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Automated EXIF-to-Taxonomy Cinematic Watermarker

Automatically extracts EXIF data into searchable taxonomies and adds a cinematic watermark to the 'large' image size.

by Sapthesh V · github.com/sapthesh/automated-exif-to-taxonomy-cinematic-watermarker · website

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Install

No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:

wp plugin install https://github.com/sapthesh/automated-exif-to-taxonomy-cinematic-watermarker/archive/refs/heads/main.zip
Readme github.com/sapthesh/automated-exif-to-taxonomy-cinematic-watermarker ↗

Hits

Automated EXIF-to-Taxonomy Cinematic Watermarker is a powerful, zero-configuration workflow tool designed specifically for professional photographers. It automates the tedious task of indexing camera metadata and adds a sophisticated, minimalist watermark to web-ready images.

✨ Key Features

  • 🔍 Automatic EXIF Extraction: Immediately pulls Camera Make, Lens Model, Focal Length, and ISO from uploaded images.
  • 📈 SEO-Ready Taxonomies: Programmatically registers and assigns EXIF data to custom taxonomies, making your technical settings indexable by search engines and searchable by users.
  • 🎬 Cinematic Watermarking: Uses the PHP GD library to burn a minimalist text overlay (Camera | Lens | Settings) onto the large image size.
  • 🛡️ Original File Protection: Your original high-resolution uploads (full size) remain 100% untouched and un-watermarked.
  • ⚡ Performance-Optimized: Hook-based execution ensures the processing happens in the background during the standard WordPress upload flow.

🛠️ How It Works

The plugin hooks into the wp_generate_attachment_metadata filter, which fires the moment an image is uploaded.

  1. Extract: It reads the raw binary EXIF data using PHP's native exif_read_data().
  2. Taxonomize: It sanitizes this data and maps it to specific custom taxonomies (aewmc_camera_make, aewmc_lens_model, etc.).
  3. Process: It identifies the large generated image file and applies a semi-transparent, dynamic-sized watermark in the bottom-right corner.

🚀 Installation

  1. Download/Clone: Place the automated-exif-watermarker folder into your /wp-content/plugins/ directory.
  2. Asset Setup:
    • Create the directory: assets/fonts/
    • Place a TrueType font (.ttf) of your choice inside and rename it to cinematic-font.ttf.
  3. Activate: Navigate to the Plugins menu in your WordPress Admin and click Activate.
  4. Verify: Upload a photo to the Media Library. Check the "Attachment Details" for new EXIF tags and view the "Large" image preview to see the watermark.

⚙️ Technical Specifications

Custom Taxonomies Registered

Taxonomy Slug Label Example Value
aewmc_camera_make Camera Make Sony, Canon, Fujifilm
aewmc_lens_model Lens Model FE 35mm F1.4 GM
aewmc_focal_length Focal Length 35mm
aewmc_iso ISO ISO 400

Requirements

  • PHP GD Extension: Must be enabled on your server for watermarking.
  • Write Permissions: Ensure your uploads/ directory allows the plugin to modify generated image sizes.

❓ FAQ

Q: Will this slow down my website?
A: No. The processing happens only once—during the initial image upload. It does not affect front-end page load speeds.

Q: Does it work with PNG files?
A: Yes, it supports both JPEG and PNG. Note that many PNG files do not contain standard EXIF data.

Q: How do I change the watermark font?
A: Simply replace the file at assets/fonts/cinematic-font.ttf with any other .ttf file using the same name.

🔒 Security & Privacy

This plugin treats metadata as user-supplied input. Every piece of EXIF data is passed through sanitize_text_field() before being committed to your database to prevent XSS or injection vulnerabilities.

📜 License

This project is licensed under the GPL v2 or later.