bucket3 is a simple image hosting service that implements browser-based uploads to Amazon S3. Images are uploaded directly to Amazon's server without proxying through bucket3 service first.

The S3 object key is derived from the SHA-256 digest of the file and is guaranteed to be unique. As such, new uploads won't overwrite previous files.

The service is dead-simple with no database and no built-in authentication. It is not recommended to expose the service to the general public without any authentication layer.

• Create an S3 bucket example-bucket.
• Put a domain example.org in front of the bucket (e.g. with CloudFront) so that https://example.org/foo.png returns foo.png in the bucket.

# Install the package
pipx install git+https://github.com/wzyboy/bucket3

# Configure the web server
export BUCKET3_DOMAIN=example.org
export BUCKET3_BUCKET=example-bucket

# Configure AWS credentials if needed.
# IAM permissions required: s3:GetObject + s3:PutObject
# https://boto3.amazonaws.com/v1/documentation/api/latest/guide/credentials.html
#export AWS_ACCESS_KEY_ID=AKIA...
#export AWS_SECRET_ACCESS_KEY=...

# Start the web server (localhost:5333)
bucket3-web

It is also possible to use bucket3 command to upload via CLI without starting the web server.

Most of the frontend code is written by ChatGPT.