improve page loading performance

[grahamlopez]

in some browsers, there is a flash or brief pause before the css/js gets loaded. Other sites using sphinx with the same theme do not seem to do this (at least as badly). This might be due to several issues, and probably needs some investigation. See e.g. https://stackoverflow.com/a/12358419

[grahamlopez]

is this something that @admgc and/or @pshires could help me out with?

[mpbelhorn]

Maybe related to readthedocs/sphinx_rtd_theme#724

[mpbelhorn]

Yes, this appears to be fixed in RTD theme version 0.4.3.dev0 at (at least) sphinx_rtd_theme commit feb0beb running on my local machine:

$ pipenv graph 
sphinx-rtd-theme==0.4.3.dev0
  - sphinx [required: Any, installed: 2.2.0]
    - alabaster [required: >=0.7,<0.8, installed: 0.7.12]
    - babel [required: >=1.3,!=2.0, installed: 2.7.0]
      - pytz [required: >=2015.7, installed: 2019.2]
    - docutils [required: >=0.12, installed: 0.15.2]
    - imagesize [required: Any, installed: 1.1.0]
    - Jinja2 [required: >=2.3, installed: 2.10.1]
      - MarkupSafe [required: >=0.23, installed: 1.1.1]
    - packaging [required: Any, installed: 19.2]
      - pyparsing [required: >=2.0.2, installed: 2.4.2]
      - six [required: Any, installed: 1.12.0]
    - Pygments [required: >=2.0, installed: 2.4.2]
    - requests [required: >=2.5.0, installed: 2.22.0]
      - certifi [required: >=2017.4.17, installed: 2019.9.11]
      - chardet [required: >=3.0.2,<3.1.0, installed: 3.0.4]
      - idna [required: >=2.5,<2.9, installed: 2.8]
      - urllib3 [required: >=1.21.1,<1.26,!=1.25.1,!=1.25.0, installed: 1.25.6]
    - setuptools [required: Any, installed: 41.2.0]
    - snowballstemmer [required: >=1.1, installed: 1.9.1]
    - sphinxcontrib-applehelp [required: Any, installed: 1.0.1]
    - sphinxcontrib-devhelp [required: Any, installed: 1.0.1]
    - sphinxcontrib-htmlhelp [required: Any, installed: 1.0.2]
    - sphinxcontrib-jsmath [required: Any, installed: 1.0.1]
    - sphinxcontrib-qthelp [required: Any, installed: 1.0.2]
    - sphinxcontrib-serializinghtml [required: Any, installed: 1.1.3]

[jack-morrison]

A fix for this was introduced in 12458e0, and is in tagged version 0.4.3. I rebuilt the production docs yesterday and it has picked up the latest of 0.4.3; should include this change.

[tag:0.4.3] $ git branch --contains 12458e0a6a2264df37ee6ae021e312f40cea36f9
  master