Link to this sectionGoogle Cloud Storage Integration#

The Google Cloud Storage integration connects your GCS buckets to Ultralytics Platform. Your images stay in your buckets — Platform indexes them in place, so you can browse, annotate, and train YOLO models without uploading a copy.

Pro feature

Google Cloud Storage datasets require a Pro or Enterprise plan. Free workspaces see the integration and are prompted to upgrade when connecting. Existing Google Cloud Storage datasets stay fully accessible if a subscription ends — only new connections and imports require Pro.

Link to this sectionCreate a Read-Only Service Account#

Platform only ever reads from your storage — it never writes, modifies, or deletes your objects. Create a dedicated service account with read access only:

1. In the Google Cloud console, go to IAM & Admin > Service Accounts and create a service account.
2. Grant it the Storage Object Viewer (roles/storage.objectViewer) role on the buckets you want to connect.
3. Open the service account, choose Keys > Add key > Create new key, select JSON, and download the key file.

Link to this sectionConnect to Platform#

1. Go to Settings > Integrations and find the Google Cloud card.
2. Click Connect and paste the contents of the service account JSON key.
3. Platform lists the buckets the service account can read. Select the ones to connect, or enter a bucket name manually if the account can't list buckets.
4. Click Connect. Platform verifies it can list and read each selected bucket before saving anything.

Reconnecting the same service account later adds new buckets to the existing integration. A saved credential is only replaced once its replacement can still read every bucket you've already connected.

Credential security

Credentials are encrypted at rest with AES-256-GCM, are never returned to the browser, and never enter training job payloads. To revoke access, delete the service account key in Google Cloud.

Link to this sectionCreate a Dataset from a GCS Bucket#

1. Click New Dataset and open the Cloud storage tab.
2. Pick a connected bucket and browse to the folder containing your data.
3. Confirm the folder, adjust the dataset name, and create the dataset.

Platform lists the folder once and indexes what it finds:

• Images — .jpg, .jpeg, .png, .webp, and .avif objects are indexed with dimensions read from bounded header requests. Source pixels are never copied out of your bucket.
• Labels — YOLO .txt sidecars are parsed into Platform annotations, matched by the standard images/ → labels/ layout or as same-folder siblings.
• Metadata — a data.yaml/data.yml provides class names, task type, and pose keypoint shape, exactly like an archive upload.
• Splits — train, val, and test folder names in the object path assign splits automatically.

The dataset then behaves like any other: browse and annotate it, set it public or private, share it with your team, and train on it through managed training. Originals are streamed on demand, and indexed images do not consume your Platform storage quota.

Limits

A single import indexes up to 50,000 objects, and label or YAML files up to 1 MB each. Larger buckets should be split across multiple datasets.

Keep indexed objects immutable

Every indexed image is pinned to its GCS object generation, and Platform fails closed if an object changes underneath it. Add new objects instead of overwriting existing ones.

Link to this sectionFailed Imports#

If an import fails — an empty folder, a typo in the path, or revoked permissions — the dataset shows the error on its page. Editors can click Retry import to restart it with the stored bucket and folder, or create a new dataset pointing at the corrected path.

Link to this sectionTraining#

Managed training works through the normal training flow. Workers download the pinned originals into temporary job storage for the run and remove them with job cleanup — your Google Cloud credentials never reach compute.

Link to this sectionCurrent Limitations#

GCS-backed datasets currently exclude features that require Platform-owned copies of your images: auto-annotation, clustering analysis, dataset cloning, and immutable version snapshots.

Deleting a GCS-backed dataset, or individual images from it, removes Platform's references only — your objects are never touched.

Also see the Amazon S3 and Azure Blob Storage integrations.