@boymax111 we have identified one issue that might have been causing you problems. It is now resolved. Can you please confirm, that it works for you? If not you can alternatively try using Opera Mini in J2ME emulator.

First of all, I am really sorry about your wasted data plan. The good news is that we have identified an issue affecting some subset of Android phones and the fix is on the way. Can you please try to install Opera Mini beta 35.1 from Google Play and check if it works for you with High mode? A confirmation that it works would be very helpful for us.

Ok, I can see the problem on my device too. I thought that you have such problem with almost all texts, but it turns out it affects some specific elements. We will try to fix this. Thank you for reporting!

If you try to gzip all the text that is on the page, you get 44kB of data. You could possibly go below with some different compression algorithm, but not very much.

Opera Mini compression will be visible more likely on some more advanced pages with CSS, JS, images etc. On the page provided, there's simply not much that can be compressed.

It looks like you have Single Column View enabled. Does it help when you disable it? Have you tried restarting the browser, does it make a difference? Is this beta?

It just automatically chooses High or Extreme mode based on website, country, Android version and possibly other factors as well.

Have a look at Opera Mini and JavaScript article. It contains guidelines for detecting Opera Mini servers (which power Extreme compression mode).

First of all we are really glad to help webdevelopers in making their sites work good in Opera Mini.

The main difference between High and Extreme mode is that High mode uses WebView component for displaying web pages, so standards support depends on Android and WebView version in such case. In Extreme mode pages are rendered using Presto engine on Opera Mini servers. The same servers are used for J2ME, Symbian and other Opera Mini clients - as a result rendering should be similar between such clients (although not exactly the same). You can learn more on "Opera Mini and JavaScript" article on dev.opera.com.

In general CSS support is really similar to what you have in Opera 12.16/12.18 so you can test your site first in old Opera desktop browser as it's probably much faster way to develop. There are some exceptions and differences:

• in most cases possible font-sizes are limited to some subset, I described it in detail in another topic, notably this subset differs between devices,
• line-height is disabled at the moment, though we consider enabling it in the future, so please don't make assumptions on this,
• padding should work fine,
• elements with position: fixed are rendered as they were with position: absolute - they don't stick in viewport when you scroll,
• no CSS transitions, limited transforms support,
• broken complex flexbox-based layouts, simple things may work,
• some other minor things.

Regarding tests you can perform at css3test or w3c sites: they show what the engine supports, but a lot of things are changed on transformation to OBML.

If you have any specific issues you can always post your page or example problem here and I can assist on possible solutions/workarounds.

Allowed font sizes are indeed trimmed to some subset (which may vary between devices). In normal case you should see a difference between 12 and 19px though... Don't you have "Single column view" enabled in settings? If this is the case, then very likely page layout (including font sizes) is pretty broken.

If text hierarchy is really important to emphasize in your case, then you have few options:

• try wider scale of font sizes, maybe just this 12 and 19px was an unfortunate pick,
• use color scale to achieve hierarchy,
• use bold text to emphasize text that would normally be slightly bigger.

If you care more about your website looking great, then you need to understand that typically websites look slightly worse in Opera Mini and our users are often used to this. If your page is readable and usable in Opera Mini, but doesn't look great, maybe that's still enough?

In any case, please note that the same page might render in different way on different devices. Especially we are working on font rendering in new clients, so actually this part might change soon (you might have a look at your page using Extreme mode in Opera Mini beta).

Thank you for reporting this. This happen is other browsers as well, so there is some issue on Facebook side. I will report it to them. Do you know when this started happening?

For now, you can simply attach photos by clicking "Comment" button next to "Like" and "React" button, it should open photo upload form, which works well.