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About

PerfDelta is a web-based website speed testing and monitoring service for SEO specialists, agencies, and in-house web teams. Its free test scans up to three pages on mobile and desktop, combining real-user Core Web Vitals from the Chrome UX Report with Lighthouse lab measurements. Reports compare a site with up to two competitor domains and a benchmark of previously tested sites, show page-weight breakdowns and request timelines, identify site technologies, and estimate savings in prioritized recommendations naming affected files. Paid plans add scheduled monitoring, performance budgets, email alerts, report history, and PDF exports; Agency and Scale plans also provide CSV export, public dashboards, and a REST API. MCP access lets compatible AI agents request tests and retrieve results. Reports can be shared with clients for performance audits and ongoing site work.

About

Increase your team’s efficiency by eliminating dependencies on multiple tools. Uncover all critical issues with just a click. Manage it all from a simple, unified platform, cutting down hundreds of hours of repetitive work. High-performing websites make clients happy, boost engagement, and build trust in your agency’s expertise. Strong accessibility ensures inclusivity, expands audience reach, and enhances client satisfaction for web agencies. High-quality web development builds trust, reduces issues, and elevates client confidence in agency services. Effective SEO drives visibility increases traffic, and delivers measurable results for web agency clients. Optimize your website management process with our all-in-one audit and monitoring tool for improved efficiency. WebYes is a free audit and monitoring tool that scans your website and identifies issues. It provides a detailed report highlighting key areas of improvement after the scan.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

SEO specialists, agencies, and in-house web teams.

Audience

Companies seeking a free audit and monitoring tool to scan their website and identify issues

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

€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 Supported
Free Trial Not Supported

Pricing

$59 per month
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

PerfDelta
Founded: 2026
Berlin, Germany
perfdelta.com

Company Information

WebYes
Founded: 2024
United States
www.webyes.com

Alternatives

Alternatives

Sitelemetry

Sitelemetry

Egenil Teleferik Mühendislik Teknik İşletme Danışmanlık Ltd. Şti.
Hexometer

Hexometer

Hexact, Inc

Categories

Speed Test Supported

PageSpeed Insights tests one URL and shows one score. PerfDelta tests three pages per run, puts the results next to up to two competitors and a benchmark of every domain tested so far, and keeps the history of every measurement. The free test needs no account.

Website Monitoring Supported

Core Web Vitals monitoring with competitor benchmarks and alerts. Paid plans monitor 25 to 500 URLs daily or weekly, every 6 hours from Agency, with daily CrUX field data, 3 to 10 tracked competitors, performance budgets per project and URL, email alerts when a score drops by 10 points or more and a weekly report.

Categories

Website Monitoring Features

Availability Testing Not Supported
Event Logs Not Supported
Event-Based Notifications Supported
FTP Monitoring Not Supported
Mail Server Monitoring Not Supported
Maintenance Scheduling Not Supported
Performance Metrics Supported
Real Time Monitoring Not Supported
Transaction Monitoring Not Supported
Uptime Reporting Not Supported

Integrations

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

Integrations

ChatGPT Not Supported
Claude Not Supported
Cursor Not Supported
Google PageSpeed Insights Not Supported
Lighthouse Not Supported
Model Context Protocol (MCP) Not Supported
Zapier Not Supported
Claim PerfDelta and update features and information
Claim PerfDelta and update features and information
Claim WebYes and update features and information
Claim WebYes and update features and information