Tagged With compression


There's not much competition when it comes to compression utilities: 7-Zip is king of the hill. If you have it installed, but haven't updated in a while, grab version 18.05 right now. The latest official release, it contains a bunch of speed improvements so archiving is that much snappier.


When you embed any static image onto Twitter, it tries to compress it down as a JPEG to save bandwidth. For photos, that's usually fine; JPEG was designed for photos. But digital art, infographics and screenshots usually look their best in the PNG image format. If you upload those as PNGs, Twitter will still compress them into JPEGs and they might come out crappy. Here's how to fix that.


Despite many alternatives offering their services, the JPEG image format remains king. Seeing as it's unlikely to be supplanted anytime soon, companies such as Google and Dropbox have been working hard to squeeze every last byte out of its compression abilities. For Dropbox, the solution was Lepton, delivering images 22 per cent smaller with no quality loss. Now Google has its own option -- Guetzli. And you can try it yourself right now.


Gruntier video cards. More powerful CPUs. Higher resolution displays. All this stuff is really important when it comes to enjoying quality 3D experiences, be it video games or virtual reality. But none of it matters if it takes 400 years to download those experiences. Hence why companies such as Google spend a lot of time researching new ways to compress data. Now Google has a new compression library for 3D models -- called "Draco" -- and it looks very promising.


Dear Lifehacker, I'm running out of hard drive space because I have an enormous collection of photos. Apart from getting more storage or culling some pictures, the other option I've been thinking about is converting all my images to the WebP file format. It looks like it could compress down to somewhere between 40 to 60 per cent of the original size. Is this a good idea?


Google recently open-sourced "Zopfli", a new, optimised implementation of the Deflate compression algorithm. Deflate is not only the default compressor for ZIP files, but the de facto standard when, well, deflating web pages, scripts and other text files for transmission over the internet.


As long as you don't mind breaking compatibility with older browsers and have no need for animation, the Portable Network Graphic (PNG) has replaced the Graphics Interchange Format (GIF) as the preferred transparency-supporting lossless image format of the internet. Over the next few weeks, we're going to explore the different ways you can optimise the size of PNGs while compromising little on quality.


If you download videos with BitTorrent, you've probably come across a few that are compressed inside an RAR file, which can be a bit of a pain. It turns out, however, that you can easily watch RAR-compressed videos in VLC without extracting them.


Windows: RIOT, or Radical Image Optimization Tool, compresses your images as much as possible without turning them into a horribly pixelated mess. The app gives you a side-by-side view of the original and the compressed version so you can see how the final image will appear.