Sure, no problem! On Fri, Dec 16, 2022 at 5:18 PM Mike Taylor <[email protected]> wrote:
> Hi Steve, > > Thanks for the info - would you mind filing a bug at > https://bugs.chromium.org/p/chromium/issues/entry?components=Blink%3ENetwork%3EClientHints > ? > > thanks, > Mike > > On 12/16/22 3:53 PM, 'Steve Kamerman' via blink-dev wrote: > > Hi all, > > I've been testing client hints and I noticed that the *viewport-width* > and *dpr *hints are not the same in all contexts. The page itself, > first-party subresources, third-party subresources and third-party images > all get potentially different values on the same device. I've tested this > on Chome Dekstop 108 and Chrome Mobile 108. > > Here's the test page that I've written: https://cute-easy-flag.glitch.me/ > > Note that the *viewport *meta tag is not enabled by default, but you can > enable it at the bottom (along with *accept-ch, critical-ch and > delegate-ch* so you get all the hints). > > In particular, the "*First Party*" and "*Third-Party Image*" tests do not > match the other two. I don't know if this is a math problem (failing to > consider the DPR, for example), or what. > > The attached images show the results on my Samsung Galaxy S21 Ultra 5G and > Chrome Desktop. > > We rely on the accuracy of these values, particularly in the "*Third-Party > Image*" context, to optimize images within our Image CDN. > > According to my understanding, the values in my screenshots must be a bug > since it is impossible to recompute the actual width of the viewport in > pixels. > > Thanks, > > Steve Kamerman > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/26b38f6a-6ccc-4311-ae92-465c251526adn%40chromium.org > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/26b38f6a-6ccc-4311-ae92-465c251526adn%40chromium.org?utm_medium=email&utm_source=footer> > . > > > -- Steve Kamerman Chief Operating Officer Co-Founder | ImageEngine & ScientiaMobile 817-504-4744 [email protected] imageengine.io -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAGr%2BtDy2E1R-Yy7xNfVpgQxC6vv-bw7%3DauyoaXOpAFrEFKCNRQ%40mail.gmail.com.
