SEO BEST TOOLS Checker 2021

Most Web creator always worry about thier SEO  pages and sites, today i'm gonna give you some steps to check your SEO Web pages check them out.  

SEO BEST TOOLS 


Checker Services ✅

List of links to the various checkers out there on the web for sites, domains, security etc.

Table of Contents 📖

Accessibility ♿️

URLDescription💳
https://achecker.ca/checker/index.phpChecks single HTML pages for conformance
 with accessibility standards to ensure the content
can be accessed by everyone.
Free
http://www.dasilva.org.br/Test sites for accessibility issues
(W3C/WAI - WCAG1 and WCAG2 - and E-mag).
Free
https://tenon.io/Test sites for accessibility issues and
offer solutions for problems found.
Free and paid plans
https://www.toptal.com/designers/colorfilterChecks pages for color accessibility.Free
http://wave.webaim.org/Gives a detailed report about markup
and accessibility concerns including
 ARIA roles. Provides solutions for problems found.
Free

Browser Testing 🌎

URLDescription💳
http://browsershots.orgTest websites on many browser,
platforms and devices.
Free
https://www.browserstack.com/Test your website for cross browser
compatibility
 on real browsers. Instant access to
 multiple desktop and mobile browsers.
Paid
https://saucelabs.comTest apps and websites in many browsers.
Can be integrated in CI workflows.
Free trial, free for open source
 projects, paid
https://testingbot.comTest apps and websites in many browsers.
Can be integrated in CI workflows.
Free trial, free for open source
 projects, paid

Cron Jobs ⚡

URLDescription💳
https://cronhub.io/Painless cron job scheduler & monitoring service.Paid
https://cronless.com/Online Cron Job Replacement and Monitoring Service.Free
https://deadmanssnitch.com/Get More Out of Your Cron Jobs.Paid
https://healthchecks.io/Simple and Effective Cron Job Monitoring.Free

DNS 🌐

URLDescription💳
http://bgp.he.netCheck IPs, networks, whois, ASNs,
prefixes and more.
Free
https://www.digwebinterface.com/Extensive web interface to dig
for doing online DNS / nameserver query.
Free and donations welcome
http://dnscheck.pingdom.com/Enter a domain name to check
if its DNS servers are configured correctly.
Free
https://dnschecker.orgCheck the DNS propagation of domains.Free
https://dnsdumpster.com/Domain research tool that can
discover hosts related to a domain.
Free
https://dnsspy.io/Monitor, validate and verify your
DNS configurations.
Free and paid plans
http://www.dnsstuff.com/toolsMultiple DNS tools.Free
https://dnswatch.info/DNS Lookups & Performance Monitoring.Free
https://www.domainiq.com/toolsDNS, IP, MX tools.Free and paid plans
https://whois.domaintools.com/Reverse whois & IP lookup.Free and paid plans
https://ip6.nlTest if the server supports IPv6.Free
http://ipv6-test.com/validate.phpTest if the server supports IPv6.Free
http://www.ipvoid.comMultiple IP address tools.Free
https://mxtoolbox.com/SuperTool.aspxBig collection of useful network tools.Free
https://www.tcpiputils.com/Reverse/history tools for DNS, IP, MX.Free and paid plans
https://toolbox.googleapps.com/apps/digEasy to use DNS dig tool.Free
https://toolbox.googleapps.com/apps/checkmxCheck the MX records of a domain.Free
https://tools.keycdn.comCheck for http/2 support and
find network related issues.
Free
https://www.ultratools.comBig collection of useful network tools.Free
https://www.unlocktheinbox.com/dnstools/mx/Checks DNS, WHOIS, Blacklists, and moreFree, Paid Plans
http://www.viewdns.info/View DNS, IP, MX information.Free and paid plans
https://www.whatsmydns.net/Global DNS propagation checker.Free

