Twitter is rolling out a server-side update to its iOS and Android apps that will allow higher-quality uploads from the platform while also changing how images appear on the timeline.
Both apps now support uploading images in 4K resolution. This likely refers to the 4096 × 4096 pixel limit, the same resolution as the one when uploading from the Twitter web. Previously, the limit was 2K or 2048 × 2048 pixels.
Have a collection of higher res photos waiting to be shared? We’re testing ways for you to upload and view 4K images on Android and iOS.
If you’re in the test, update your high-quality image preferences in “Data usage” settings to get started. pic.twitter.com/EgW5fsb8Z8
— Twitter Support (@TwitterSupport) March 10, 2021
To enable uploading in a higher resolution, you need to go to Settings and privacy> Data usage> High quality image upload and set it to Cellular data & Wi-Fi or Wi-Fi only from the default Never. This will cause the application to compress the image less before uploading, which will increase the final resolution of the image but will also increase the upload file size and the time it takes to upload the file.
Display images in the timeline
Twitter also changes how images appear on your timeline. The default preview is always landscape regardless of the orientation of the image and Twitter uses machine learning algorithms to produce a suitable preview image that places the subject in the window. Now, the app will only show the full image in the timeline.
Unfortunately, it seems the company is still doing very little to improve the poor video quality of the app, which currently tops 720p and uses very aggressive compression. Of course, video is much more data-demanding and switching to a higher quality may not be easy, at least not without switching to more efficient codecs like AV1 or VVC in the future.