Extension.Software

10 listings we've seen · as of 6 Oct 2026. This is the maker name shown on the store, not proof of who owns the company.

Tools

Send personalized WhatsApp Web messages to a list of numbers without saving contacts. Placeholders, media, delays. 100% local, free.

Tools

Export WhatsApp Web contacts, group members & open chats to CSV, vCard, JSON or HTML. 100% local. By Extension.software.

Workflow & Planning

Copy the open Gmail thread as clean Markdown, ready to paste into ChatGPT, Claude, or any AI for analysis.

Functionality & UI

Hover to view full-size images and videos on any site. Zoom, pan, rotate, save, and browse images in a built-in gallery.

Tools

Find every image on a page, preview them in a visual grid, filter by size or type, and bulk-download to a named folder in one click.

Developer Tools

Capture a screenshot of an entire web page. Export as PNG, JPG, or PDF. 100% free.

Developer Tools

Copy a Linear issue with all sub-issues and comments as clean Markdown — paste into Claude Code, ChatGPT or Cursor.

Accessibility

A global dark theme for the web. Dynamic per-page color inversion, simple/filter fallbacks, per-site control and scheduling.

Workflow & Planning

A private, local-first hub to sign, fill, and organize your PDF documents. No uploads — everything stays in your browser.

Tools

Turn a WhatsApp Web chat into Kanban tasks using your own OpenAI or Anthropic API key. Local board with full move history.