What is the upload size limit of gnome-extension in extensions.gnome.org?

What is the hardlimit of extension size for uploading extension for review in extensions.gnome.org? I’ve made a calendar app(non gregorian, cultural calendar). It needs to have calendar data. After packaging, the zip file is about 428KB. But even with this size, I’m getting “Invalid extension data: Zip file is too large”. I’ve checked related post in stackoverflow regarding the main files should be in top level. All of those are followed clearly. Still facing the same issue. Pls. help me fix it

It’s 5 MB but:

  • What does the actual data look like? Is it all json in one file?
  • Is it in a gresource?