HTTP Request Checker

List the HTTP requests that occur when loading a URL

UpdatesAdd summary of total requests and combined size to HTTP Request ViewerView Updates

Features

List all requests

Display every request that occurs during page loading, by URL

Measure processing time across 12 items

Visualize the time taken at each stage, such as DNS, TCP, and rendering

Organize by domain and type

Aggregate the breakdown by source domain and by type such as image or CSS

Capture with a real browser

Capture even requests generated dynamically by JS execution without missing any

How to use

Enter a URL

Paste the URL of the page you want to analyze into the input field

Run the analysis

Press the run button to load the specified URL and analyze the communication

Check the results

Display the request list, domain list, and processing-time breakdown

Use cases

Investigating display speed

Identify slow-loading communication and pinpoint areas for improvement

Reducing unnecessary loads

Find loads of unused images and scripts

Understanding external resources

Check the list of external domains and CDNs the site depends on

Analyzing the structure of other sites

Investigate the resource loading structure of competitor sites for reference

Basic Knowledge

Why Multiple Requests Occur on a Single Page

After the browser receives the initial HTML, it sequentially retrieves CSS, JavaScript, images, and tags from external services that are referenced within it. It is therefore normal for dozens to hundreds of requests to occur when displaying a single page.

Breakdown of Time Required for Display

A single request goes through stages in sequence: DNS address resolution, server connection, response wait, and data reception. By examining which stage is consuming time, you can narrow down the cause of slow display.