Quick and Easy Tools

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Quick Difference


An Online Tool to do a ‘quick and dirty’ diff of two text or code fragments


Jack of All Trades


This is an incredible tool that can quickly reformat any text by adding, replacing, deleting, or sorting based on specified criteria.


htaccess Functionality Tester


To test your htaccess rewrite rules, simply fill in the url that you’re applying the rules to, place the contents of your htaccess on the larger input area and press “Test” button.


htaccess Syntax Tester


Sick of one silly typo in a .htaccess file causing your entire site to be broken? This simple checker will validate that your .htaccess lines are free of any syntax errors.


PHP Code Syntax Tester


 This free service performs a line-by-line analysis for common mistakes and errors in your PHP syntax and will not execute or save your code.

PHP Functionality Tester


 Same as above?

REGEX Tester


Online regex tester and debugger: PHP, PCRE, Python, Golang & JavaScript 

SSL Certificate Tester


This SSL Checker will help you diagnose problems with your SSL certificate installation. You can verify the SSL certificate on your web server to make sure it is correctly installed, valid, trusted and doesn’t give any errors to any of your users. To use the SSL Checker, simply enter your server’s hostname (must be public) in the box below and click the Check SSL button. If you need an SSL certificate, check out the SSL Wizard

Redirect Checker



Check your URL redirect for accuracy. Do you use search engine friendly redirections like to many redirects or do you loose link juice for seo by redirects using HTTP Statuscode 301 vs. 302. Check now!

Please insert URL to check redirection.

Redirect/HTTP Status Code Tester


Check status code, response headers, redirect location and redirect chain of a HTTP connection.


IP Address Checker


Lets you find an hide your IP address.

Full DNS Record Test


IntoDNS checks the health and configuration and provides DNS report and mail servers report.

And provides suggestions to fix and improve them, with references to protocols’ official documentation.


DNS Propagation Check


whatsmydns.net lets you instantly perform a DNS lookup to check a domain names current IP address and DNS record information against multiple name servers located in different parts of the world.

This allows you to check the current state of DNS propagation after having made changes to your domains records.

MX Records


This test will connect to a mail server via SMTP, perform a simple Open Relay Test and verify the server has a reverse DNS (PTR) record.  It will also measure the response times for the mail server.  If you don’t know your mail server’s address, start with a MX Lookup.

About YellowWebMonkey

YellowWebMonkey Web design offers reliable website design, SEO and digital marketing services for Joomla, WordPress and Shopify sites. We strive to be a one-stop shop for all your web needs.

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