Test image compressed using version 0.30 lossy WebP compression at quality 75 with accompanying RGB histograms. Note the breaks in the histogram of the compressed image compared to the source. As a derivative of the video format, it is a sister project to the multimedia container format. WebP-related software is released under a. The format was first announced in 30 September 2010 as a new for lossily compressed true-color graphics on the web, producing smaller files of comparable image quality to the older scheme. On October 3, 2011 Google announced WebP support for animation,, metadata, and tiling (compositing very large images from maximum 4 tiles). Read, Write and Edit Meta Information! Also available--> Utility to fix Nikon NEF images corrupted by Nikon software. Jun 16, 2017. Soft 'WebP File Size Reduce Software 7.0' description: Compress multiple WebP images and reduce the amount of disk space they take up in one easy operation, with this helpful application. Download link. On 18 November 2011 Google began to experiment with and support for () in both lossless and lossy modes; support has been enabled by default in libwebp 0.2.0 (16 August 2012). According to Google's measurements, a conversion from to WebP results in a 45% reduction in file size when starting with PNGs found on the web, and a 28% reduction compared to PNGs that are recompressed with and. Contents • • • • • • • • Animated WebP [ ] Google has proposed using WebP for animated images as an alternative to the popular format, citing the advantages of 24-bit color with transparency, combining frames with lossy and lossless compression in the same animation, and as well as support for seeking to specific frames. Google reports a 64% reduction in file size for images converted from animated GIFs to lossy WebP, and a 19% reduction when converted to lossless WebP. Technology [ ] Simple WebP Bytes Content 0- 3 R I F F 4- 7 length+8 8-11 W E B P 12-15 V P 8? 16-19 length (padded) 20- VP8 key frame pad? (even length) WebP's lossy compression algorithm is based on the coding of the video format and the (RIFF) as a. This software offers a solution to users who want to compress the files size of one or more WebP files. The user simply adds the required files or an entire folder. Jul 25, 2016 On the whole, WebP File Size Reduce Software is a useful program that can help you batch compress WebP images. It is mainly aimed at less experienced users, as it offers a limited number of customization options, and it features a somewhat outdated interface. By default, the image format is determined by its magic number, i.e., the first few bytes of the file. To specify a particular image format, precede the filename with. As such, it is a block-based transformation scheme with eight bits of and a with by a ratio of 1:2 ( 4:2:0). Without further content, the mandatory RIFF container has an of only twenty bytes, though it can also hold additional. The side length of WebP images is limited to 16383 pixels. WebP is based on block prediction. Each block is predicted on the values from the three blocks above it and from one block to the left of it (block decoding is done in raster-scan order: left to right and top to bottom). There are four basic modes of block prediction: horizontal, vertical, DC (one color), and TrueMotion. Mispredicted data and non-predicted blocks are compressed in a 4×4 pixel sub-block with a or a. Both transforms are done with to avoid rounding errors. The output is compressed with. WebP also has explicit support for parallel decoding. The consists of converter software in the form of a program for Linux (cwebp) and a for the decoding, the same as for WebM. The open source community quickly managed to port the converter to other platforms, such as Windows. WebP’s lossless compression uses advanced techniques such as dedicated entropy codes for different color channels, exploiting 2D locality of backward reference distances and a color cache of recently used colors. This complements basic techniques such as dictionary coding, Huffman coding and color indexing transform. Support [ ] Amongst web browsers,, and natively support WebP while has announced plans to implement WebP natively in. All -compatible browsers can also display WebP via a JavaScript. WebP can also be displayed in all major browsers using the WebPJS JavaScript library, although support in Internet Explorer 6 and above is achieved using. Amongst graphics software, (from version 3.9),,,,,, and Aseprite all natively support WebP. Telegraphics has released a free plug-in that enables WebP support in. The plugin was last updated in 2013 so it saves using an older revision of the WebP format. A more current beta Photoshop plugin has also been released by fnordware. And support WebP via plugins. Google has also released a plug-in for Microsoft Windows that enables WebP support in,,, and any other application that uses. Linked with the VP8/VP9 reference codec library can extract VP8 key frames from media and a script can then add the WebP header and the NUL pad byte for odd frame lengths. Meanwhile, FFmpeg supports libwebp directly. And (both Google ) support WebP. Support for WebP is also planned for. The Instant Previews feature of currently uses WebP internally to reduce disk space used by previews. 