Grab All Files – Bulk PDF & File Downloader

Grab All Files is a browser extension that detects downloadable files on the page you are viewing or any URL you enter, then lets you batch-download the files you select. You can also merge multiple PDFs locally in your browser without uploading anything.

This extension includes a 14-day free trial. Continued use after the trial requires a paid license.

Paid licenses are sold by Tetsunobu Kawai, not by Mozilla. Payment is processed via Stripe Checkout on an external purchase page, not inside the extension.

Key features:

• Scan the current page, paste one or many URLs, or crawl a whole site (depth 0–5 or unlimited, up to 10,000 pages)
• Finds files ordinary downloaders miss: PDFs inside iframes and viewers, lazy-loaded images, fetch/XHR responses, blob URLs, CMS download routes, hidden form values, and 39 data-* attributes
• Works behind logins — uses your existing browser session, with an optional cookie mode for intranets, LMS/portals, and member-only pages
• Works where others fail — handles Cloudflare/WAF bot-walls, JavaScript single-page apps (React, Next, Nuxt, Vue), and CSRF-protected POST forms, and confirms file types by signature, not just extension
• Filter by name, title, type, and size with include and exclude rules; sort, de-duplicate, and reorder before downloading
• 41 file-type categories (documents, images, spreadsheets, e-books, CAD/BIM, GIS, camera RAW, AI/ML models, and more) plus your own custom extensions
• Bulk-download with adjustable parallelism, pause/resume, auto-retry, and one-click retry of failed files; organize saved files into folders by type or domain
• Rename downloads from each PDF's title or page heading
• Local PDF merge (optionally ordered by the page number printed inside) and local ZIP creation — everything stays in your browser, no cloud upload
• Export a CSV or a full JSON log of file URLs, names, sizes, types, and titles
• Right-click context-menu actions, scan history, and downloaded badges so you don't grab the same file twice; UI in 10 languages: English, Japanese, German, Spanish, French, Italian, Korean, Simplified Chinese, Traditional Chinese, Brazilian Portuguese

Grab All Files requests broad HTTPS host permission so the user can scan any site of their choice — the target domain cannot be known in advance. The extension does not send scan history, page HTML, browsing activity, or file contents to any developer-controlled server. Outbound traffic to a developer server is limited to HTTPS calls to the Supabase license backend for license and trial verification only.