Frontend Quickstart

Already using Sentry? Check out these docs instead. Already using PostHog? Check out these docs instead.

⏱ Estimated Time To Completion: 3 minutes

Decipher supports two SDK options for frontend integration: Sentry and PostHog. Choose the SDK that best fits your needs or integrate both for comprehensive monitoring and analytics.

You can choose to get started with the Sentry SDK by using the HTML script tag or via a package manager below.

Log in to Decipher with your work email. You will receive a snippet to paste into your HTML head, which will look something like the example below:

Initialization (copy and paste)
<script
  src="https://browser.sentry-cdn.com/8.47.0/bundle.tracing.replay.min.js"
  integrity="sha384-VaqNrma84jlgEWxBCMOnatKAHLSjaKGmo8Biuj3NQEg1MrmeukY8s6pnaTgRVjKM"
  crossorigin="anonymous"
></script>
<script>
  Sentry.init({
    dsn: "YOUR_DSN_FROM_DECIPHER", // This will be set for you once you're logged in.
    integrations: [
        Sentry.replayIntegration({
            maskAllText: false,
            blockAllMedia: false,
            maskAllInputs: true
        }),
        // You can optionally specify log levels (see further docs)
        Sentry.captureConsoleIntegration(),
        Sentry.browserTracingIntegration(),
    ],
    replaysOnErrorSampleRate: 1.0,
    replaysSessionSampleRate: 1.0,
  });
</script>

This should be pasted into your website’s HTML head as early as possible. You can configure some of the parameters (e.g. to adjust capture rate).

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

For Next.js applications, ensure that this code is placed in a file that includes the "use client" directive at the top.

// Set user information in Decipher via the Sentry TypeScript SDK
Sentry.setUser({
  "email": "jane.doe@example.com",  // Recommended identifier to set
  "id": "your_internal_unique_identifier", // Optional: use if email not available
  "username": "unique_username", // Optional: use if email not available
  "account": "AcmeCo",  // Recommended: Which account/organization is this user a member of?
  "created_at": "2025-04-01T15:30:00Z", // Recommended: date this user signed up.
  "role": "client", // Optional: what is this user's role/type?
  // You can add more user information here as key/value pairs.
});

Once you’re done, simply use your website to validate that Decipher is collecting session replay data.

Log in to Decipher with your work email. You will receive a snippet to paste into your HTML head, which will look something like the example below:

Initialization (copy and paste)
<script
  src="https://browser.sentry-cdn.com/8.47.0/bundle.tracing.replay.min.js"
  integrity="sha384-VaqNrma84jlgEWxBCMOnatKAHLSjaKGmo8Biuj3NQEg1MrmeukY8s6pnaTgRVjKM"
  crossorigin="anonymous"
></script>
<script>
  Sentry.init({
    dsn: "YOUR_DSN_FROM_DECIPHER", // This will be set for you once you're logged in.
    integrations: [
        Sentry.replayIntegration({
            maskAllText: false,
            blockAllMedia: false,
            maskAllInputs: true
        }),
        // You can optionally specify log levels (see further docs)
        Sentry.captureConsoleIntegration(),
        Sentry.browserTracingIntegration(),
    ],
    replaysOnErrorSampleRate: 1.0,
    replaysSessionSampleRate: 1.0,
  });
</script>

This should be pasted into your website’s HTML head as early as possible. You can configure some of the parameters (e.g. to adjust capture rate).

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

For Next.js applications, ensure that this code is placed in a file that includes the "use client" directive at the top.

// Set user information in Decipher via the Sentry TypeScript SDK
Sentry.setUser({
  "email": "jane.doe@example.com",  // Recommended identifier to set
  "id": "your_internal_unique_identifier", // Optional: use if email not available
  "username": "unique_username", // Optional: use if email not available
  "account": "AcmeCo",  // Recommended: Which account/organization is this user a member of?
  "created_at": "2025-04-01T15:30:00Z", // Recommended: date this user signed up.
  "role": "client", // Optional: what is this user's role/type?
  // You can add more user information here as key/value pairs.
});

Once you’re done, simply use your website to validate that Decipher is collecting session replay data.

Install the SDK

Using your package manager of choice, install the @sentry/browser SDK. This is the only package you need, no matter what framework and libraries your frontend is using.

npm install @sentry/browser --save

Log in to Decipher with your work email. You will receive a snippet to initialize the SDK — paste this at the root of your project frontend/client code. It will look something like this:

Sentry.init({
  dsn: "YOUR_DSN_FROM_DECIPHER", // This will be set for you once you're logged in.
  integrations: [
      Sentry.replayIntegration({
          maskAllText: false,
          blockAllMedia: false,
          maskAllInputs: true
      }),
      // You can optionally specify log levels (see further docs)
      Sentry.captureConsoleIntegration(),
      Sentry.browserTracingIntegration(),
  ],
  replaysOnErrorSampleRate: 1.0,
  replaysSessionSampleRate: 1.0,
  tracesSampleRate: 1.0,
});

You can configure some of the parameters (e.g. to adjust capture rate).

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

For Next.js applications, ensure that this code is placed in a file that includes the "use client" directive at the top.

