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Wallhaven Enhancer

Stats on thumbs + hover preview + click open + D download + arrow browse

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Maker

quantavil

Dagelijks aantal installaties

Totaal aantal installaties

Beoordelingen

0 0 0

Versie

1.1

Gemaakt op

13-06-2026

Bijgewerkt op

13-06-2026

Grootte

12,1 KB

Licentie

MIT

Wordt toegepast op

wallhaven.cc

Missed the installation block. Updated README:

Wallhaven Enhancer

A high-performance userscript that optimizes the Wallhaven gallery interface with real-time metadata injections, automated hover previews, seamless keyboard browsing, and rate-limit safe background data resolution.

Installation

Install a userscript manager extension such as Tampermonkey, Violentmonkey, or Greasemonkey for your browser.
Click the Install this script button at the top of this Greasy Fork page.
Confirm the installation in your userscript manager dashboard.
Navigate to or refresh any Wallhaven page to activate the enhancer features.

Features

Instant Overlay Previews: Hovering over any thumbnail opens an adaptive, high-resolution visual overlay capped at 92vw and 88vh to preserve maximum pixel details without losing visual grid alignment.
Lazy-Loaded File Sizes: Displays file size metrics directly on the thumbnail bar. Uses an asynchronous IntersectionObserver coupled with a throttled network queue (50ms sequential cool-down boundary) to pre-fetch header data without triggering Cloudflare rate limits.
Intelligent Auto-Close: Previews close instantly when moving the cursor away, triggering manual pointer scroll (wheel), or mobile swipe actions (touchmove).
Cached Keyboard Navigation: Preload grid index lists dynamically when the overlay initializes. Prevents redundant DOM queries during fast arrow-key browsing.

Keyboard Controls & Interactions

Trigger	Action	Target
Mouse Hover	Activates full-resolution preview overlay	Thumbnail Grid
Mouse Move Away	Automatically terminates preview state	Active Overlay
Mouse Scroll (Wheel)	Instantly terminates overlay to allow unhindered browsing	Active Overlay
Click	Opens the core wallpaper profile page in a background tab	Active Overlay
`ArrowRight`	Advances to the next structural item in the cached grid layout	Active Overlay
`ArrowLeft`	Navigates back to the preceding item in the cached grid layout	Active Overlay
`D` / `d`	Triggers a direct background download via native browser loops	Active Overlay
`Escape`	Forced termination of active preview layer	Active Overlay

Technical Architecture

MutationObserver Surveillance Engine: Monitors dynamic DOM append operations (e.g., infinite scrolling). Truncates internal cycles by screening out self-generated modifications originating from the overlay container target block (#whOv).
Decoupled Concurrency Loop: Offloads extension sorting and payload delivery to a prioritized data queue (networkQueue), restricting execution matrices to a rigid, deterministic sequence.
Memory Optimization: Leverages a local localStorage eviction mechanism limited strictly to the top 2000 entries to prevent localized overhead creep. Automatically recycles unused memory blocks using URL.revokeObjectURL handlers during manual browser download streams.