4.0 supports encoding and decoding WebP images (via bitmap and ). SDL_image supports the format since 1.2.11. Uses WebP for their Stickers, claiming they are displayed 5 times faster compared to the other formats usually used in messaging apps. In early beta versions of macOS Sierra and iOS 10, Apple added WebP support. In the GM seed versions of iOS 10 and macOS Sierra released 7 September 2016, WebP support has been removed. Restrictions [ ] Like VP8 on which it is based, former lossy WebP only supports 8-bit YUV 4:2:0 format, which may cause color loss on images with thin contrast elements (such as in and ) and ghosting in. To overcome this restriction, new lossless WebP supports VP8L encoding that works exclusively with 8-bit ARGB color space. Criticism [ ] In September 2010, Fiona Glaser, a developer of the encoder, wrote a very early critique of WebP. Comparing different encodings (JPEG, x264, and WebP) of a reference image, she stated that the quality of the WebP-encoded result was the worst of the three, mostly because of blurriness on the image. Her main remark was that 'libvpx, a much more powerful encoder than ffmpeg's jpeg encoder, loses because it tries too hard to optimize for ' (peak signal-to-noise ratio), arguing instead that 'good are more important than anything else for compression.' Pascal Massimino, developer of the cwebp encoder, reports improvements to the WebP encoder with a number of defects resolved since the preview releases. As WebP (and the WebM standard upon which it is based) is an open-source format under active development, issues can be expected to both resolve and regress as they are addressed on an ad-hoc basis. In October 2013, Josh Aas from Mozilla Research published a comprehensive study of current lossy encoding techniques and was not able to conclude WebP outperformed JPEG by any significant margin. Retrieved 1 October 2010. • ^ Rabbat, Richard (30 September 2010).. Chromium Blog. Retrieved 1 October 2010. • Zern, James (28 November 2017).... Retrieved 30 November 2017. Retrieved 1 October 2010. Retrieved 6 October 2010. • Calore, Michael (1 October 2010).... Retrieved 5 October 2010. • Shankland, Stephen (30 September 2010).... Retrieved 1 October 2010. • Paul, Ryan (2 October 2010).... Retrieved 5 October 2010. • Rabbat, Richard (3 October 2010).... Retrieved 11 March 2011. Archived from on 4 October 2010. Retrieved 1 October 2010. • Arora, Vikas (3 October 2011).... Retrieved 18 November 2011. • ^ Alakuijala, Jyrki (30 August 2012).. Google Developers Blog.. Retrieved 6 September 2012. • Zern, James (16 August 2012).... Retrieved 6 January 2017. • Alakuijala, Jyrki; Arora, Vikas; Joshi, Urvang (18 November 2011).. Google Code Blog.. Retrieved 18 November 2011. Retrieved 2014-02-23. • ^ Glaser, Fiona (2010-09-30).. Diary Of An x264 Developer. Archived from on March 19, 2015. Retrieved 2010-10-01. Retrieved 2010-10-02. • Metz, Cade (2010-09-30).... Retrieved 2010-10-03. • Ødegaard, Ruarí (2011-03-15).. Opera Desktop Team. Opera Software ASA.. Archived from on 2011-03-17. Retrieved 2011-03-15. • • Brinkmann, Martin (2016-08-24).. GHacks Technology News. Retrieved 2016-08-24. Retrieved 2010-10-11. Blog: this title probably isn't very original. Retrieved 2011-05-24. Retrieved 2011-11-20. Retrieved 2013-10-05. • David, Chartier (2010-10-04).... Retrieved 2010-10-05. ImageMagick Studio LLC. Retrieved 2011-05-24. Pierre-Emmanuel Gougelet. Retrieved 2014-01-06. GDAL - Geospatial Data Abstraction Library. Retrieved 2011-11-30. Retrieved 2016-03-28. Free plugins for Photoshop & Illustrator. Retrieved 2011-05-23. Retrieved 2015-06-29. Retrieved 2016-03-30. Retrieved 2013-05-18. WebP website.. Retrieved 2011-05-24. Retrieved 2011-05-20. • • • Stephen Shankland (2016-07-19).. Retrieved 2016-07-20. • Google (November 2011).... Retrieved 2014-01-21. Retrieved 2014-01-21. Mozilla Research Blog. Retrieved 2014-09-10. Mozilla Research Blog. Retrieved 2014-09-10. External links [ ] Wikimedia Commons has media related to. 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Out of these encoded or residual values, many are null or zero and this phenomenon contributes in further decreasing the size of the WebP image. Hence, the WEBP lossy compression — like JPEG — is based on block prediction. Support and Usage Google Chrome and Opera both natively support WebP. Amongst graphics softwares,,,,,, XnView, and GDAL all natively support WebP. Has begun using WebP to lower its network costs and speed up its web site. Even relatively small efficiency wins start to add up at Facebook's scale. When people upload JPEG/JPG images, Facebook automatically makes copies in WebP format. They've now apparently begun delivering those images to people using Chrome and Opera. Too has started using WebP