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Multi-Thumbnail Generator (PowerShell + FFmpeg)

This PowerShell script generates WordPress-style image thumbnails at multiple sizes and formats with cropping and aspect ratio control. It uses FFmpeg for scaling, cropping, and encoding images into JPG, PNG, or WebP formats.

Features

• ✅ Generate thumbnails at any number of target widths
• ✅ Supports output in jpg, png, and webp formats
• ✅ Optional forced aspect ratio override (e.g., 16:9, 1:1)
• ✅ Precise cropping to produce exact WIDTH x HEIGHT dimensions

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HTML Picture Tag Generator (PowerShell)

Scan a folder of images and thumbnails to automatically generate responsive <picture> HTML tags with srcset attributes.

It supports custom filename patterns (e.g., image-thumb-33-820x461.jpg), optional HTML wrappers, automatic conversion of pixel-based sizes to em, and accurate fallback <img> tags using real image dimensions via ffprobe.

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Features

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CSSUtils – CSS Variable Inspector Utility

A utility object for reading and interpreting CSS custom properties (--variables) from DOM elements.

Features

• ✅ Get raw CSS variable values
• ✅ Optionally parse numeric values (with px, em, rem, %, vw, etc.)
• ✅ Supports responsive units and live layout context
• ✅ Safe fallback: returns NaN when parsing fails

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Modular Type Scale Sass Mixins

Sass mixins and utility functions for generating modular, responsive typographic scales using CSS custom properties. It includes four scalable strategies:

1. Static Modular Scale – based on exponential ratios without responsive behavior.
2. Fluid Modular Scale – container-based scaling using clamp(), unit-based steps, and bias.
3. Viewport Interpolation – responsive scaling using slope-intercept interpolation with vw.
4. Step-to-Step Interpolation – interpolates between explicitly defined steps using clamp().

All approaches output CSS variables such as --ts-h1, --ts-h2, etc., which can be consumed in layout or component styles.

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:focus-visible — Native vs. JavaScript Polyfill Comparison

Compare the browser-native :focus-visible CSS selector with a lightweight JavaScript polyfill that applies a .focus-visible class when focus is triggered via keyboard.

Why This Matters

Native :focus-visible behavior is inconsistent across browsers — especially for <input> and <textarea> elements. Nowadays, a polyfill is still necessary to ensure consistent, accessible focus handling across all elements and environments.

Keyboard Interaction

• Shows the focus ring only when using Tab, Enter, or arrow keys.

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param (
    [string[]]$targetWidths         = @(),          # Provide either this...
    [string[]]$targetHeights        = @(),          # ...or this
    [string[]]$outputFormats        = @("webp"),
    [string]  $forceAspectRatio     = $null,
    [string]  $nameSuffix           = "",
    [string]  $inputFolder          = ".",
    [string]  $outputFolder         = ".",
    [bool]    $overwrite            = $true,

arenagroove

✍️ Natural Style Writing Assistant

This assistant helps you rewrite content in a clear, honest, and human tone — free from hype, jargon, and robotic phrasing.
It supports structured rewrites, tone corrections, and clarity-focused improvements using modular prompt logic.

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📁 Included Files

| Gist Filename | Description |

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FFmpeg Sprite Generator — PowerShell Script

Extracts N evenly spaced frames from a video or GIF and combines them into a single sprite strip (horizontal or vertical). Supports optional resizing, padding between frames, and JSON metadata export.

Features:

• Automatically detects media type (GIF or video)
• Supports frame-accurate or keyframe-based seeking
• Optional resizing with -ResizeTo

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<#
.SYNOPSIS
  Encodes a video optimized for timeline scrubbing, generates posters, and saves metadata.

.DESCRIPTION
  Produces a lightweight video with a tight GOP structure, suitable for accurate scrubbing.
  Also extracts a frame for preview images (JPG, PNG, WebP), and generates a text report
  of key video properties using ffprobe. Allows control of FFmpeg quality and compression settings.

.PARAMETER InputFile

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Generative Critique Assistant

🎯 Role

You are the Generative Critique Assistant — a reflective tool that analyzes and rewrites user-submitted text based on selected critique roles, interpretive lenses, and drift levels.

🧠 Behavior Rules

• Always return two sections:
  1. Critique — concise, analytical review using the selected lenses and role
  2. Rephrased — a rewritten version shaped by the critique and drift level