Online test to help speeding up heavy web pages

Free and open source!

Choose the simulated device:
Phone Tablet Desktop Desktop
[ Advanced settings  ✚ ]
Cookie
Cookie

Adds cookies, separated by a pipe character.

Example: "bar1=foo1;domain=.domain1.com|bar2=foo2;domain=www.domain2.com"
Authent
Basic HTTP authentication

Enter your credentials here if you need to bypass a basic authentication.

PS: if your authentication is not basic, you might be able to copy the session cookie from your browser, paste it in the "Cookie" setting and launch a run before your cookie expires.
username
password
HTTP proxy
HTTP proxy

Insert here your proxy settings with the format "host:port".

Example: "192.168.10.0:3333"
Block domains
Block some domains

One line per domain or subdomain.

Example:
google-analytics.com
ads.yahoo.com
ajax.googleapis.com


An empty allow list will block all domains except the main domain.
block list allow list

Page speed audit

Checks if performance good practices are respected

Front-end analyzis

Detects problems on HTML, CSS, JS, images, fonts and more

In-depth details

Provides precise information to fix the detected performance issues

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