On-Device AI — Private Writing Assistant for WordPress

AI writing help inside the block editor — proofread, rewrite, change tone, summarize, generate meta — powered by Chrome's built-in AI (Gemini Nano). No API key. No per-token cost. No cloud. Your draft never leaves the browser.

Status

Last reviewed: October 2026 · release v2026.10

Why this is different

Every other WordPress AI plugin sends your draft to OpenAI (or similar) and bills you per token. This one uses Chrome's built-in AI — the Gemini Nano model that ships inside the browser and runs on the writer's own machine.

• 🔑 No API key to paste or leak
• 💸 $0 forever — no metered API, no subscription, no caps
• 🔒 Private by design — unpublished drafts / client content stay on-device
• ✈️ Works offline once the model is downloaded

At time of writing, WordPress AI plugins all require a paid cloud key. This is built to be the first that doesn't.

What it does

Every result opens in a review panel first — nothing changes without your confirmation.

How it works

Block editor  →  window built-in AI (Proofreader / Rewriter / Summarizer / LanguageModel)
                 └─ Gemini Nano, on-device, no network call
              →  review modal  →  you apply to block / save as excerpt / copy

No build step: the editor plugin is plain JS over the global wp.* packages + the browser's built-in AI APIs.

Requirements

Desktop Chrome 138+ (or Chromium-based Edge) with built-in AI enabled; a one-time on-device model download on first use. On unsupported browsers the panel shows a friendly notice — WordPress is otherwise unaffected.

Install

1. Copy on-device-ai into wp-content/plugins/ (or zip → Plugins → Add New → Upload).
2. Activate.
3. Open a post → click the On-Device AI icon in the editor's top-right toolbar.
4. Optional: Settings → On-Device AI to toggle tools.

Structure

on-device-ai/
├── on-device-ai.php            # Bootstrap + editor-asset enqueue
├── uninstall.php
├── readme.txt                  # wp.org readme
├── includes/
│   ├── class-oda-kit.php       # Loader (singleton)
│   └── class-oda-settings.php  # Settings → On-Device AI
└── assets/
    ├── editor.js               # Gutenberg plugin (no build) + built-in AI calls
    └── editor.css

License

GPL-2.0-or-later. Built by SkynetLabs. PRs welcome.

Work with SkynetLabs

Built by Waseem Nasir at SkynetLabs — n8n + AI automation for small businesses.

• Hire on Fiverr: https://www.fiverr.com/agencies/skynetjoellc
• Hire on Upwork: https://www.upwork.com/freelancers/muhammadwaseemnasir
• Book a free call: https://calendly.com/skynetlabs/schedule-a-free-consultation