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This folder contains the source for the HSTS preload list submission website at

See for the core library that checks websites against the submission requirements.



  • A go development environment.

  • The java commandline program for running JAR files (for the Cloud Datastore Emulator).

    go get
    cd $GOPATH/src/
    make serve

The first time you run it, make serve will download the Cloud Datastore Emulator (≈115MB) to a cache directory.


If you have access to the Google Cloud hstspreload project:

make deploy

Unfortunately, this usually takes 5-10 minutes.


This project is used by the Chromium team to maintain the HSTS preload list. This is not an official Google product.

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