Quick Start

Run Your First Local Batch

Use the built-in Compress only workflow when you only want local compression.

1. Open the main TinyOwl window.
2. Add images with the file picker or drag them into the file area.
3. In the workflow panel, select Compress only.
4. Check the step summary. For this workflow, it should show only the compression step.
5. Click the run button.
6. Review each file in the list: saved path, compressed size, status, and any error message.

Understand the Workflow Summary

The main window shows the selected workflow as a compact sequence of steps:

Resize -> Compression -> Upload

Only Compression is required. Resize appears when the workflow changes image dimensions before compression. Upload appears when the workflow sends compressed files to a configured provider.

Use the main window for daily runs. Use Configure in the workflow panel, or open Settings -> Workflows, when you need to edit the workflow itself.

When to Open Settings

Open Settings when you want to change reusable building blocks:

• Use Compression Presets to control format, compression level, save behavior, and compressed filename behavior.
• Use Resize Presets to create reusable dimension rules.
• Use Upload Providers to add Cloudflare R2, S3, OSS, COS, MinIO, or another S3-compatible destination.
• Use Workflows to combine resize, compression, and upload into one reusable flow.

A Safe First Workflow

For new setups, start conservatively:

1. Keep compression in save-as mode.
2. Run a small batch first.
3. Confirm the output folder and filenames.
4. If upload is involved, test the provider connection before running a large batch.
5. Only use overwrite presets after checking the output on copies.