Cookie Policy

1. What Are Cookies?

Cookies are small text files stored on your device when you visit a website. They help us remember your preferences, maintain your session, and deliver relevant content.

Cookies can be:

• Session Cookies: Temporary cookies deleted when you close your browser.
• Persistent Cookies: Remain on your device until they expire or you delete them.
• First-Party Cookies: Set by Blackpdf directly.
• Third-Party Cookies: Set by external services we use (e.g., Google Analytics).

2. Cookies We Use

Blackpdf uses the following categories of cookies. None of these cookies access or store your file content.

Essential Cookies

Required for the Service to function. These cannot be disabled.

• Session cookie — maintains your login session and authentication state.
• CSRF token — protects against cross-site request forgery attacks.
• Device ID — anonymous identifier for session security and abuse prevention.

Preference Cookies

Remember your choices and settings to improve your experience.

• Last used tool — remembers which tool you used most recently.
• Settings preferences — stores your chosen options (e.g., compression level, billing toggle).

Analytics Cookies

Help us understand how visitors use the Service so we can improve it.

• Google Analytics (_ga, _gid) — collects anonymous usage data including pages visited, time on site, and referral sources. No file content is ever included.

Advertising Cookies

Used to deliver and measure advertisements for Free tier users only. Pro and Business subscribers do not see ads.

• Google Ads — may serve personalized or non-personalized ads based on anonymous identifiers such as browsing behavior, device type, and approximate location.

3. Local Storage & IndexedDB

In addition to cookies, Blackpdf uses browser storage technologies for certain features:

• localStorage — stores user preferences, authentication state, and tool settings. This data stays on your device.
• sessionStorage — stores temporary session data that is cleared when you close the browser tab.
• IndexedDB — used to store saved signatures and stamps locally on your device for the Sign PDF tool. This data is never uploaded without your action.

These technologies are used solely for functionality and user experience. No file content is stored in these systems beyond what you explicitly save.

4. Google Analytics

We use Google Analytics to collect anonymous usage data such as page visits, user interaction patterns, and error rates. This helps us improve the performance and reliability of Blackpdf.

Google Analytics uses cookies to track aggregate interactions. The data collected does not include any content from your files or personally identifiable information.

You can opt out of Google Analytics by using the Google Analytics Opt-out Browser Add-on.

5. Advertising (Free Tier Only)

Blackpdf displays ads to Free tier users through Google Ads and its partners to support ongoing operations.

• Ads may be personalized or non-personalized depending on your consent preferences.
• Personalized ads use anonymous identifiers (browsing behavior, device info) but never access your files.
• Pro and Business subscribers do not see advertisements.

You can manage your ad personalization preferences at Google Ads Settings.

We comply with Google Ads Data Usage and Consent Policies, including the EU User Consent Policy.

6. Your Cookie Choices

By using Blackpdf, you accept the use of cookies as described in this policy. All cookie categories are enabled by default to provide you with the best experience.

You can change your cookie preferences at any time using the button below or via the "Cookie Settings" link in the footer of any page.

Manage cookie preferences

You can also control cookies through your browser settings. Most browsers allow you to:

• View and delete existing cookies
• Block all or specific cookies
• Receive alerts before cookies are stored
• Disable third-party cookies while allowing first-party cookies

To manage browser storage (localStorage, IndexedDB), use your browser's developer tools or site data settings.

Disabling essential cookies may prevent you from logging in or using core features of the Service.

7. Consent & Legal Basis

By using Blackpdf, you consent to the use of cookies as described in this policy. All cookies are enabled by default. You may update your preferences at any time through the cookie preferences panel on this page or via the "Cookie Settings" link in the site footer.

Under GDPR and similar privacy regulations:

• Essential cookies are necessary for the Service to function and cannot be disabled.
• Analytics cookies are enabled by default. You may opt out at any time via cookie preferences. Opting out stops Google Analytics from collecting data on your activity.
• Advertising cookies are enabled by default for personalized ads on the Free tier. You may opt out of personalized advertising at any time. Opting out does not remove ads entirely — Free tier users will still see non-personalized ads.

Your preferences are stored in a cookie on your device and persist for one year. You can update them at any time.

8. Updates to This Policy

We may update this Cookie Policy to reflect changes in law, technology, or our practices. The latest version will always be available on this page.

Last modified: 31-03-2026

9. Related Policies

For more information on how we handle your data, see our Privacy Policy.

For your rights and obligations, see our Terms of Service.

For technical security details, see our Security Page.