內容簡介
Bender 是一款專為 WordPress 圖片保護設計的外掛，能有效防止圖片被盜取，並保持網站的 SEO、速度及使用者體驗。透過馬賽克技術，Bender 讓盜用者只能獲得無法辨識的拼圖，保護您的影像資產。
【主要功能】
• 自動生成馬賽克圖像
• 可見的水印與 IPTC 版權元數據
• 阻擋 HTML 爬蟲與右鍵下載
• 支援批次保護與解除保護
• 6×6 馬賽克網格
外掛標籤
開發者團隊
② 後台搜尋「Bender – Mosaic Image Protection」→ 直接安裝（推薦）
原文外掛簡介
Your WordPress images travel as a mosaic. Whoever steals them finds only shuffled tiles.
Bender protects your site’s photos from scrapers, AI training bots, and outright theft, without touching SEO, speed, or the experience of your human visitors.
How it works
On upload (or from the Media Library), Bender automatically generates two derivatives for every image:
Mosaic atlas – the image in full resolution, with an N×N grid permuted and flipped via HMAC-SHA256 → Fisher-Yates using a per-image secret key. A single CDN-cacheable file: downloaded as-is, it’s an unreadable puzzle.
Signed low-res – a reduced version with a visible diagonal watermark and IPTC copyright metadata (read by Google Images), used as the source: SEO, social previews, and the no-JavaScript fallback.
The original hi-res URL never appears in the page markup. In the browser, Bender waits for the image to enter the viewport, downloads the atlas, requests the reconstruction map from a REST endpoint protected by a time-limited HMAC token, and reassembles the mosaic on a
HTML scrapers / mass bots — blocked: the HTML only contains the watermarked low-res
Right-click “Save image” — blocked: the canvas isn’t a file
Hi-res hotlinking — blocked: no plain hi-res URL exists
Downloading the atlas — useless: permuted, flipped tiles, no map
Map enumeration via REST — mitigated: time-limited HMAC token, per-IP rate limiting
Screenshots — not blockable, by any technology
That’s why Bender always signs, not just hides: visible watermarking and IPTC metadata make authorship provable even when a copy slips through.
What’s included
This plugin is fully functional as-is, with no locked or restricted features:
Automatic protection on upload, unlimited images
6×6 mosaic grid
Visible “Bender™” watermark
Default IPTC copyright metadata
JPEG atlas format
Bulk protect/unprotect from the Media Library
Denser grids, WebP/PNG atlas formats, fully customizable watermark and IPTC text, invisible forensic (LSB) watermarking, and configurable token validity are available in Bender Pro, a separate plugin distributed outside WordPress.org.
