diff --git a/src/analytics.ts b/src/analytics.ts
index 0fdf838..073a014 100644
--- a/src/analytics.ts
+++ b/src/analytics.ts
@@ -5,13 +5,36 @@ import { IN_PRODUCTION_MODE, VERSION } from 'env'
 const PUBLIC_KEY = 'd22ec5c9cc874539a51c78388c12e3b0'
 const PROJECT_ID = '1406497'
 
+const errorSet = new Set<string>([
+  'inThisSearch is null', // weird bug in Firefox
+  'The quota has been exceeded.', // caused by other addons in Firefox
+  'NetworkError when attempting to fetch resource.', // network fail in Firefox
+  'Failed to fetch', // network fail in Chrome
+])
+
 const sentryOptions: Sentry.BrowserOptions = {
   dsn: `https://${PUBLIC_KEY}@sentry.io/${PROJECT_ID}`,
   release: VERSION,
   environment: IN_PRODUCTION_MODE ? 'production' : 'development',
   // Not safe to activate all integrations in non-Chrome environments where Gitako may not run in top context
   // https://docs.sentry.io/platforms/javascript/#sdk-integrations
-  integrations: ints => ints.filter(({ name }) => name !== 'TryCatch'),
+  integrations: integrations => integrations.filter(({ name }) => name !== 'TryCatch'),
+  beforeSend(event) {
+    if (event.message) {
+      if (errorSet.has(event.message)) return null
+      errorSet.add(event.message) // prevent reporting duplicated error
+    }
+    return event
+  },
+  beforeBreadcrumb(breadcrumb, hint) {
+    if (breadcrumb.category === 'ui.click') {
+      const ariaLabel = hint?.event?.target?.ariaLabel
+      if (ariaLabel) {
+        breadcrumb.message = ariaLabel
+      }
+    }
+    return breadcrumb
+  },
 }
 Sentry.init(sentryOptions)