WEBPERF

Once a day, check your most important Webperf KPIs and receive an alert if your alert threshold has been exceeded.

An Automated Process

Oseox WEBPERF connects to the sites & URLs you have provided in order to retrieve the values of the KPIs of your choice (configurable). Everything is stored to maintain a history and offer you beautiful data visualization.

our KPI 

• TTFB (Time To First Byte)
• LCP (Largest Contentful Paint)
• Speed Index
• FID (First Input Delay)
• CLS (Cumulative Layout Shift)
• HTML Page Code Weight

Other KPI may be added later.

WEBPERF Alerts

Like other Oseox tools such as ALERTING, Oseox WEBPERF allows you to configure alerts.

You just have to define the thresholds not to be exceeded.

For most KPIs, it is possible to define the alert threshold. As soon as this threshold is reached, Oseox WEBPERF sends you an email to notify you.

WEBPERF Reports

You can specify if you wish to receive a report and its frequency. Two choices are offered: Weekly or monthly.

It's a CSV report. Each monitored URL is listed with the values of all KPI for that URL.

Additionally, two calculated values are included: the median and the average.

Learn More About Web Performance KPI

TTFB

TTFB stands for Time To First Byte: Response time of a server in milliseconds

1. Too high: above 600 ms
2. Good: below 200 ms
3. Excellent: starting from 100 ms

Note that we use 2 different crawlers and thus offer 2 scores to follow.

LCP

LCP stands for Largest Contentful Paint: Full display time of the largest image (or video or text block) visible

1. Good: < 2.5 seconds
2. Needs improvement: Between 2.5 and 4 seconds
3. Bad: > 4 seconds

Speed INDEX

Speed Index is not a simple value like TTFB or LCP.

It is a global score calculated to reflect the user's experience during loading.

Ideally, a Speed INDEX should be provided for each major "device" type (viewport). The lower the Speed INDEX, the better.

Good: < 1000 ms.

FID

FID stands for First Input Delay: The time elapsed before the user can interact with the page for the first time.

1. Too high: Above 300 ms
2. Good: Between 100 and 300 ms
3. Excellent: Below 100 ms

CLS

CLS stands for Cumulative Layout Shift. Have you ever noticed pages loading gradually with moving elements?

This KPI tries to evaluate this phenomenon, which can sometimes be unpleasant for the user. When sudden movements occur, the score increases.

1. Too high: Above 0.25
2. Normal: Between 0.1 and 0.25
3. Good: Below 0.1

Page Weight

This simply refers to the weight of the HTML code. It does not include the weight of images.

1. Too high: Above 2.5 MB, or 2,500,000 bytes (it’s actually a bit more)