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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 PageWatch?

Keep a close watch on updates throughout your website to proactively identify and fix issues before your audience faces them. Spotting visual inconsistencies on each page is essential for ensuring a seamless user experience, given that research shows that almost 85% of users may abandon a site if they come across errors. It's crucial to comprehend how recent changes affect your site and to uncover any unexpected outcomes early to prevent potential complications. PageWatch employs Lighthouse technology to analyze your website for performance issues that could hinder conversion rates. This user-friendly front-end testing tool allows you to assess any website for a range of problems, such as performance deficiencies, layout inconsistencies, typographical errors, broken links, and more. You can easily integrate PageWatch into your continuous integration process, enabling you to assess your site with each pull request or deployment, thus swiftly addressing any emerging issues. Moreover, our Netlify build plugin supports automatic PageWatch audits from pull request previews or production builds, guaranteeing that quality is consistently upheld. Utilizing PageWatch not only boosts the reliability of your website but also greatly enhances user satisfaction. Ultimately, a well-monitored site fosters greater trust and encourages users to engage more deeply with your content.

Media

Media

Integrations Supported

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

Integrations Supported

GitHub
Netlify

API Availability

Has API

API Availability

Has API

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

$29 per month
Free Trial Offered?

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

PerfDelta

Date Founded

2026

Company Location

Berlin, Germany

Company Website

perfdelta.com

Company Facts

Organization Name

PageWatch

Company Website

pagewatch.dev/

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

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