The most modern screens are OLED. These screens boast some really great features like pure blacks, and are marketed as 3x scale. However, nearly no "3x scale" OLED actually has perfect 3x3 pixels per dot on their screen.
因為螢幕不是真的到 3x 的要求,丟 2x 的圖片出去就好,省頻寬又省下載時間:
This means that most OLED screens that say they are 3x resolution, are actually 3x in the green color, but only 1.5x in the red and blue colors. Showing a 3x resolution image in the app vs a 2x resolution image will be visually the same, though the 3x image takes significantly more data. Even true 3x resolution screens are wasteful as the human eye cannot see that level of detail without something like a magnifying glass.
省下 38% 的資料量,32% 的時間:
There's no difference that the human eye can see, but will save 38% on data and 32% on latency on the capped image load for this particular example which is reflective of most images that load on Twitter.
When you’re working with teammates over a Slack video call, you may have something — a document, a chunk of code, the latest designs — that you want to share with your team. Now you can. Screen sharing is now available across teams on Slack’s paid plans.
需要使用 Windows 與 Mac 版的 desktop 處理:
Screen sharing is rolling out over the next few days to paid teams on the latest versions of our Slack for Mac and Slack for Windows desktop apps.