Can I search images on Safari using a text in the text field on a third-party app using shortcut?
One is welcome to invoke shortcuts or other automation techniques to do so, but here are my approaches:

Select the word: hold on it, and tap &quot;select&quot;. Then the tooltip menu changes to &quot;cut&quot;, &quot;copy&quot;, &quot;lookup&quot;, &quot;share&quot; and depending on the app, &quot;speak&quot;, &quot;highlight&quot; etc.
Use &quot;lookup&quot;. If you find appropriate meaning, great! otherwise, scroll to the bottom and tap &quot;search web&quot; and it will shoot to Safari.

If you know how to pronounce, tell Siri to get some images. Use a command that doesn't invoke photos app, rather &quot;web search&quot;.