// Set user information in Decipher via the Sentry TypeScript SDK
Sentry.setUser({
  "email": "jane.doe@example.com",  // Recommended identifier to set
  "id": "your_internal_unique_identifier", // Optional: use if email not available
  "username": "unique_username", // Optional: use if email not available
  "account": "AcmeCo",  // Recommended: Which account/organization is this user a member of?
  "created_at": "2025-04-01T15:30:00Z", // Recommended: date this user signed up.
  "role": "client", // Optional: what is this user's role/type?
  // You can add more user information here as key/value pairs.
});

Once you’re done, simply use your website to validate that Decipher is collecting session replay data.

You can choose to get started with the Sentry SDK by using the HTML script tag or via a package manager below.

Log in to Decipher with your work email. You will receive a snippet to paste into your HTML head, which will look something like the example below:

Initialization (copy and paste)
<script
  src="https://browser.sentry-cdn.com/8.47.0/bundle.tracing.replay.min.js"
  integrity="sha384-VaqNrma84jlgEWxBCMOnatKAHLSjaKGmo8Biuj3NQEg1MrmeukY8s6pnaTgRVjKM"
  crossorigin="anonymous"
></script>
<script>
  Sentry.init({
    dsn: "YOUR_DSN_FROM_DECIPHER", // This will be set for you once you're logged in.
    integrations: [
        Sentry.replayIntegration({
            maskAllText: false,
            blockAllMedia: false,
            maskAllInputs: true
        }),
        // You can optionally specify log levels (see further docs)
        Sentry.captureConsoleIntegration(),
        Sentry.browserTracingIntegration(),
    ],
    replaysOnErrorSampleRate: 1.0,
    replaysSessionSampleRate: 1.0,
  });
</script>

This should be pasted into your website’s HTML head as early as possible. You can configure some of the parameters (e.g. to adjust capture rate).

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

For Next.js applications, ensure that this code is placed in a file that includes the "use client" directive at the top.

// Set user information in Decipher via the Sentry TypeScript SDK
Sentry.setUser({
  "email": "jane.doe@example.com",  // Recommended identifier to set
  "id": "your_internal_unique_identifier", // Optional: use if email not available
  "username": "unique_username", // Optional: use if email not available
  "account": "AcmeCo",  // Recommended: Which account/organization is this user a member of?
  "created_at": "2025-04-01T15:30:00Z", // Recommended: date this user signed up.
  "role": "client", // Optional: what is this user's role/type?
  // You can add more user information here as key/value pairs.
});

Once you’re done, simply use your website to validate that Decipher is collecting session replay data.

Log in to Decipher with your work email. You will receive a snippet to paste into your HTML head, which will look something like the example below:

Initialization (copy and paste)
<script
  src="https://browser.sentry-cdn.com/8.47.0/bundle.tracing.replay.min.js"
  integrity="sha384-VaqNrma84jlgEWxBCMOnatKAHLSjaKGmo8Biuj3NQEg1MrmeukY8s6pnaTgRVjKM"
  crossorigin="anonymous"
></script>
<script>
  Sentry.init({
    dsn: "YOUR_DSN_FROM_DECIPHER", // This will be set for you once you're logged in.
    integrations: [
        Sentry.replayIntegration({
            maskAllText: false,
            blockAllMedia: false,
            maskAllInputs: true
        }),
        // You can optionally specify log levels (see further docs)
        Sentry.captureConsoleIntegration(),
        Sentry.browserTracingIntegration(),
    ],
    replaysOnErrorSampleRate: 1.0,
    replaysSessionSampleRate: 1.0,
  });
</script>

This should be pasted into your website’s HTML head as early as possible. You can configure some of the parameters (e.g. to adjust capture rate).

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

For Next.js applications, ensure that this code is placed in a file that includes the "use client" directive at the top.

// Set user information in Decipher via the Sentry TypeScript SDK
Sentry.setUser({
  "email": "jane.doe@example.com",  // Recommended identifier to set
  "id": "your_internal_unique_identifier", // Optional: use if email not available
  "username": "unique_username", // Optional: use if email not available
  "account": "AcmeCo",  // Recommended: Which account/organization is this user a member of?
  "created_at": "2025-04-01T15:30:00Z", // Recommended: date this user signed up.
  "role": "client", // Optional: what is this user's role/type?
  // You can add more user information here as key/value pairs.
});

Once you’re done, simply use your website to validate that Decipher is collecting session replay data.

Install the SDK

Using your package manager of choice, install the @sentry/browser SDK. This is the only package you need, no matter what framework and libraries your frontend is using.

npm install @sentry/browser --save

Log in to Decipher with your work email. You will receive a snippet to initialize the SDK — paste this at the root of your project frontend/client code. It will look something like this:

Sentry.init({
  dsn: "YOUR_DSN_FROM_DECIPHER", // This will be set for you once you're logged in.
  integrations: [
      Sentry.replayIntegration({
          maskAllText: false,
          blockAllMedia: false,
          maskAllInputs: true
      }),
      // You can optionally specify log levels (see further docs)
      Sentry.captureConsoleIntegration(),
      Sentry.browserTracingIntegration(),
  ],
  replaysOnErrorSampleRate: 1.0,
  replaysSessionSampleRate: 1.0,
  tracesSampleRate: 1.0,
});

You can configure some of the parameters (e.g. to adjust capture rate).

