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What is PerfDelta?

PerfDelta serves as a specialized online platform aimed at assessing and monitoring website speed, specifically tailored for SEO experts, digital agencies, and internal web development teams. The free testing feature permits users to analyze up to three web pages on both mobile and desktop devices, utilizing real-user Core Web Vitals data derived from the Chrome UX Report in combination with metrics from Lighthouse labs. Its in-depth reports facilitate direct comparisons between a user’s website and up to two competitors, as well as benchmarks against previously analyzed sites, while also illustrating page weight distributions, timelines for requests, identifying the technologies employed, and offering prioritized recommendations that highlight estimated savings along with the relevant affected files. Those who choose to subscribe to paid plans gain access to extra features including scheduled monitoring, performance budgets, email alerts, historical reporting, and PDF exports, with Agency and Scale plans also providing CSV export capabilities, public dashboards, and a REST API for more advanced functionalities. Additionally, the platform's MCP access empowers compatible AI agents to effortlessly request tests and retrieve results. Clients can also share reports for performance evaluations and to aid in continuous website improvements, significantly enhancing the overall value of the service provided. This comprehensive offering makes PerfDelta an indispensable tool for those committed to optimizing their web performance.

What is GTmetrix?

Wondering how quickly your website loads? Take advantage of GTmetrix to assess its efficiency, discover the factors contributing to any delays, and pinpoint opportunities for enhancement. Our detailed analysis will present you with a clear report outlining the performance metrics of your page. You will benefit from: - Thorough PageSpeed and YSlow scores paired with practical suggestions for improvement. - Detailed information on page load, including the duration, total file size, and number of requests processed. - Various analysis methods tailored to meet your specific requirements. - A comprehensive waterfall chart, video playback of the loading process, and access to your historical reports. Moreover, you can establish alerts to inform you whenever your website's performance falls below your desired standards. Each notification will include a link to a detailed report, helping you diagnose the problem. You can also evaluate your site’s performance on real Android devices or opt for one of over 20 simulated devices, featuring popular models like iPhones, iPads, Samsung Galaxy/Note, Google Nexus/Pixel phones, and many more. With these tools at your disposal, monitoring your website's speed has become more detailed and user-friendly than ever before! Take the first step towards optimizing your website's performance today.

Media

Media

Integrations Supported

ChatGPT
Claude
Cursor
Google PageSpeed Insights
Lighthouse
Model Context Protocol (MCP)
Zapier

Integrations Supported

Data Virtuality
Desktop.com
Stackreaction
Vercel
Workers by Delos

API Availability

Has API

API Availability

Pricing Information

€23/month
A free plan is available. The Solo plan costs €23/month net with monthly billing, or €230/year net with annual billing. Higher plans add scheduled monitoring, alerts, report history, exports, and API access.
Free Version

Pricing Information

$14.95 per month
Up to 3 URLs are free
Free Version

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Not specified

Training Options

Documentation Hub

Training Options

Not specified

Company Facts

Organization Name

PerfDelta

Date Founded

2026

Company Location

Berlin, Germany

Company Website

perfdelta.com

Company Facts

Organization Name

GT.net

Company Location

Canada

Company Website

gtmetrix.com

Categories and Features

Speed Test

PageSpeed Insights evaluates a single URL and provides a singular score. In contrast, PerfDelta examines three pages in each session, displaying results alongside up to two competing sites as well as a reference point based on all domains assessed to date. Additionally, it maintains a record of every measurement taken. The free testing option does not require an account.

Not specified

Website Monitoring

Monitor your Core Web Vitals alongside competitor comparisons and receive timely alerts. Our subscription plans allow for the tracking of 25 to 500 URLs either daily or weekly, with updates every 6 hours for agency accounts. You'll receive daily CrUX field data, the ability to track 3 to 10 rival websites, set performance budgets for individual projects and URLs, and get notified via email if a score decreases by 10 points or more. Additionally, a detailed report will be provided weekly.

Event-Based Notifications
Performance Metrics

Categories and Features

Website Monitoring

Not specified

Website Optimization Tools

Performance Metrics

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