Paperclip watermarking processor

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Paperclip watermarking processor

✓ Published0🌍 Public

Last edited Jun 28, 2011

Created on Jun 28, 2011

This example shows a Paperclip processor that watermarks uploaded images using ImageMagick command-line tools. It composes a watermark image onto the source file with configurable gravity positioning and offset, or falls back to plain conversion if no watermark path is provided. The code uses the `composite` and `convert` commands via the Cocaine gem, applying resize and crop transformations through Paperclip’s Geometry parsing. It handles format conversion and preserves the original basename while writing the result to a temporary file.

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