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misomoon vs PostHog

PostHog is a product analytics suite with session replay and feature flags, and self-hosting it is officially unsupported. misomoon does web analytics only: cookieless, a 1 KB core tracker, and nothing to run but a Cloudflare deploy.

5 rows where misomoon does better 1 where PostHog does Checked 25 October 2026

misomoon

License
MIT
What self-hosting needs
A Cloudflare account
Cookieless by default
Yes
Tracker
1.0 KB core

PostHog

License
MIT, except the proprietary ee/ folder5
What self-hosting needs
Docker with ClickHouse, Postgres, Kafka, Redis, MinIO; 4 vCPU and 16 GB RAM2
Cookieless by default
No, cookieless mode is opt-in1
Tracker
106 KB

The short answer

Pick misomoon if

  • You want web analytics without cookies by default. PostHog’s cookieless mode is opt-in.1
  • You want to self-host without ClickHouse, Kafka, Redis and 16 GB of RAM.2
  • You care about page weight: PostHog’s full bundle is 106 KB gzipped.3

Pick PostHog if

  • You need session replay, feature flags or experiments. misomoon has none of these.2
  • You need a SOC 2 Type 2 vendor, an audit log and two-factor sign-in.4

Side by side

misomoonPostHogEdge
LicenseMITMIT, except the proprietary ee/ folder5Even
What self-hosting needsA Cloudflare accountDocker with ClickHouse, Postgres, Kafka, Redis, MinIO; 4 vCPU and 16 GB RAM2misomoon
Self-hosting supportSupported“Officially unsupported”2misomoon
Cookieless by defaultYesNo, cookieless mode is opt-in1misomoon
Core Web VitalsYesYes6Even
Official MCP serverBuilt inYes7Even
Import from GoogleYesManual, through BigQuery8misomoon
Tracker, gzipped1.0 KB core, 1.8 KB Light, 4.8 KB with every feature106 KB, full bundle3misomoon
SOC 2 or ISO 27001No (Cloudflare has both)SOC 2 Type 24PostHog

Page weight

Tracker size, gzipped, as we measured it
  1. misomoon, core 1.0 KB
  2. misomoon, Light 1.8 KB
  3. misomoon, every feature 4.8 KB
  4. PostHog 106 KB

Switch from PostHog

  1. 1

    Keep PostHog for replay and flags if you use them, and move page analytics to misomoon.

  2. 2

    Send your custom events to misomoon with the same names through the SDK.

  3. 3

    Import your Google Analytics history, if you have one, in Settings.

Questions

Can misomoon replace PostHog entirely?

Only if you use PostHog for web analytics. misomoon has no session replay, feature flags or experiments.

Is misomoon lighter?

Yes. The misomoon tracker is 1.0 KB gzipped at its core and 4.8 KB with every feature. PostHog’s full bundle measured 106 KB.

Do I need a consent banner?

misomoon sets no cookies by default. Whether you need a banner depends on your country and the rest of your site. This is not legal advice.

Sources

misomoon’s own facts are in its docs. Prices and features change: follow the links to confirm.

  1. posthog.com/docs/libraries/js/persistence checked 24 October 2026
  2. posthog.com/docs/self-host checked 24 October 2026
  3. github.com/jackzard/misomoon/blob/main/docs/comparison.md checked 24 October 2026
  4. trust.posthog.com checked 25 October 2026
  5. github.com/PostHog/posthog checked 24 October 2026
  6. posthog.com/docs/web-analytics/web-vitals checked 24 October 2026
  7. posthog.com/docs/model-context-protocol checked 24 October 2026
  8. posthog.com/docs/migrate/google-analytics checked 24 October 2026

Other comparisons

Run both for a week.

Add misomoon next to PostHog and compare the numbers on your own site. It’s one script tag, and it sets no cookies.

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