Yes! Browser AI mode is completely free and works on both LinkedIn and Reddit. It runs on your device with no API key needed. You can also use the Free Tier mode with ChatGPT, Claude, or Gemini web at no cost. API mode (Gemini/OpenAI) uses your own API key, and most users spend under $1/month.

Does Quillzy collect my data?

No. Quillzy collects zero user data. No tracking, no analytics, no personal information. API keys are stored locally in Chrome's secure storage. With Browser AI, everything is processed on-device.

Browser AI uses Gemini Nano, a small AI model built into Chrome that runs entirely on your device. It requires a one-time model download and works offline after that. No API key needed, completely free.

Which AI provider should I choose?

Start with Browser AI. It's free, private, and works offline. If you want higher quality or image-aware commentary, try Google Gemini (has a free tier). OpenAI GPT offers premium quality for power users.

Which platforms does Quillzy support?

Quillzy works on both LinkedIn and Reddit. On LinkedIn: feed, company pages, profile pages, activity pages, messaging, and connection request modals. On Reddit: post comments, comment replies, new posts, and Reddit chat. The AI toolbar appears automatically wherever you can write.

Can I customize the AI output?

Absolutely. Choose from 17 built-in tones (Professional, Casual, Witty, Inspirational, etc.) or create your own custom tone. You can also set max word counts and write custom system prompts.

Are my API keys safe?

Yes. API keys are stored in Chrome's built-in sync storage, never exposed in URLs or sent to any third party. API calls go directly from your browser to the AI provider (Google/OpenAI). Quillzy never sees your keys.

Privacy Policy

Last Updated: March 1, 2026

Overview

Quillzy ("the Extension") is committed to protecting your privacy. This privacy policy explains how we handle data when you use our Chrome Extension.

Data Collection

We do NOT collect, store, or transmit your LinkedIn content, AI-generated text, or API keys to any server we control.

The Extension operates primarily locally in your browser and communicates directly with your chosen AI provider (Browser AI on-device, Google Gemini, or OpenAI). The only exception is anonymous error monitoring (see "Error Monitoring" section below).

What Data is Stored Locally

The Extension stores the following data in Chrome's secure storage:

API Keys: Your Google Gemini or OpenAI API key (stored in Chrome's encrypted sync storage)
Settings: Your selected AI provider, model preferences, tone preferences, custom prompts, and max word count
Browser AI State: Download progress and availability status for the on-device AI model (stored in Chrome's local storage)
Temporary Prompts: When using free tier mode, prompts are stored temporarily (5-minute expiry) in Chrome's local storage

All data is stored locally on your device using Chrome's secure storage APIs. We never transmit this data to any server we control.

What Data is Processed Locally

When you use the Extension's features, the following data is read from LinkedIn pages and processed locally in your browser:

Post Content: Text and author name from LinkedIn posts (for repost and comment modes)
Post Images: Image URLs from LinkedIn posts (fetched for image-aware AI commentary)
Comment Context: Text of the post being commented on
DM Context: The last 2-3 messages in a LinkedIn conversation (sender names and message text, for DM reply mode)
Connection Note Context: Recipient name and profile information from LinkedIn profile pages (for connection note mode)
Editor Content: Text you type in LinkedIn editors (for new post and draft-aware modes)

This data is processed locally and sent only to your chosen AI provider for content generation. It is never stored persistently or sent to any server we control.

Data Transmission to Third Parties

When you use the Extension's AI features, your content and AI requests are transmitted directly to:

Browser AI (Gemini Nano): Processed entirely on your device. No data is transmitted anywhere.
Google Gemini (if selected as your provider): Text content and post images sent via Google's Generative Language API
OpenAI (if selected as your provider): Text content and post images sent via OpenAI's Chat Completions API

These transmissions are governed by the respective privacy policies of these services:

Important: We do NOT proxy, log, or store any of this data. The Extension acts as a client that facilitates direct communication between your browser and the AI provider you choose.

