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c15t vs Didomi

Choose c15t for native framework components, open-source consent logic and backend ownership. Compare Didomi's SDKs, notice console and experiments.

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Choose c15t for consent that follows your product workflow.

c15t is the stronger fit when your developers want to own the consent interface, vendor rules and backend implementation. Changes can follow the same code review and release process as the application.

Didomi combines a shared notice console with SDKs, APIs and consent analytics. It also supports React and custom interfaces, so developer access is common to both products.

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Timed on the same page.

Cookiebench loads each consent manager 15 times on the same Next.js page and times how long its banner takes to appear. Times read on 9 October 2026.

c15t

65ms

On desktop. 241 ms on a mid-tier phone.

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Didomi

498ms

On desktop. 4.39 s on a mid-tier phone.

See the evidence

c15t’s banner appears 433 ms sooner than Didomi’s on desktop.

Compare the work your team controls.

What you needc15tDidomi
Integrate with application codeNative adapters across web frameworksHosted Web SDK and a React component
Build a custom interfaceThemes, component parts and headless APIsNotice customisation and APIs for your own UI
Read vendor and purpose choicesFramework state and vendor controlsWeb SDK methods and events
Choose the Next.js responseStreamed, awaited or browser pathsHosted SDK integration. Test the required server flow separately
Run the backend yourselfOpen-source backend with your own databaseDidomi platform and consent APIs
Keep consent evidenceInth hosts the backend and stores records in its database. Self-hosting is optionalConsent events and history
Compare banner variantsPresentation experiments with your flags or built-in assignmentA/B tests and consent analytics
Publish notices from a shared consoleInth service workflow. No equivalent business console bundled in the packagesConsole for marketing, legal and engineering teams

Use one consent state across the product.

c15t lets your privacy controls, gated content and registered vendors use the same state. A designer can change the interface while a developer checks its behaviour in application tests.

Start with the supplied components or build a headless interface. Use vendor controls to connect an individual service to the visitor's choices.

Didomi's React component loads its SDK and receives notice configuration from the Console. c15t gives you native components plus source code for the consent engine.

Moving off Didomi across many sites?

Inth builds c15t and runs migrations for large teams, from the first audit to the day you remove the old script.

Talk to Inth

Install c15t. Get 42 integrations.

c15t maintains each typed helper. Most helpers load their vendor only after consent, and stop it when the visitor withdraws consent.

Import each helper from @c15t/integrations.

Browse the integrations

Start in minutes.

Paste this line into your agent. It reads the setup brief and does each step.

Ask your coding agent
Set up c15t in my app: c15t.com/SKILL.md

The setup brief is at /SKILL.md. For the docs, agents can read /llms.txt and /llms-full.txt, or use the MCP server at with no sign-in.

Inth hosts the backend, the policy rules and the IAB CMP ID.

Compare c15t with your consent tool.

The facts about each tool come from its own published pages.

Read the comparison overview