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

For Next.js applications, ensure that this code is placed in a file that includes the "use client" directive at the top.

// Set user information in Decipher via the Sentry TypeScript SDK
Sentry.setUser({
  "email": "jane.doe@example.com",  // Recommended identifier to set
  "id": "your_internal_unique_identifier", // Optional: use if email not available
  "username": "unique_username", // Optional: use if email not available
  "account": "AcmeCo",  // Recommended: Which account/organization is this user a member of?
  "created_at": "2025-04-01T15:30:00Z", // Recommended: date this user signed up.
  "role": "client", // Optional: what is this user's role/type?
  // You can add more user information here as key/value pairs.
});

Once you’re done, simply use your website to validate that Decipher is collecting session replay data.

You can choose to get started with the PostHog SDK by using the HTML script tag or via a package manager below.

Log in to Decipher with your work email. You will receive a snippet to paste into your HTML head, which will look something like the example below:

Initialization (copy and paste)
<script>
  !function(t,e){var o,n,p,r;e.__SV||(window.posthog=e,e._i=[],e.init=function(i,s,a){function g(t,e){var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}(p=t.createElement("script")).type="text/javascript",p.async=!0,p.src=s.api_host+"/static/array.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;for(void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e},u.people.toString=function(){return u.toString(1)+".people (stub)"},o="capture identify alias people.set people.set_once set_config register register_once unregister opt_out_capturing has_opted_out_capturing opt_in_capturing reset isFeatureEnabled onFeatureFlags getFeatureFlag getFeatureFlagPayload reloadFeatureFlags group updateEarlyAccessFeatureEnrollment getEarlyAccessFeatures getActiveMatchingSurveys getSurveys".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);
  posthog.init('YOUR_API_KEY_FROM_POSTHOG', {api_host: 'https://app.getdecipher.com'});
</script>

This should be pasted into your website’s HTML head as early as possible.

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

// Set user information in Decipher via the PostHog SDK
posthog.identify('user-unique-id', {
  email: 'jane.doe@example.com',
  name: 'Jane Doe',
  account: 'AcmeCo',
  created_at: '2025-04-01T15:30:00Z',
  role: 'client',
  // You can add more user information here as key/value pairs
});

Once you’re done, simply use your website to validate that Decipher is collecting event data.

Log in to Decipher with your work email. You will receive a snippet to paste into your HTML head, which will look something like the example below:

Initialization (copy and paste)
<script>
  !function(t,e){var o,n,p,r;e.__SV||(window.posthog=e,e._i=[],e.init=function(i,s,a){function g(t,e){var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}(p=t.createElement("script")).type="text/javascript",p.async=!0,p.src=s.api_host+"/static/array.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;for(void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e},u.people.toString=function(){return u.toString(1)+".people (stub)"},o="capture identify alias people.set people.set_once set_config register register_once unregister opt_out_capturing has_opted_out_capturing opt_in_capturing reset isFeatureEnabled onFeatureFlags getFeatureFlag getFeatureFlagPayload reloadFeatureFlags group updateEarlyAccessFeatureEnrollment getEarlyAccessFeatures getActiveMatchingSurveys getSurveys".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);
  posthog.init('YOUR_API_KEY_FROM_POSTHOG', {api_host: 'https://app.getdecipher.com'});
</script>

This should be pasted into your website’s HTML head as early as possible.

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

// Set user information in Decipher via the PostHog SDK
posthog.identify('user-unique-id', {
  email: 'jane.doe@example.com',
  name: 'Jane Doe',
  account: 'AcmeCo',
  created_at: '2025-04-01T15:30:00Z',
  role: 'client',
  // You can add more user information here as key/value pairs
});

Once you’re done, simply use your website to validate that Decipher is collecting event data.

Install the SDK

Using your package manager of choice, install the PostHog SDK:

npm install posthog-js

Log in to Decipher with your work email. You will receive a snippet to initialize the SDK — paste this at the root of your project frontend/client code. It will look something like this:

import posthog from 'posthog-js';

posthog.init('YOUR_API_KEY_FROM_POSTHOG', {
  api_host: 'YOUR_API_HOST_FROM_DECIPHER' // e.g. https://ingest.getdecipher.com/7563663925502040
});

Identify Users

Identify users where user information is available in your application frontend, typically after authentication or login.

// Set user information in Decipher via the PostHog SDK
posthog.identify('user-unique-id', {
  email: 'jane.doe@example.com',
  name: 'Jane Doe',
  account: 'AcmeCo',
  created_at: '2025-04-01T15:30:00Z',
  role: 'client',
  // You can add more user information here as key/value pairs
});

Once you’re done, simply use your website to validate that Decipher is collecting event data.

Need help? Get white-glove onboarding support from the team, totally free.

Introduction

Frontend Frameworks

Backend Frameworks

Features

Advanced

Migrations