Browser AI (On-Device Processing)

When using Browser AI mode:

All AI processing happens entirely on your device using Chrome's built-in Writer API (Gemini Nano)
No data leaves your browser
No API key is required
No network requests are made for AI generation
The AI model is downloaded once from Google's servers and runs locally

Image Processing

When a LinkedIn post contains images:

Image URLs are extracted from the page DOM
Images are fetched from media.licdn.com (LinkedIn's CDN) by the extension's background script
Images are resized locally (max 1024px) and compressed to JPEG
Processed images are sent to your chosen cloud AI provider (Gemini or OpenAI) for visual context
Browser AI mode does not support image input; a text-only fallback is used
Images are never stored persistently by the Extension

Error Monitoring

We use Sentry for anonymous error monitoring to detect when LinkedIn changes its page structure in ways that break the Extension. This helps us fix compatibility issues quickly.

What Sentry receives:

Page pathname: The LinkedIn URL path where a feature failed (e.g., /feed/), but NOT the content of the page
Error context: Which Extension feature failed (e.g., "comment toolbar injection") and a technical detail string
Browser metadata: Browser name, version, and operating system (e.g., Chrome 145, macOS)
IP address: Not stored. IP address scrubbing is enabled on our Sentry project so IPs are discarded before storage.

What Sentry does NOT receive:

Your LinkedIn content, posts, comments, DMs, or any text you type
Your AI-generated content or prompts
Your API keys, settings, or personal information
Your LinkedIn profile information or connections

Error data is sent to Sentry's servers (hosted in the EU) and is governed by Sentry's Privacy Policy. Error reports are only generated when a specific Extension feature fails to work on LinkedIn, not during normal usage.

Chrome Permissions

The Extension requests the following permissions:

storage: To save your API keys, settings, and Browser AI download state securely in Chrome's storage
Host permission (www.linkedin.com): To inject the Quillzy AI toolbar on LinkedIn posts, comments, DM editors, and connection note modals
Host permission (media.licdn.com): To fetch post images for image-aware AI commentary
Host permission (chatgpt.com, chat.openai.com): To auto-fill prompts on ChatGPT web for free tier mode
Host permission (claude.ai): To auto-fill prompts on Claude web for free tier mode
Host permission (gemini.google.com): To auto-fill prompts on Gemini web for free tier mode
Host permission (*.ingest.de.sentry.io): To send anonymous error reports when Extension features fail

Third-Party Services

The Extension integrates with:

Chrome Writer API (Gemini Nano): On-device AI model provided by Chrome. Subject to Chrome's Terms of Service
Google Gemini API: Subject to Google's Terms of Service and Generative AI Additional Terms
OpenAI API: Subject to OpenAI's Terms of Use
Sentry: Anonymous error monitoring service. Subject to Sentry's Privacy Policy
LinkedIn: The Extension operates on LinkedIn.com but is not affiliated with or endorsed by LinkedIn Corporation

You are responsible for complying with the terms of service of these third-party platforms.

API Key Security

API keys are stored using Chrome's chrome.storage.sync API, which provides encryption at rest
API keys are never sent to any server we control
API keys are transmitted only to the respective AI provider (Google or OpenAI) using HTTPS
Gemini API keys are sent via x-goog-api-key HTTP header (not in URL parameters)
You can delete your API keys at any time through the Extension's options page

User Responsibilities

You are responsible for:

Securing your API keys and not sharing them with others
Monitoring your API usage and associated costs with your AI provider
Reviewing and editing AI-generated content before posting on LinkedIn
Complying with LinkedIn's Terms of Service and content policies

Data Retention

Settings and API keys are stored indefinitely until you remove them or uninstall the Extension
Browser AI download state is stored in Chrome's local storage until cleared
Temporary prompts (free tier mode) expire after 5 minutes
Uninstalling the Extension removes all locally stored data

GDPR and CCPA Compliance

We do not collect or store personal data on our own servers
All user content and settings reside locally in your browser
Anonymous error reports are sent to Sentry (EU-hosted) with IP address scrubbing enabled, so no IP addresses are stored. Sentry processes data under their Data Processing Agreement
You have full control over your data through Chrome's extension settings

Children's Privacy

The Extension is not intended for use by children under 13. We do not knowingly collect data from children.

Changes to This Policy

We may update this privacy policy from time to time. The "Last Updated" date at the top indicates when changes were made. Continued use of the Extension after changes constitutes acceptance of the updated policy.

Contact

For questions or concerns about this privacy policy:

Developer: https://yogendrasingh.in
Support: [email protected]

Disclaimer

This Extension is provided "AS IS" without warranties. We are not affiliated with LinkedIn Corporation, Google LLC, or OpenAI. Use of this Extension is at your own risk.

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