Privacy Policy
Last updated: March 26, 2026
Copperline Labs LLC (“we,” “our,” or “us”) operates the Rendex screenshot and rendering API. This Privacy Policy explains how we collect, use, and protect your information when you use rendex.dev and api.rendex.dev (the “Service”).
1. Information We Collect
Account Information
When you create an account, we collect your email address for account management and service notifications.
Payment Information
Payment processing is handled by Stripe. We do not store credit card numbers or bank account details on our servers. Stripe collects and processes your payment information under their privacy policy.
API Request Metadata
For each API call, we log the following metadata for billing accuracy, debugging, and abuse prevention:
- Target URL requested
- Timestamp and response status code
- Response format and size
- Request latency
- IP address of the caller
Generated Content (Screenshots)
Screenshots are generated on Cloudflare Workers and returned directly to you in the API response. We do not store, cache, or retain generated screenshots after delivery. Processing is transient only.
2. How We Use Your Information
- Service provision— Processing API requests and delivering screenshots
- Billing— Tracking API usage for accurate invoicing and overage calculation
- Abuse prevention— Detecting and preventing misuse of the Service
- Service improvement— Analyzing anonymized usage patterns to improve reliability and performance
- Customer support— Responding to your requests and debugging issues
- Legal compliance— Meeting legal obligations and responding to lawful requests
3. Data Retention
| Data Type | Retention Period |
|---|---|
| Account data | While account is active, deleted within 30 days of closure |
| API request metadata | 90 days (aggregated for billing beyond that) |
| Generated screenshots | Not retained — transient processing only |
| Payment data | Per Stripe’s retention policy |
4. Data Sharing and Sub-Processors
We do not sell, rent, or trade your personal information. We share data only with the following service providers, and only as necessary to operate the Service:
| Provider | Purpose | Data Shared |
|---|---|---|
| Cloudflare | Infrastructure, edge compute, browser rendering | API requests, IP addresses |
| Stripe | Payment processing, subscription billing | Email, payment information |
| Unkey | API key management, rate limiting | API key hashes, usage counts |
| Supabase | Database, usage logging | Account data, usage records |
We may also share data when required by law, such as in response to a valid subpoena or court order.
5. Data Security
We implement industry-standard security measures to protect your data:
- All data in transit is encrypted via TLS
- API keys are hashed and verified at the edge via Unkey
- Database access is restricted with row-level security policies
- Infrastructure runs on Cloudflare’s globally distributed edge network
No method of electronic transmission or storage is 100% secure. We cannot guarantee absolute security, but we continuously work to protect your data.
6. Your Rights
Depending on your location, you may have the following rights regarding your personal data:
- Access— Request a copy of the personal data we hold about you
- Correction— Request correction of inaccurate data
- Deletion— Request deletion of your personal data and account
- Portability— Request your data in a portable format
- Opt-out— Opt out of non-essential data processing
To exercise any of these rights, contact us at admin@copperlinelabs.com. We will respond within 30 days.
7. International Data Transfers
The Service runs on Cloudflare’s global edge network. Your API requests are processed at the nearest edge location, which may be in a different jurisdiction than your own. Our sub-processors (listed above) may also process data in various jurisdictions.
8. Children’s Privacy
The Service is not directed at children under 13. We do not knowingly collect personal information from children under 13. If we learn that we have collected information from a child under 13, we will delete it promptly.
9. Cookies and Local Storage
The rendex.dev website uses minimal browser storage:
- Theme preference— Stored in localStorage (not a cookie) to remember your light/dark mode choice
- We do not use third-party tracking cookies or advertising pixels on rendex.dev
The API (api.rendex.dev) does not use cookies. Authentication is handled exclusively via API keys.
10. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of material changes via email. Your continued use of the Service after changes take effect constitutes acceptance of the updated policy.
11. Contact Us
If you have questions about this Privacy Policy or our data practices, contact us at:
Copperline Labs LLC
Sheridan, Wyoming
admin@copperlinelabs.com