Image Downloader – すばやく保存・収集

ページ内の画像をすばやく保存・一括収集し、実際の形式を保持して、選択したコンテンツをローカル画像と一緒に書き出します。

Save one image instantly, or collect the images you need from an entire page. Image Downloader keeps its fast Alt/Option-click workflow and adds a local collection workspace. Scan the current page, review responsive and lazy-loaded sources, filter the results, select what you need, and export the selected images as one ZIP. Processing stays inside your browser. Quick Save: - Hold Alt on Windows/Linux or Option on macOS and click an image to save it immediately - Choose Alt/Option, Ctrl/Command, Shift, or Alt/Option + Shift as the click modifier - Use Smart format detection to identify the real image type, even when the URL has no useful extension - Keep original bytes and filenames when you do not want conversion - Convert to PNG, JPG, or WebP with adjustable JPG/WebP quality - Preserve GIF animation, SVG vectors, AVIF files, and other recognized source formats in Smart or Keep original mode - Save through the browser's standard download system with automatic conflict-safe naming Page image collection workbench: - Scan regular images, responsive `srcset` sources, lazy-loaded image attributes, CSS backgrounds, inline SVGs, video posters, preloaded images, and page metadata - Prefer linked originals and larger responsive candidates over displayed thumbnails - Search by filename, alt text, or URL - Filter by minimum width, minimum height, and image format - Sort by page order, pixel area, or width - Select the visible result set or choose individual images - Export selected images and a `sources.csv` manifest in one local ZIP - Use Smart, Keep original, PNG, JPG, or WebP independently for each batch export Localized content package: - Select text and images on a webpage, then export the selection from the popup or context menu - Receive a ZIP containing editable `content.md`, `content.html`, a local `images/` folder, and `sources.csv` - Image links inside the exported Markdown and HTML are rewritten to local relative paths - Images that cannot be downloaded are removed from the localized document instead of leaving hidden remote dependencies - Existing rich-text, Markdown, and clean HTML clipboard actions remain available Additional local tools: - Free-size region screenshots using PNG, JPG, or WebP settings - Fixed-ratio GIF recording in 16:9, 4:3, 1:1, or 9:16 for up to 10 seconds - Optional 3-second GIF countdown and early-stop shortcut - English interface by default, with Simplified Chinese available Private by design: images, selected webpage content, screenshots, GIF frames, format detection, conversion, and ZIP generation are processed locally. There are no uploads, accounts, analytics, ads, trackers, or remote executable code. Browser-internal pages and extension-store pages do not allow extensions to run. Local file pages require file-URL access to be enabled in the extension details screen. Use the browser's Downloads settings to control the destination and download prompts. The extension does not request direct access to a local folder.