Load Testing 🔥

URLDescription💳
https://loader.io/Loader.io is a FREE load testing service that allows
 you to stress test your web-apps & APIs
with thousands of concurrent connections.
Free and paid plans
https://loadimpact.com/Load test your website, app or API instantly
with up to 1.2 million concurrent users.
Get unlimited tests with a free trial.
Free and paid plans

Mail Configuration ✉️

URLDescription💳
https://email-checker.netCheck emails addresses and lists
of email addresses for existence.
Free, paid premium plans
https://hunter.io/email-verifierTest the existence of up to
100 email addresses.
Free, paid plans
https://www.mail-tester.com/Test the Spammyness of your EmailsFree
https://mxtoolbox.com/blacklists.aspxThe blacklist check will test
a mail server
 IP address against over
100 DNS based email
Free, paid plans
https://www.unlocktheinbox.com/mail-tester/Email Authentication and
Configuration Tester
Free, Paid Plans
http://www.verifyemailaddress.orgAnother email address checker.Free, paid bulk plan
https://tools.verifyemailaddress.ioTest if an email address exists.
Also provides an API for developers.
Free, paid API

Mail Testing ✉️

URLDescription💳
https://www.unlocktheinbox.com/services/inboxtester/Email Inbox Tester -
 Check over 20+ destinations
Paid Plans
https://www.campaignmonitor.comPreview emails in over 25
 different email clients with
the inbox preview feature.
Free trial, paid plans
https://www.emailonacid.comTest emails in over 70 email clients,
apps and on different platforms.
Free trial, paid plans
http://www.emailreach.comCheck how the emails render
 in different clients and on different
 platforms with the EmailView and
MobileView features.
Free trial, paid plans
https://litmus.com/email-testingTest the rendering of emails in over
 70 email clients and devices.
Free trial, paid plans
http://previewmyemail.comAnother provider to test the rendering
on many email clients and devices.
Paid plans
https://putsmail.comSend and debug emails in three parts
 (html, plain text, Apple watch).
Free

Mobile Friendliness 📱

URLDescription💳
https://developers.google.com/web/tools/lighthouse/Useful for testing PWA's does mobile
friendliness etc but not exclusively mobile
Free
https://search.google.com/search-console/mobile-friendlyTest how easily a visitor can use your page
 on a mobile device. Just enter a page URL
 to see how your page scores.
Free

Security 🔒

URLDescription💳
https://www.checkbot.io/Browser extension that checks multiple pages at once for web
security best practices. Finds HTTPS mixed content issues,
insecure password forms and more.
Free and paid plans
https://crt.shGet an overview and information of assigned TLS certificates.Free
https://csp-evaluator.withgoogle.comValidate and check the CSP for weaknesses and security issues.Free
https://hackertarget.comThis service provides multiple tools to check
websites for vulnerabilities.
Free and paid plans
https://www.hardenize.com/Harden your server's securityFree
https://hstspreload.org/Check if a domain is on the HSTS preload list
 in browsers and submit them to the list.
Free
https://www.htbridge.com/ssl/Test SSL/TLS implementation of any service
 on any port for compliance with PCI DSS requirements,
HIPAA guidance and NIST guidelines.
Free
https://httpschecker.net/Track down HTTPS mixed content issues.Free and paid plans
http://www.isithacked.comCheck if there are any signs that a website is hacked.Free
https://www.magereport.comMageReport checks if a Magento instance is
outdated and if all security patches are installed.
Free
https://observatory.mozilla.org/Observatory by Mozilla is a project designed
to help developers, system administrators,
and security professionals configure
their sites safely and securely.
Free
https://report-uri.io/home/toolsMultiple useful tools for CSP, HPKP, SRI,
headers and certificates.
Free
https://securityheaders.io/Scott Helme built securityheaders.
io after deploying security headers like CSP
and HSTS to his own site. He wanted
a quick and easy way to check if other sites
 were using these headers and he figured
he'd turn it into a useful tool for everyone to use!
Free
https://security.sensiolabs.org/Check your PHP project for known security issuesFree
https://sshcheck.comCheck the SSH configuration of servers.Free
https://ssldecoder.orgCheck the TLS configuration of a server.Free
https://www.ssllabs.com/ssltest/This free online service performs a deep
analysis of the configuration of any SSL
 web server on the public Internet
Free
https://tls.imirhil.fr/Test the strength of the available
ciphers which can be used with HTTPS or SSH.
Free

