Discover all Calibre features


Platform

Pull Request ReviewsComing Soon

Compare and see the performance impact of your team’s work without leaving GitHub.

Test Profiles

Change conditions that Calibre tests your sites in—connection speed, devices, test location and more.

Performance Budgets

Track your progress and introduce accountability by setting budgets against metrics.

Single Page Tests

Quickly create and share one-off test results with no log-in required.

Insights Email Report

Receive comprehensive performance overviews directly to your inbox each week.

Google Lighthouse built-in

Leverage the power of a custom-built performance suite, including Google Lighthouse.

Global testing infrastructure

Test your sites across 15 global locations to discover where your customers’ experience suffers most.

Unlimited data retention

We offer a lifetime snapshot data retention for all account tiers.

Advanced test scheduling

Always be in control of how often your sites should be tested.

Test variability prevention

Be confident in your metrics with an AI-powered test verification engine that quickly re-tests results when an anomaly is detected.

Unlimited sites and pages

Track unlimited sites and pages at no extra cost.

Metric charts

See historical performance metric data over up to 6 months.

Ad and Third Party Blocking

Block ads and third party resources to establish a performance baseline.

JavaScript timings

Find out the parse, compile and execution cost of internal and vendor scripts.

Testing authenticated pages

Access pages requiring authentication through cookies, custom headers or form log-ins.

Site render timeline

Easily spot when and under which conditions rendering problems occur.

Fixed IP addresses

Use fixed IP addresses to ensure requests are securely coming from Calibre.

Request log

Dig into downloaded assets and learn how to optimise their delivery.

HAR files

Download HAR files to understand connectivity and transfer issues.

Automation

Command line interface

Automate your performance system with powerful, modern CLI tooling.

Node.js API

Use our npm package to leverage Calibre directly in Node.

Webhooks

Add webhooks to retrieve snapshot data securely through HTTP.

Deploy tracking

Find out which release affected performance, accessibility or SEO with deployment markers.

Notifications

Email alerts

Be notified about performance wins and regressions as they occur.

Slack integration

Receive instant alerts about new snapshots or performance budgets being met or blown.

Integrations

Geckoboard

Send metrics from Calibre to Geckoboard to visualise your performance KPIs in your office.

Security and privacy

Full encryption

We encrypt all of your data at rest in both our databases and file storage.

GDPR compliance

We comply with the General Data Protection Regulation (GDPR) to ensure you always have control over your data.

SSO (SAML)Enterprise

Add an extra layer of sign in security and faster onboarding for your organisation.

Try the most advanced performance suite