Simply go to https://www.ranchcomputing.com/submit-project and specify the parameters of you scene.
Preparing your project with the RANCHecker is required before any upload.
It will generate a file with the correct extension. You can rename this file if you wish, as long as it fulfills the naming requirements.
For large project(s), please consult Rendering a very heavy project section.
You should see the robust module to upload you project:
Simply drag-and-drop your file prepare by RANCHecker, in the white zone to start the upload. If there is any issue during the upload (internet interruption for instance) you can reload the page and re-initiate the upload: it will automatically resume where it has been stopped.
If you already rendered a project, you can render it again with different parameters (higher resolution, other camera, different frame range) without having to upload it!
On the upload page, simply click on “Reuse an already uploaded project” : it will show you all the files that are available.
You can rename the file if you wish (with the same naming requirements as an uploaded file) and reuse it by clicking on the “Reuse” button.