Activate Tab
curl --request POST \
--url https://api.example.com/browser/sessions/{id}/pages/{pageId}/activateimport requests
url = "https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate"
response = requests.post(url)
print(response.text)const options = {method: 'POST'};
fetch('https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate"
req, _ := http.NewRequest("POST", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
response = http.request(request)
puts response.read_body{
"success": true,
"pageId": "<string>"
}Browser Sessions
Activate Tab
Make the given tab the active one for subsequent session-scoped operations.
POST
/
browser
/
sessions
/
{id}
/
pages
/
{pageId}
/
activate
Activate Tab
curl --request POST \
--url https://api.example.com/browser/sessions/{id}/pages/{pageId}/activateimport requests
url = "https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate"
response = requests.post(url)
print(response.text)const options = {method: 'POST'};
fetch('https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate"
req, _ := http.NewRequest("POST", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.example.com/browser/sessions/{id}/pages/{pageId}/activate")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
response = http.request(request)
puts response.read_body{
"success": true,
"pageId": "<string>"
}Overview
The/browser/sessions/{id}/pages/{pageId}/activate endpoint switches the session’s active tab to the one identified by pageId. The tab is brought to the foreground and becomes the target for all subsequent session-scoped operations (mouse, keyboard, navigate, content, screenshot, PDF).
This avoids having to pass pageId on every request — set the active tab once, then use the compact session-scoped endpoints.
Path Parameters
string
required
Browser session ID (UUID). Create via
POST /browser/sessions.string
required
CDP target identifier of the tab to activate. 32-character uppercase hex. Obtain via
POST /pages or GET /pages.Body
No request body. Send an empty request.Example Request
curl -X POST "https://api.scrapengine.io/api/v1/browser/sessions/0f2b1f6a-88ac-4d25-bc58-67a6f4b4a001/pages/EA5E9AA71C7A91C467F8CDBB266EE5E0/activate" \
-H "Authorization: Bearer YOUR_API_KEY"
const response = await fetch(
"https://api.scrapengine.io/api/v1/browser/sessions/0f2b1f6a-88ac-4d25-bc58-67a6f4b4a001/pages/EA5E9AA71C7A91C467F8CDBB266EE5E0/activate",
{
method: "POST",
headers: {
"Authorization": "Bearer YOUR_API_KEY",
},
},
);
const data = await response.json();
import requests
url = "https://api.scrapengine.io/api/v1/browser/sessions/0f2b1f6a-88ac-4d25-bc58-67a6f4b4a001/pages/EA5E9AA71C7A91C467F8CDBB266EE5E0/activate"
headers = {
"Authorization": "Bearer YOUR_API_KEY",
}
response = requests.post(url, headers=headers)
data = response.json()
Response
Success Response (200)
boolean
true when the tab was activated.string
CDP target identifier of the now-active tab (echoed back for correlation).
{
"success": true,
"pageId": "EA5E9AA71C7A91C467F8CDBB266EE5E0"
}
Error Responses
| Status | Description |
|---|---|
401 | Unauthorized — invalid or missing API key. |
404 | Session not found, not owned by the caller, or no tab with the given pageId exists in the session. |
408 | Navigation timeout — rarely occurs, set if the underlying bring-to-front command stalls. |
503 | The browser session is temporarily unreachable. |
Notes
- Subsequent session-scoped operations (mouse, keyboard, navigate, content, screenshot) target whichever tab is currently active. Use this to swap context between tabs without needing per-request
pageIdplumbing. - The active tab also reflects in noVNC live-view — activating a tab brings it to the foreground for anyone watching.
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