Privacy policy

1. Information we collect

What we DON'T collect

5kVIZ is designed with privacy by design. It has no servers, so we never collect, receive or store:

• parkrun results or performance data, for any parkrunner or event
• Personal information (name, email, date of birth, location)
• Browsing history or behaviour
• Any data from a parkrun account
• Analytics about how 5kVIZ is used

What 5kVIZ keeps on your device

5kVIZ saves a few things in your browser's own extension storage, on your device. We never see or receive any of it:

• Saved parkrunners: the parkrun ID, name and country of each parkrunner you save, and a date of birth if you save yourself from parkrun's profile update page
• Saved events: the name and country of each event you save
• Your parkrun ID: noted when you open your own profile page on parkrun, so 5kVIZ can recognise it in results
• Preferences: whether charts animate, and whether you've seen the latest changelog

Browser sync

Your browser may sync its extension storage across your own devices through the account you're signed in to it with (for example, your Google account in Chrome), as it can with bookmarks and settings. That happens between you and your browser; 5kVIZ itself never sees or receives it.

2. How 5kVIZ works

Local-first architecture

5kVIZ operates entirely within your browser:

• It reads the parkrun pages you open, in your browser, to build its charts and images
• All calculations, analytics, and visualisations happen on your device
• It never sends data anywhere. Its only network requests load its own files, bundled with the extension: fonts, image templates, icons and its changelog
• Downloads and shareable images are made on your device, and go wherever you save or share them (on iPhone and iPad, through the share sheet)

Data processing

When you open a parkrun results page that 5kVIZ adds to:

1. 5kVIZ reads the data already displayed on the page
2. Analytics are calculated in real-time using JavaScript
3. Charts and visualisations are generated in your browser

Results are parsed from the page you're looking at and held in memory only while that page is open — they are never written anywhere. The only things 5kVIZ saves are those listed in section 1.

Your parkrun profile

On parkrun's profile update page, 5kVIZ reads your own parkrun ID, name, date of birth and country, so it can save you as a parkrunner in 5kVIZ. They're kept in your browser's extension storage, like any other saved parkrunner.

3. Browser permissions

Required permissions

5kVIZ requests these minimal permissions:

• Access to parkrun's sites: Every parkrun country's site, plus admin.parkrun.com for parkrun's profile update page. 5kVIZ only runs on the results and profile pages it adds to
• Storage: To save parkrunners, events and preferences in your browser's own extension storage
• Downloads (Chrome only): For saving shareable images and CSV files to your device. Safari doesn't need this permission: on a Mac it saves files as normal downloads, and on iPhone and iPad they go through the share sheet

Allowing and removing access

Depending on your browser, access to parkrun's sites is granted when you install 5kVIZ, or you allow it with one click on 5kVIZ's welcome page or from its toolbar button. In Safari on Mac, iPhone and iPad, you allow it with that one click, and can change it at any time in Safari's settings. In any browser, you can review or change it in the browser's extension settings.

What we don't request

Unlike many extensions, 5kVIZ does not request:

• Access to all websites
• Access to your browsing history, tabs or bookmarks
• Camera, microphone, or location permissions

4. Website privacy

5kviz.com website

Our website operates separately from the browser extension:

• Analytics: We use Umami analytics to understand website usage patterns - this data is anonymised and privacy-focused
• No personal data collection: We don't collect personal information directly through our website
• Third-party services: We minimise third-party integrations and disclose any used

Cookies

Our website uses minimal cookies:

• Essential cookies: Required for basic website functionality
• Analytics cookies: Our analytics provider, Umami, does not use cookies at all. It records anonymised page views without setting anything on your device or tracking you between sites.
• No advertising cookies: We don't use cookies for advertising or behavioural tracking

5. Data sharing and disclosure

No data sharing

Because 5kVIZ collects nothing, there's nothing to share. We do not:

• Sell your information to third parties
• Share data with advertisers
• Provide data to analytics companies
• Share information with parkrun or any other organisations

parkrun

5kVIZ is independent and not affiliated with parkrun. It reads parkrun's pages in your browser as you open them, and sends nothing to parkrun or anyone else.

Legal requirements

In the unlikely event that we're legally required to disclose information:

• We would only disclose information we actually possess (very limited)
• We would notify affected users unless legally prohibited
• We would challenge overbroad requests

6. Your Rights (GDPR Compliance)

European Union residents

Under GDPR, you have these rights:

• Right to access: Request what data we have (which is minimal)
• Right to rectification: Correct any inaccurate information
• Right to erasure: Request deletion of your data
• Right to portability: Receive your data in a portable format
• Right to object: Object to processing of your data

Exercising your rights

To exercise these rights:

• Email us at hello@lumintica.com
• Include details about your specific request
• We'll respond within 30 days
• No fee required for reasonable requests

7. Security Measures

Technical security

We protect the limited data we do handle:

• Secure hosting: Website hosted with security best practices
• Encrypted transmission: All website communications use HTTPS
• Minimal data retention: We keep only what's necessary
• Regular updates: Extension and website security regularly reviewed

Extension security

The 5kVIZ browser extension is designed for security:

• No requests to any server: its only network requests load files bundled with the extension
• Minimal permissions model
• Regular security reviews

8. Children's privacy

5kVIZ is for anyone who takes part in parkrun.

• Open to everyone: There's no age restriction. If you run, walk, volunteer or just like looking at the data, it's for you
• Nothing collected, at any age: We hold no personal information about anyone, so there's nothing for us to hold about a child either
• junior parkrun isn't charted yet: 2k events are left out of the statistics so they don't distort 5k averages — a limit on what we chart, not on who can use it
• Parental supervision: As with any browser extension, we'd suggest a parent or guardian is involved when a younger parkrunner installs one

9. International transfers

5kVIZ is developed by a UK-based company:

• UK based: Lumintica Studio operates from the United Kingdom
• Local processing: Your parkrun data never reaches us. It stays in your browser, and on any of your own devices your browser syncs it to
• GDPR compliance: We follow UK and EU data protection standards

10. Changes to This policy

We may update this privacy policy occasionally:

• Notification: Material changes will be communicated here
• Effective date: Changes take effect when posted with new date
• Review opportunity: You can review changes before they take effect
• Contact us: Questions about changes can be directed to hello@lumintica.com

11. Contact information

Data controller

Lumintica Studio
United Kingdom

Privacy contact

For privacy-related questions or requests:

• Email: hello@lumintica.com
• Response time: Within 30 days for formal requests, 24-48 hours for general questions

Supervisory authority

If you're not satisfied with our response, you can contact:

UK: Information Commissioner's Office (ICO)
EU: Your local data protection authority

Last updated: 14 October 2026