for it's popular stickers. The Instant Previews feature of Google Search uses WebP internally to reduce disk space used by previews. The major problems arise when a person wants to view the image in software other than a web browser or make edits to it as majority of the most popular graphics applications — including Window's or OS X's image viewer and Photoshop — can't natively handle WebP. In October 2013, Josh Aas from Mozilla Research published and wasn't able to conclude that WebP outperformed JPEG by any significant margin. However, Telegraphics has released a free plug-in that enables WebP support in Adobe Photoshop, GIMP and Paint.NET support WebP via plugins. Google has also released a plug-in for Windows that enables WebP support in Windows Photo Viewer, Microsoft Office 2010 and any other application that makes use of Windows Imaging Component. Benefits and Statistics Google's WebP documentation claims: WebP lossless images are 26% smaller in size compared to PNGs. WebP lossy images are 25-34% smaller in size compared to JPEG images at equivalent SSIM index. WebP supports lossless transparency (also known as alpha channel) with just 22% additional bytes. Transparency is also supported with lossy compression and typically provides 3x smaller file sizes compared to PNG when lossy compression is acceptable for the red/green/blue color channels. Conversion to WebP WebP's documentation provides access to a pre-compiled software for converting PNG and JPEG images to a WebP image. You can read more about it and download it from. Here is the to an online converter which accomplishes the task without downloading any software. Making WebP Stickers For Telegram We have talk about WebP enough. Let's bring our knowledge of WebP to some constructive and creative use. We will look at how to make stickers for Telegram from a JPEG image and convert it to a.webp file. We're going to make our sticker from the following image. We would be making use of Photoshop to make the image background transparent. We would do that by choosing 'Background Eraser Tool'. We would also crop the image since it is quite big! Next we will select the current layer and apply Blending Options (stroke) on it and select white color. Also, ew need to select Drop Shadow to create a subtle shadow effect and I save it in PNG format. Finally we will use the online converter to convert the image to.webp format and our sticker is ready! You can make many other stickers in a similar fashion for distribution amongst your friends on Telegram. Conclusion WebP is an emerging image compression format and being backed by Google, Facebook, Opera and Telegram has certainly boosted its popularity. It's a format that already has a healthy collection of fans along with as detractors. However, being able to pack the goodness of GIF and PNG into one format with a reduced image size will continue to tempt web developers to create smaller and richer images. And if that helps make the whole web faster, we all win. WebP about 4.5 years old and still has low adoption. If WebP accounts for all the “other” images as measured by the HTTP archive, its adoption is only at 2%. And this isn’t a problem exclusive to image formats. SPDY is about 5.5 years old and its adoption is at ~1%. This is despite over 50% of web servers and web browsers supporting SPDY natively. On top of that, there is also more to deploying these technologies than mere software support. WebP has caused serious problems with caching due to content negotiation in the past. Facebook experienced lots of complaints when it turned on WebP in 2013, even when the browsers, network infrastructure, and servers all functioned perfected. Hopefully this format continues to improve. I must admit, this format is a new one on me. But I do think the web needs another image format that uses lossy compression and supports alpha. PNG is a great format for the web, but not is all cases. On images with a lot of flat colour, like logos, graphics, charts, cell-shaded cartoons, png offers very efficient compression, with the flawless quality of being lossless and the added bonus of an alpha channel. That makes it good for things like logos and icons. Though svg is rightly taking over in these cases. But where png falls down is images with more detail and variation in colour and tone, such as photos, paintings, CGI renders, etc. The lossless compression is less efficient then. Of course we normally just use a good old jpeg for photos and suchlike, but when you want alpha on one of these type of images, jpeg is not an option, and the png can end up with a file larger than we would like on the web. For this reason I would welcome a new format that offers jpeg-like lossy compression and alpha at the same time. I've not tried webP yet to see how it performs, so can't say if it's what I'm looking for. But the big thing putting me off is the lack of support in browsers. It looks like a no-go in IE, Firefox and Safari, which is a shame.
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