Luis Alberto Martinez arenagroove

Fast Optimized JavaScript Image Color Extract Utilities

A set of high-performance, dependency-free functions for extracting color information from image pixel data using the HTML Canvas API.

Features

Fast average color calculation using loop unrolling and Uint32Array
Perceptual dominant color detection using HSL quantization and weighted analysis
Luminance-weighted color averaging for natural-looking color estimation
K-Means clustering for extracting top representative colors

JavaScript Color Conversion

Optimized JavaScript color conversions across sRGB, HEX, HSL, HSV, Lab, LCH, OKLCH, Display-P3, and includes color blindness simulation.

Supported Color Spaces

RGB ↔️ HEX
RGB ↔️ HSL
RGB ↔️ HSV
RGB ↔️ Lab / LCH

Thumbnail Generator with Aspect Ratio Control (PowerShell)

Batch-generate PNG and WebP thumbnails from a folder of images using FFmpeg. It supports flexible cropping behavior based on a per-image aspect ratio map, a global override, or the original image dimensions. Output dimensions and quality for each format are configurable.

Features

Removes previously generated thumbnails
Uses FFmpeg to generate thumbnails in PNG and WebP formats
Supports forced aspect ratio cropping via a configurable mapping
Optionally forces all thumbnails to a fixed aspect ratio

Sequential Image Renamer (PowerShell)

Rename image files in the current directory with a sequential, zero-padded index and a customizable prefix. It supports .jpg, .png, and .webp formats, ensures lowercase file extensions, and prevents overwriting existing files by checking for filename collisions.

Features

Sequential renaming with two-digit zero-padding (e.g., lr-demo-img-01.jpg)
Supports .jpg, .png, .webp file types
Automatically converts extensions to lowercase
Avoids overwriting by skipping used filenames

	<?php
	/**
	* Plugin Name: LR Speculative Loading Toggle (UI)
	* Description: Adds admin UI to enable or disable speculative loading introduced in WordPress 6.8.
	* Version: 1.5
	* Author: Luis Martinez
	* Author URI: https://www.lessrain.com
	*/

	if ( ! defined( 'ABSPATH' ) ) {

	<?php
	/**
	* Plugin Name: LR Migrate Users with Metadata
	* Description: Exports and imports WordPress users, including metadata, hashed passwords, and custom fields.
	* Version: 2.0
	* Author: Luis Martinez
	* Author URI: https://www.lessrain.com
	*/

	if (!defined('WPINC')) {

	<?php

	/**
	* Plugin Name: LR Custom Media Upload Directory
	* Description: A must-use plugin to upload files with specified prefixes to specific folders.
	* Version: 2.1
	* Author: Luis Martinez
	* Author URI: https://www.lessrain.com
	*/

	<?php
	/**
	* Plugin Name: LR ACF & ACFE Administrator Permission Fixes
	* Description: Adds missing ACF/ACFE capabilities to administrators and enables global user_role logic in location rules.
	* Version: 1.0
	* Author: Luis Martinez
	* Author URI: https://www.lessrain.com
	*/

	if (!defined('ABSPATH')) {

	You are a color assistant named Pantone to RGB, HEX, and CMYK Converter.

	Your task is to convert Pantone codes (e.g., "Pantone 17-1230 TCX") into:

	- HEX (e.g., #A47864)
	- RGB (e.g., 164, 120, 100)
	- CMYK (e.g., 0%, 27%, 39%, 36%)
	- Include a short description of the color when possible.

	Always respond in the user's language. If unclear, default to English.

	You are an assistant specialized in extracting and analyzing heading structures (H1–H6) from websites or pasted text for the purpose of content auditing and SEO optimization.

	1. Extract headings exactly as they appear, without assuming hierarchy.

	2. Display them in a hierarchically indented list, but only based on the actual structure.

	3. For each heading, provide:
	- Observation: Structural, linguistic, or semantic notes.
	- Recommendation: 2 SEO-friendly improvement options in plain language.