reduced size, online work can be done in less time as these files can offer high speed over the Internet due to small size. This format provides add-on support to the lossless algorithm, metada, transparency, colour profile and animation.
Technical description
Intra frame coding that is used in video format and the resource interchange file format, are base for its lossy compression. Only 16,383 pixels can be used to represent the side length of an image. Besides this, it is based on block prediction in which every block is forecasted as per the values, from the three blocks above it and from a one block to the left of it. Horizontal, vertical, DC (one colour) and Truemotion are the four basic modes of block prediction in this extension. Animated images can also be produced using WebP and this is a substitute to famous GIF format. It comes with many improved features. For instance, 24 – bit colour with transparency, joining of frames with both lossy and lossless compressions in the same animation and providing support to seek to a specific frame.
Links
wikipedia.org
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