diff --git a/content/docs/web-analytics/configuration.mdx b/content/docs/web-analytics/configuration.mdx
index 0f3c980..5688f09 100644
--- a/content/docs/web-analytics/configuration.mdx
+++ b/content/docs/web-analytics/configuration.mdx
@@ -139,13 +139,14 @@ export function diagnostics(): AnalyticsExtension {
 The context exposes `siteKey`, `baseUrl`, `debug`, `trackHash`,
 `isCookieless()`, and `on(hook, handler)`.
 
-| Hook            | Payload                   | When it fires                                      |
-| --------------- | ------------------------- | -------------------------------------------------- |
-| `pageChange`    | `{ url }`                 | After a client-side navigation to a new page       |
-| `pageHide`      | `{ persisted, terminal }` | When the page is hidden or unloaded                |
-| `pageShow`      | `{ persisted }`           | When the page is shown, including from the bfcache |
-| `consentChange` | `{ cookieless }`          | When consent changes while tracking stays enabled  |
-| `error`         | `{ error }`               | When `reportError` is called                       |
+| Hook             | Payload                   | When it fires                                      |
+| ---------------- | ------------------------- | -------------------------------------------------- |
+| `pageChange`     | `{ url }`                 | After a client-side navigation to a new page       |
+| `pageHide`       | `{ persisted, terminal }` | When the page is hidden or unloaded                |
+| `pageShow`       | `{ persisted }`           | When the page is shown, including from the bfcache |
+| `consentChange`  | `{ cookieless }`          | When consent changes while tracking stays enabled  |
+| `identityChange` | `{ userId }`              | When `identify` sets a user or `logout` clears it  |
+| `error`          | `{ error }`               | When `reportError` is called                       |
 
 Extensions start when tracking starts and stop when the client is destroyed or
 consent is denied. Cleanup receives `discard: true` when consent was revoked.
diff --git a/content/docs/web-analytics/session-replay.mdx b/content/docs/web-analytics/session-replay.mdx
index 0465fa3..08bffde 100644
--- a/content/docs/web-analytics/session-replay.mdx
+++ b/content/docs/web-analytics/session-replay.mdx
@@ -132,16 +132,23 @@ Replay events are buffered in the browser and uploaded in gzip-compressed
 batches. The recorder also flushes when the page is hidden, when the session
 rotates, and when a batch reaches its event or byte limit.
 
-| Option              | Type      | Default   | Description                                                 |
-| ------------------- | --------- | --------- | ----------------------------------------------------------- |
-| `flushInterval`     | `number`  | `15000`   | Milliseconds between uploads                                |
-| `maxEvents`         | `number`  | `1000`    | Events per batch before an early flush                      |
-| `maxBatchSizeBytes` | `number`  | `921600`  | Batch size before an early flush                            |
-| `maxPendingBatches` | `number`  | `30`      | Batches that may wait for upload                            |
-| `maxQueueSizeBytes` | `number`  | `2097152` | Memory limit for buffered replay data                       |
-| `minReplayLengthMs` | `number`  | `3000`    | Recordings shorter than this are discarded                  |
-| `checkoutEveryNms`  | `number`  | `300000`  | Milliseconds between full DOM snapshots                     |
-| `compress`          | `boolean` | `true`    | Gzips batches when the browser supports `CompressionStream` |
+| Option                        | Type      | Default   | Description                                                 |
+| ----------------------------- | --------- | --------- | ----------------------------------------------------------- |
+| `flushInterval`               | `number`  | `5000`    | Milliseconds between uploads                                |
+| `maxEvents`                   | `number`  | `1000`    | Events per batch before an early flush                      |
+| `maxBatchSizeBytes`           | `number`  | `921600`  | Batch size before an early flush                            |
+| `maxLowLatencyBatchSizeBytes` | `number`  | `57344`   | Batch size for the final upload when a recording ends       |
+| `maxPendingBatches`           | `number`  | `30`      | Batches that may wait for upload                            |
+| `maxQueueSizeBytes`           | `number`  | `2097152` | Memory limit for buffered replay data                       |
+| `minReplayLengthMs`           | `number`  | `3000`    | Recordings shorter than this are discarded                  |
+| `checkoutEveryNms`            | `number`  | `300000`  | Milliseconds between full DOM snapshots                     |
+| `checkoutEveryNth`            | `number`  | none      | Events between full DOM snapshots                           |
+| `compress`                    | `boolean` | `true`    | Gzips batches when the browser supports `CompressionStream` |
+
+When a recording ends, for example because the page is closed, the remaining
+events are sent uncompressed in batches of at most
+`maxLowLatencyBatchSizeBytes` so they fit in a request that outlives the page.
+This option can only be lowered from its default.
 
 If the queue limits are reached, capture stops for that recording instead of
 leaving a gap.