What does heroku.com track?
Before any consent, heroku.com loaded 2 tracking companies and set 0 advertising or analytics cookies.
That's fewer tracking companies than most sites we scanned: 56% of the 2,450 sites we checked loaded more.
Scanned October 2, 2026 from Germany, loading www.heroku.com once and clicking nothing. How we scan
- Tracking companies
- 2
- Tracking cookies
- 0
- Third-party hosts
- 13
- Cookies in total
- 5
Consent banner
The page loaded OneTrust, a consent management platform. Everything below was recorded before anyone answered it. 2 tracking companies still loaded while it was unanswered.
Companies contacted before consent
2 of the 7 companies it contacted before consent were analytics companies.
- Parse.ly3 requestsAnalytics
cdn.parsely.com, api.parsely.com, p1.parsely.com
- Google Analytics1 requestAnalytics
www.googletagmanager.com
Other third parties (content delivery, consent, functional, unclassified)
- herokucdn.com2 requestsUnclassified
www.herokucdn.com
- OneTrust2 requestsConsent banner
geolocation.onetrust.com, cookies-data.onetrust.io
- Google9 requestsFunctional
www.gstatic.com, www.google.com, fonts.gstatic.com
- WordPress.com2 requestsFunctional
stats.wp.com, pixel.wp.com
- Cloudflare8 requestsContent delivery
cdnjs.cloudflare.com
Cookies set before consent
| Cookie | Purpose | Set by | Lasts |
|---|---|---|---|
| Unclassified | www.heroku.com | Session | |
| _OT_sm | Unclassified | www.heroku.com | 1 day |
| _parsely_session | Functional | heroku.com | Under a day |
| _parsely_visitor | Functional | heroku.com | 13 months |
| OptanonConsent | Functional | heroku.com | 12 months |
Understanding this page
- How to see which cookies and trackers a website loads
A hands-on walkthrough for checking what a site sets before you've clicked anything, using Chrome and Firefox's built-in tools, plus how CookieTosser automates the same check every month.
- What counts as valid cookie consent in the EU
The rules that actually govern cookie banners — the ePrivacy Directive, the GDPR consent standard, the Planet49 ruling, the strictly-necessary exemption, and what "reject" has to offer compared with "accept.
- Consent management platforms explained
What a CMP banner is actually doing behind the scenes, how the IAB's TCF standard and Google's Consent Mode v2 fit in, and why a banner being present is no guarantee that nothing loads before you answer it.