September 8th, 2015
Today, we released Opera Mini 11 for Android. It has two modes. By default, it starts in Extreme-compression mode. This is the traditional Opera Mini compression that can reduce a site down to 10% of its original size, using the Opera Presto rendering engine on a proxy server.
This release adds a new compression mode we’re calling “High-compression” that is fully web-compatible. (You can turn this on by tapping the red “O” and choosing “Savings mode” next to the Savingsometer.)
The actual rendering depends on the WebView component on the Android device. Older devices will have a WebView based on WebKit; more recent devices are Chromium-based, and from Android L, the WebView component is auto-updated.
Modes in other Opera products
Other Opera products have user-selectable rendering modes. See Opera Browsers, Modes & Engines for more information.
In beta versions of Opera Mini 11 for Android, High mode was on by default. We changed it after feedback that sites appeared “broken” because they didn’t render as people had come to expect from Opera Mini. It’s a good reminder that regardless of how you think your sites should look, your users know best; it’s their browser, and their choice.