π Website Speed Check API – VebAPI
Get detailed insights into your website’s loading speed, HTTP response data, and performance metrics with improvement suggestions.
π Description
The Speed Check API evaluates a webpage's loading time and technical performance. It returns low-level timing data, Lighthouse-style metrics (like LCP, FCP, TTI), and optimization tips. Use this to identify speed bottlenecks and improve overall page performance.
This API is perfect for SEO platforms, website audit tools, performance monitoring apps, and developer utilities.
π― Key Benefits
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β‘ Analyze full page loading performance
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π Get real browser test data with detailed timings
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π Detect render-blocking issues, layout shifts, large DOMs
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π Track key metrics like LCP, FCP, TTI, CLS, and more
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β Useful for Core Web Vitals analysis and performance reporting
π Base URL
https://vebapi.com/api/seo/loadingspeeddata
π₯ Input Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
website |
string | β Yes | The full website domain (with or without protocol). Example: codeconia.com |
Headers Required:
X-API-KEY: YOUR_API_KEY
Content-Type: application/json
π€ Output Response
The response is a JSON object with multiple sections:
data (Technical Network Stats)
| Field | Type | Description |
|---|---|---|
url |
string | Final URL tested |
http_code |
int | HTTP status code |
total_time |
float | Total page load time in seconds |
connect_time |
float | Time to establish TCP connection |
starttransfer_time |
float | Time to first byte |
redirect_url |
string | Redirected URL (if any) |
primary_ip |
string | Server IP |
http_version |
int | HTTP version used |
local_ip |
string | IP from which request was made |
speed (Performance Summary)
| Field | Type | Description |
|---|---|---|
timing |
int | Total time in ms |
score |
int | Overall performance score (out of 100) |
userAgent |
string | User agent used during the test |
warning |
string | Any redirects or test issues detected |
audit (Performance Metrics)
Each object in the audit array includes:
| Field | Type | Description |
|---|---|---|
title |
string | Name of the metric (e.g. Largest Contentful Paint) |
description |
string | Explanation of what it measures |
score |
int | Score (0–100) |
displayValue |
string | Human-readable value (e.g. 2.1 s, 0 ms) |