Partial correction. In the Go App, the webviewer sizes with the full page within the window automatically. In Pro, the window will require sizing or zoom to window size. How can this be done?
two questions here:
1. how can I resize a layout object (Web Viewer) to fit the width of the window (resizing)
2. how can I resize the image to fit inside the Web Viewer (that may resize)
Q: how is the image called for Web Viewer?
A: if a SYTLE attribute can be added, it can be set to 100%
but possibly that's not needed, or is already done?
3. Is the URL referring "an image" or "web page" ? It looks as web page, seeing your URL have only IP address (server host) part.
4. This is same as beverly wrote, do you have control of the web page? Or, does the web page work if embedded in iframe?
Usually browsers on computers show web page as defined size, not automatically resize it. Web viewer in FMPro does the same. Browsers on devices that have small screen may shrink for usability.
note: the Pro version is run from a Windows operating system and Go from iOS. Not sure if this has anything to do with the issue.
If the web page is yours, add CSS like as
for Windows FMPro web viewer. Then the page contents is rendered in 640px and zoom to web viewer. The value should be what the best for your page contents.