Image Harvest - 智能批量下载网页图片

Pain Point: Mainstream image download tools silently miss most images

When designers build moodboards, researchers build resource libraries, or e-commerce operators archive competitor materials, their common workflow is: open the page → install a "Save All Images" type extension → one-click download. But you probably don't know: mainstream image download tools miss 60-90% of images on modern webpages. Real test on apple.com homepage:

• Mainstream tool A: captured 8 images
• Mainstream tool B: captured 11 images
• Image Harvest: captured 60+ images Technical reason for missed images: modern webpage images aren't just in <img> tags. They're hidden in:
• CSS background-image (most hero banners are stored here)
• Shadow DOM (commonly used in design system components)
• Lazy-loaded async content (standard for e-commerce product lists)
• srcset high-resolution candidates (for Retina display adaptation)
• <picture> / <source> elements Mainstream tools only scan <img> tags, so they miss 60-90% of images.

What Image Harvest Does

We implemented 5 technical measures to ensure no images are missed:

1. Recursive Shadow DOM traversal — digs into closed components to capture images
2. CSS background extraction — covers both inline and external stylesheets
3. Lazy load waiting + MutationObserver real-time monitoring — captures newly loaded images that appear when scrolling
4. srcset parsing — automatically selects the highest resolution version, no low-quality thumbnails
5. Same-origin iframe content extraction

Core Features

• 🔍 Smart capture (full coverage of 5 modern web technologies)
• 🎛️ Flexible filtering (by size, format, layout, URL keywords)
• 📥 Batch ZIP download (free for up to 50 images per download, unlimited for paid users)
• 🌐 Simultaneous capture across multiple tabs (paid feature)
• 🔎 Automatic duplicate removal for similar images (pHash perceptual hashing)
• 🎨 Dominant color extraction (5 colors per image)
• ⭐ Local image favorites (stored in IndexedDB, works offline)
• 🔍 Reverse image search (Google / TinEye / Baidu / Yandex)
• 🔒 100% local processing, zero data reporting

Pricing Model (independent developer style)

• Free version (permanently available): 20 images per download + single/full selection + ZIP packaging + Google reverse search
• Paid version (one-time purchase of ¥69): unlimited batch downloads / multi-tab support / similar image deduplication / 4-engine reverse search / custom naming templates No subscriptions, no recurring fees, no data reporting. One-time purchase for permanent use.

Ideal For

• Designers building moodboards / conducting visual research
• Researchers / content creators collecting resources
• E-commerce operators archiving competitor materials
• Photographers organizing inspiration references