Images from external URL are not displayed in LaTeX output.

[Paebbels]

I'm using dynamically rendered images from online services like Shields.io in my documentation. This works fine in the HTML version created locally and on RTD. However, these images are not visible in the also generated PDF file.

According to Builders, the latex builder only supports pdf, png and jpg formats. So I'm using SVG images in the HTML version and PNG images in the latex version of the documentation:

.. # Shield for a GitHub repository
.. |SHIELD:svg:GH-Logo| image:: https://img.shields.io/badge/-VLSI--EDA/PoC-323131.svg?style=flat&logo=data%3Aimage%2Fpng%3Bbase64%2CiVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAMAAABEpIrGAAABKVBMVEX%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FOe9X6AAAAYnRSTlMAAQIDBAcIDA0PEBESFBUWGBkeHyEoMTIzNDU4OTw%2BP0JGWVxeX2BiY2RlZ2hvc3R1eHp%2Bio%2BXm52epKmqq62usLe5wcLDxMnQ0dLW2tvc3t%2Fh4uPo6uvs8fLz9fb3%2Bvv8%2FsuNaVkAAAF7SURBVHgBjdHZW9NAFAXwE0iElCARZCkuIotEUFyQBSJERBEILaAo6d6e%2F%2F%2BPcO58aZslD%2Fxe5mHuPfOdbzA06R1e1sn65aE3ibw5v8OBjj%2BHNHuvx5Tenp1av2bOdSJkKWKBaAmxhYiFogVoEzckw%2BModXcckryZgDigsgLLu1MVT09V1TvPwgqVAyhlinmpMjsCZWRWCsxTlAEEFIvIWKQIALdLsYaMNYqui02KPw4ynN8Um%2FAp1pGzTuEj1Ek2cmz9dogmlVsUuKXSBEUFBaoUoKihQI0iPqaQMxWvnlOsImeV4hz7FBcmMswLin0sU9tBxg61ZYw3qB25SHhyRK0xDuySX179INtfN8qjOvz5u6BNjbsAplvsbVm%2FqAQGFOMb%2B1rTULZJPnsqf%2FMC2kv2bUOYZ%2BR3lLzPr0ehPWbszITmVsn3GCqRWtVFbKZC%2Fvz45tOj1EBlBgPOCUUpOXDiIMF4%2Bzc98G%2FDQNrY1tW9Bc26v%2Fowhof6D6AkqSgsdGGuAAAAAElFTkSuQmCC
   :target: https://www.github.com/VLSI-EDA/PoC
   :alt: Source Code on GitHub
.. |SHIELD:png:GH-Logo| image:: https://img.shields.io/badge/-VLSI--EDA/PoC-323131.png?style=flat&logo=data%3Aimage%2Fpng%3Bbase64%2CiVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAMAAABEpIrGAAABKVBMVEX%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FOe9X6AAAAYnRSTlMAAQIDBAcIDA0PEBESFBUWGBkeHyEoMTIzNDU4OTw%2BP0JGWVxeX2BiY2RlZ2hvc3R1eHp%2Bio%2BXm52epKmqq62usLe5wcLDxMnQ0dLW2tvc3t%2Fh4uPo6uvs8fLz9fb3%2Bvv8%2FsuNaVkAAAF7SURBVHgBjdHZW9NAFAXwE0iElCARZCkuIotEUFyQBSJERBEILaAo6d6e%2F%2F%2BPcO58aZslD%2Fxe5mHuPfOdbzA06R1e1sn65aE3ibw5v8OBjj%2BHNHuvx5Tenp1av2bOdSJkKWKBaAmxhYiFogVoEzckw%2BModXcckryZgDigsgLLu1MVT09V1TvPwgqVAyhlinmpMjsCZWRWCsxTlAEEFIvIWKQIALdLsYaMNYqui02KPw4ynN8Um%2FAp1pGzTuEj1Ek2cmz9dogmlVsUuKXSBEUFBaoUoKihQI0iPqaQMxWvnlOsImeV4hz7FBcmMswLin0sU9tBxg61ZYw3qB25SHhyRK0xDuySX179INtfN8qjOvz5u6BNjbsAplvsbVm%2FqAQGFOMb%2B1rTULZJPnsqf%2FMC2kv2bUOYZ%2BR3lLzPr0ehPWbszITmVsn3GCqRWtVFbKZC%2Fvz45tOj1EBlBgPOCUUpOXDiIMF4%2Bzc98G%2FDQNrY1tW9Bc26v%2Fowhof6D6AkqSgsdGGuAAAAAElFTkSuQmCC
   :target: https://www.github.com/VLSI-EDA/PoC
   :alt: Source Code on GitHub

.. only:: html

   |SHIELD:svg:GH-Logo|

.. only:: latex

   |SHIELD:png:GH-Logo|

To show both images, here are the images as markdown image code:

• SVG:
• PNG:

Local images from /_static/... work also as expected. The documentation is build with -b html or -b latex respectively.

According to the Sphinx (http://www.sphinx-doc.org/en/stable/rest.html?highlight=image#images) and Docutils (http://docutils.sourceforge.net/docs/ref/rst/directives.html#image) documentation, there are no restrictions for images sources and certain builders.

Are images from web URLs not supported for the latex builder?

---

Edit:

As far as I can see, only the HTML builder complains about a non-local image source (web URL).

shields.inc:0: WARNING: nonlocal image URI found: https://img.shields.io/badge/-VLSI--EDA/PoC-323131.svg?style=flat&logo=data%3Aimage................

[tk0miya]

Unfortunately, it is not supported at present.
I have a plan to support it on nearly release.
Please wait for while.

[tk0miya]

Implemented at #3589.
It will be released as v1.6 :-)