free website development and optimization tools

Security, SEO and Site Optimization Tools for Web Developers

SEO Tools & Insights from Merkle, a performance marketing agency –
One of the main aspects of managing technical SEO is all of the testing that has to happen, and there is a great resource at, and it’s provided by Merkle. Here, they’ve aggregated a variety of the most popular tests that you’ll be using to manage your technical SEO, things like testing your robots.txt file, managing your fetch and render, looking at schema, evaluating how your search results look, and so on. Each of these tools is relatively easy to use.  to manage your technical SEO, things like testing your robots.txt file, managing your fetch and render, looking at schema, evaluating how your search results look, and so on Simply select the tool, and follow the prompts on the screen. You’ll likely see me use these tools among others as we dig deeper into evaluating WordPress SEO, but I encourage you to go ahead and start using these tools on your own and identifying what type of interesting insights you might uncover.  
Screaming Frog SEO Spider Website Crawler
The Screaming Frog SEO Spider is a fast and advanced SEO site audit tool. It can be used to crawl both small and very large websites, where manually checking Improve your onsite SEO by crawling your own site The Screaming Frog SEO Spider is a website crawler that helps you improve onsite SEO, by extracting data & auditing for common SEO issues. Download & crawl 500 URLs for free, or buy a licence to remove the limit & access advanced features.  
Security Headers Scanner – scan your site now – Scan Your Site Now.
Why HTTP Security Headers are necessary? As you know, nowadays too many data breaches are happening, many websites are hacked due to misconfiguration or lack of protection.
HTTP Security Headers testing tool
HTTP Security Headers testing tool
HTTP Security Headers testing tool These security headers will protect your website from some common attacks like XSS, code injection, clickjacking, etc. You need to have A or A+ and we can help you to improve your Security headers score 911cybersecurity website security headers scan
SSL Check scan your website for non-secure content such as images, scripts and css-files
SSL Check - scan your website for non-secure content This free tool will crawl an HTTPS-website (entire website, recursively, following internal links) and search for non-secure images, scripts and css-files that will trigger a warning message in browsers. The number of pages crawled is limited to 400 per website. The results are cached for 10 minutes.
Analyze and optimize your website with Google PageSpeed tools.
Analyze and optimize your website with PageSpeed tools PageSpeed Insights analyzes the content of a web page, then generates suggestions to make that page faster. PageSpeed Insights (PSI) reports on the performance of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved. PSI provides both lab and field data about a page. Lab data is useful for debugging performance issues, as it is collected in a controlled environment. However, it may not capture real-world bottlenecks. Field data is useful for capturing true, real-world user experience – but has a more limited set of metrics. At the top of the report, PSI provides a score which summarizes the page’s performance. This score is determined by running Lighthouse to collect and analyze lab data about the page. A score of 90 or above is considered good. 50 to 90 is a score that needs improvement, and below 50 is considered poor. – Reverse Image Search Find where images appear online. Fast, scalable image recognition and tracking tools built to suit your needs
TinEye - Reverse Image Search, Find where images appear online Using TinEye, you can search by image or perform what we call a reverse image search. You can do that by uploading an image or searching by URL. You can also simply drag and drop your images to start your search. TinEye constantly crawls the web and adds images to its index. Today, the TinEye index is over 47.0 billion images. TinEye is an image search and recognition company. We are experts in computer vision, pattern recognition, neural networks and machine learning.
Google Search Console is a web service by Google which allows webmasters to check indexing status and optimize visibility of their websites. Until 20 May 2015, the service was called Google Webmaster Tools. In January 2018, Google introduced a new version of the search console, with changes to the user interface.
Improve your performance on Google Search Google Search Console enables you to check out any crawling errors that have occurred on your website so you can correct them right away. It can also point out when your site is affected by malware, what keyword phrases people are using to find your site, the backlinks you’ve received, and more. The many features this service offers makes it a near necessity if you’re concerned about your Search Engine Results Page (SERP) rankings. There’s a clear focus on Google results here, but don’t worry. If you can rank well on Google, the chances are high that you’ll also do OK in other search engines. As far as actually using the service goes, Google Search Console is very simple to understand. It’s also easy to add your website and get started, so there are no reasons to avoid it. Key Features:
  • Monitor how Google perceives your website.
  • Keep track of what keywords visitors are using to reach you.
  • Stay on top of any crawl, meta tag, or sitemap errors.
  • Update your robots.txt file.
  • Monitor your site’s backlinks.
  • Get alerts if your site is infected with malware.
        Web Developers Resources 17 SEO Tools to tools to Optimize Your Website for Success in 2021:
17 SEO Tools to Optimize Your Website for Success in 2021
Open Graph Check: The Batch Invalidator will let you refresh this information for multiple URLs at the same time. Open Graph markup lets you take control over how your website content appears to others. Learn More Check website safety:

Website Security Tools

Unmask Parasites – reveal illicit content hidden inside web pages.

Security Search – search major website security oriented resources

Custom Search
e.g. “wordpress security tips” or “spam filtering”

Search Badware Website Clearinghouse – is a partnership between top academic institutions, technology industry leaders, and volunteers committed to protecting Internet and computer users from threats to their privacy and security caused by bad software.


Report malicious software – report a site that you suspect contains malicious software.


Install the Readable Safe Browsing add-on for Firefox. It highlights most importand information on Google’s Safe Browsing diagnostic pages so that you can easily read them.


SecBrowsing: Browser Plugin Check


Pen testing tools: