Free Tools For People Who Build Websites — Since 1999

Free Tool

GeoIP IP Address Lookup

Find out where in the world any IP address is located.

Free Hosted Service

Survey Your Site's Visitors

Use this poll widget to ask your visitors a question.

Free Tool

Instant Website Speed Test

Test the speed of your website with this load time checker.

Free Tool

Broken Link Checker

Scan your website to find broken links to webpages that don't exist.

Free Hosted Service

Get a Website Guestbook

Let visitors read and leave messages in your guestbook.

Free Tool

E-mail Address Link Guard

Stop scrapers from gathering your e-mail address for spam.

Free Hosted Service

Simple Website Hit Counter

Show off how many times your webpage has been seen.

Free Tool

IP Range to CIDR Converter

Calculate the CIDR representation of an IP address range.

Free Tool

CIDR to IP Range Converter

Calculate IP address range from a CIDR.

Free Tool

What is my user agent?

Find out your browser's user agent string and what it means.

Free Tool

Hostname to IP Address Converter

Enter any domain or hostname and find out the corresponding IP.

Free Tool

IP Address to ASN Lookup

Find the Autonomous System number and name associated with an IP.

Free Tool

Server Headers Check

Find out what headers are returned from any website's server.

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Protect Your Online Ads From Fraud

Improvely tracks your ad performance while monitoring for click fraud.

Visitor Boost

Buy Cheap Website Traffic

Affordable popunder advertising. Starting from 1,000 visitors for $1.95.