Carbonfooter

Carbonfooter helps you understand and showcase the carbon emissions of your website. The plugin automatically measures the carbon footprint of your pages and provides easy-to-use shortcodes to display this information to your visitors. Important Note: This plugin uses the carbonfooter.nl API service to calculate emissions data. By installing and activating this plugin, you agree to share your website URLs with this service for analysis. See the Privacy and External services sections below for more details. Features

• Automatic emissions measurement for all posts and pages
• Background processing to avoid impacting site performance
• Automatic refresh of emissions data (weekly by default)
• One shortcode for display: [carbonfooter] (choose the visual style in Settings → Appearance → Widget style: minimal, sticker, or full)
• Native Gutenberg block support (FSE-compatible): 9 blocks available in the "Carbonfooter" block category
• Post/page columns showing emissions in admin
• Optional green hosting detection
• Multilingual support (English and Dutch)

Usage Use the single shortcode to render the widget. The visual style is selected in Settings. [carbonfooter]

• Style selection: Choose between "minimal", "sticker", or "full" in Carbonfooter → Settings → Appearance → Widget style. The shortcode does not take attributes; a site-wide style is applied.
• Automatic insertion: In Settings, set Display to "Auto" to automatically inject the widget into the site footer on the frontend. Set to "Shortcode" to only render where the shortcode is used.

Gutenberg Blocks The plugin registers 9 native Gutenberg blocks under the "Carbonfooter" category, compatible with Full Site Editing (FSE) themes. All blocks use server-side rendering so data is always fresh.

• carbonfooter/minimal — A lightweight single-line carbon emissions widget.
• carbonfooter/sticker — A compact badge-style carbon emissions sticker.
• carbonfooter/full — A composable container block for building custom carbon emissions layouts using the stat blocks below.
• carbonfooter/emissions — Displays CO₂ emissions per visit for the current page.
• carbonfooter/trees — Displays trees needed to offset annual emissions for the current page.
• carbonfooter/driving — Displays equivalent driving distance from annual emissions for the current page.
• carbonfooter/pageweight — Displays the page weight (transfer size) for the current page.
• carbonfooter/green-hosting — Displays whether the site uses green energy hosting.
• carbonfooter/label — A minimal inline carbon emissions label.

All blocks support color, spacing, border-radius, and typography controls via the block editor sidebar. Find them by searching "Carbonfooter" in the block inserter.

0.21.0

• Add native Gutenberg block support for Full Site Editing (FSE).
• Introduces 9 blocks: carbonfooter/minimal, emissions, trees, driving, pageweight, green-hosting, full, sticker, label.
• All blocks use server-side rendering via a new BlockRenderer class.
• Centralises SVG icons into a shared SvgIcons class.
• Adds a custom carbonfooter block category, multi-entry webpack config, and updated Dutch translations.

0.20.0

• Added new footer designs and improved shortcode/preview consistency.
• Improved Dutch/English translation handling to avoid mixed-language output.
• Improved release packaging so update zips include the latest translation files.

0.19.0

• Add “External services” section and expand Privacy with data sent and opt‑out controls
• Consolidate shortcode docs to a single [carbonfooter]; style chosen in Settings
• Packaging: release script now also outputs carbonfooter.zip (includes src/) alongside versioned zip
• Update README.md with a short External services note and privacy link
• Update readme files and contributors

0.18.0

• Convert all inline CSS to wp_add_inline_style() for WordPress compliance
• Convert all inline JavaScript to wp_add_inline_script() for WordPress compliance
• Fix sanitization callbacks in register_setting() calls for proper data validation
• Update frontend widget styles to use proper WordPress enqueue methods
• Convert shortcode styles (minimal, sticker, full) to wp_add_inline_style()
• Move dashboard widget CSS from inline styles to wp_add_inline_style()
• Fix activation redirect script to use wp_add_inline_script()
• Resolve PHPUnit test configuration path issues
• Achieve full WordPress repository compliance standards
• Document external service usage (External services + expanded Privacy)
• Packaging: release script produces carbonfooter.zip (non-versioned) for WP upload

0.17.0

• Release plugin version 0.17.0 with minior improvements.

0.16.3

• Fix get_avarage_emissions() is null on dashboard widget

0.16.2

• Update readme files

0.16.1

• Fix shortcode output

0.16.0

• Include version script

0.15.0

• Major refactor: unified namespace CarbonfooterPlugin and improved autoloader
• Added REST Settings API with validation and translators comments
• Hardened security (escaping, capability checks) and improved i18n
• Enhanced docs and inline PHPDoc across codebase
• Improved dashboard widget and admin UX