Privacy
Understand local processing, stored metadata, report data, backups, and external service behavior.
Vacuum Image Optimizer processes media locally on your WordPress server.
No image data is sent to third-party services. Optimization metadata is stored locally in WordPress, and optional backups are stored locally in the uploads/plugin backup directory.
WordPress 7.1 may process an uploaded image in the user's browser before the resulting files reach the site. This is WordPress Core behavior; Vacuum itself still performs its optimization, validation, derivative generation, and delivery decisions locally on the WordPress installation.
External services
The plugin does not send images to external optimization APIs and does not require an account with a third-party service.
Stored data
Vacuum stores settings in WordPress options and optimization state in attachment metadata. This may include generated file paths, generated URLs, byte sizes, savings values, status, engine used, timestamps, backup path, and error messages.
Backups
Backups are stored on the same WordPress installation under the uploads area. Treat backups as copies of original media and include them in normal site security and retention planning.
Reports
Reports summarize attachment metadata and can be exported as CSV by authorized admins.