SEO 📈

URLDescription💳
https://www.checkbot.io/Browser extension that checks multiple pages
at once for SEO best practices.
Finds duplicate content,
broken links, unfriendly
 URL names and more.
Free and paid plans
https://insites.com/Test your websites for everything. Check spelling,
broken links, SEO, accessibility and more
Paid
http://nibbler.silktide.com/Nibbler is a free tool for testing websites.
 Enter the address of any website and
Nibbler will give you a report scoring
the website out of 10 for key areas, including accessibility,
 SEO, social media and technology.
Free and paid plans
https://richpreview.com/Preview your website for chat apps
and social networks
Free
https://search.google.com/structured-data/testing-tool/u/0/Evaluate your structed data (rich snippets)
markup for errors or warnings
Free
https://seomator.comSEO Audit Tool and website crawler for
SEO performance improving
with How-to-Fix tips.
Paid

Technology Used 🖥

URLDescription💳
https://builtwith.com/Find out what websites are Built WithFree and paid plans

Uptime Monitoring 📉

URLDescription💳
https://www.freshworks.com/website-monitoring/50 monitors, 1 min intervals,
 5 public status pages free
Free and paid plans
https://tryhexadecimal.comNo-nonsense website monitoring
 and status page service
Paid
https://ohdear.app/2 sites, 5 euro, uptime,
 certificate monitoring,
mixed content scanning and more
Paid only
https://www.statuscake.com/10 monitors, 5 min intervals, branded
 public reporting free
Free and paid plans
https://uptimerobot.com/50 monitors, 5 min intervals,
2 months of logs free
Free and paid plans

URL Analysis 🌐

URLDescription💳
http://urlquery.netCheck URLs for malicious requests.Free
https://urlscan.ioFind out what happens when a URL is accessed.Free

Validation 👌

URLDescription💳
https://validator.w3.org/unicorn/Checks for proper HTML and CSS
 markup as well as broken links.
Free
https://www.zerobounce.com/Checks to see if the email address is valid.Free, Paid plans

Website Performance 🚀

URLDescription💳
https://checkgzipcompression.com/Check if GZIP compression on your
web server is enabled
Free
https://www.checkbot.io/Browser extension that checks multiple
pages at once for performance
 best practices.
Finds unminified resources, redirect chains,
 render-blocking JavaScript and more.
Free and paid plans
https://developers.google.com/speed/pagespeed/insights/PageSpeed Insights analyzes
the content of a web page,
then generates suggestions
 to make that page faster.
Free
https://gtmetrix.com/GTmetrix is a free tool
 that analyzes your
 page's speed performance.
Using PageSpeed and YSlow,
GTmetrix generates scores
for your pages and offers actionable
 recommendations on how to fix them.
Free and paid plans
http://www.monitis.com/pageloadSimple page load test from 3 continents.Free
https://pageweight.imgix.com/See how images affect your page speedFree
https://testmysite.withgoogle.comChecks websites for performance
issues and provides reports.
Free
https://toolbox.googleapps.com/apps/har_analyzerAnalyse the performance
 with a HAR file.
Free
https://tools.pingdom.com/Enter a URL to test the load time
of that page, analyze it and
find bottlenecks.
Free and paid plans
https://www.uptrends.com/tools/website-speed-testCheck the performance from 30+
free and 160+ paid checkpoints.
Free, paid plans
https://www.webpagetest.orgWebsite performance test tools
with many options.
Free
http://yellowlab.tools/Online test to help speeding up
 heavy web pages
Free

Contributing ✍️

This started as a small personal project.

Although this project is small, openness and inclusivity are taken seriously. To that end a code of conduct (listed in the contributing guide) has been adopted.

Contributor Guide

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