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About

Improve your users' satisfaction. Gain insights into your website's availability and performance to increase conversion rate and income. Uptime, Performance and SSL monitoring, all combined in one UI. Downtime happens, be the first to know. Track availability of your website, server or API to get instant notifications of downtime. Focus on what matters to your users. Constantly measure the user experience metrics of your Website with Lighthouse tool to improve customers' satisfaction. Do not miss downtime or degradation of response time by receiving notifications to your favorite channels. Increase users' confidence by sharing your uptime statistics. Track what's important, create public status pages with your Website or API availability information. Monitor core web vitals as well as other core lighthouse metrics. Get hints to provide best experience to your customers. Do not miss chance to improve.

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.

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

Anyone who needs an all-in-one website monitoring solution to increase conversion rate and income

Audience

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

Support

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

Support

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

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$5 per month
Billed annually
Free Version Not Supported
Free Trial Supported

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

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

Training

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

Company Information

Apdex
apdex.co

Company Information

PerfDelta
Founded: 2026
Berlin, Germany
perfdelta.com

Alternatives

Alternatives

Plomer

Plomer

Jiti
C9 Pharos

C9 Pharos

C9Lab

Categories

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.

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 Not Supported
Claude Not Supported
Cursor Not Supported
Google PageSpeed Insights Not Supported
Lighthouse Not Supported
Model Context Protocol (MCP) Not Supported
Slack Supported
Telegram Supported
Zapier Not Supported

Integrations

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