Generated on December 22 2025 01:39 AM
Old data? UPDATE !
The score is 48/100
Title
Cryptography I | Coursera
Length : 25
Perfect, your title contains between 10 and 70 characters.
Description
Offered by Stanford University. Cryptography is an indispensable tool for protecting information in computer systems. In this course you ... Enroll for free.
Length : 157
Great, your meta description contains between 70 and 160 characters.
Keywords
Very bad. We haven't found meta keywords on your page. Use this free online meta tags generator to create keywords.
Og Meta Properties
Good, your page take advantage of Og Properties.
| Property | Content |
|---|---|
| site_name | Coursera |
| url | https://www.coursera.org/learn/crypto |
| locale | en_US |
| type | website |
| title | Cryptography I |
| description | Offered by Stanford University. Cryptography is an indispensable tool for protecting information in computer systems. In this course you ... Enroll for free. |
| image | https://s3.amazonaws.com/coursera_assets/meta_images/generated/XDP/XDP~COURSE!~crypto/XDP~COURSE!~crypto.jpeg |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 2 | 12 | 17 | 7 | 15 | 0 |
Images
We found 26 images on this web page.
11 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.
Text/HTML Ratio
Ratio : 0%
This page's ratio of text to HTML code is below 15 percent, this means that your website probably needs more text content.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Great, there are no Iframes detected on this page.
URL Rewrite
Bad. Your links have query string.
Underscores in the URLs
We have detected underscores in your URLs. You should rather use hyphens to optimize your SEO.
In-page links
We found a total of 95 links including 1 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| About | Internal | Passing Juice |
| Modules | Internal | Passing Juice |
| Recommendations | Internal | Passing Juice |
| Testimonials | Internal | Passing Juice |
| Reviews | Internal | Passing Juice |
| Browse | Internal | Passing Juice |
| Computer Science | Internal | Passing Juice |
| Computer Security and Networks | Internal | Passing Juice |
| Save now | External | Passing Juice |
| Algorithms | External | Passing Juice |
| Cybersecurity | External | Passing Juice |
| Data Encryption Standard | External | Passing Juice |
| Secure Coding | External | Passing Juice |
| Key Management | External | Passing Juice |
| Public Key Cryptography Standards (PKCS) | External | Passing Juice |
| Data Integrity | External | Passing Juice |
| Computational Thinking | External | Passing Juice |
| Authentications | External | Passing Juice |
| Encryption | External | Passing Juice |
| Advanced Encryption Standard (AES) | External | Passing Juice |
| Cryptography | External | Passing Juice |
| Learn more about Coursera for Business | Internal | Passing Juice |
| Visit the learner help center | External | Passing Juice |
| Artificial Intelligence (AI) | External | Passing Juice |
| Data Analytics | External | Passing Juice |
| Digital Marketing | External | Passing Juice |
| English Speaking | External | Passing Juice |
| Generative AI (GenAI) | External | Passing Juice |
| Microsoft Excel | External | Passing Juice |
| Microsoft Power BI | External | Passing Juice |
| Project Management | External | Passing Juice |
| Python | External | Passing Juice |
| Google Cybersecurity Certificate | External | Passing Juice |
| Google Data Analytics Certificate | External | Passing Juice |
| Google IT Support Certificate | External | Passing Juice |
| Google Project Management Certificate | External | Passing Juice |
| Google UX Design Certificate | External | Passing Juice |
| IBM Data Analyst Certificate | External | Passing Juice |
| IBM Data Science Certificate | External | Passing Juice |
| Machine Learning Certificate | External | Passing Juice |
| Microsoft Power BI Data Analyst Certificate | External | Passing Juice |
| UI / UX Design Certificate | External | Passing Juice |
| Business | External | Passing Juice |
| Computer Science | External | Passing Juice |
| Data Science | External | Passing Juice |
| Education & Teaching | External | Passing Juice |
| Engineering | External | Passing Juice |
| Finance | External | Passing Juice |
| Healthcare | External | Passing Juice |
| Human Resources (HR) | External | Passing Juice |
| Information Technology (IT) | External | Passing Juice |
| Marketing | External | Passing Juice |
| Career Aptitude Test | External | Passing Juice |
| Examples of Strengths and Weaknesses for Job Interviews | External | Passing Juice |
| High-Income Skills to Learn | External | Passing Juice |
| How Does Cryptocurrency Work? | External | Passing Juice |
| How to Highlight Duplicates in Google Sheets | External | Passing Juice |
| How to Learn Artificial Intelligence | External | Passing Juice |
| Popular Cybersecurity Certifications | External | Passing Juice |
| Preparing for the PMP Certification | External | Passing Juice |
| Signs You Will Get the Job After an Interview | External | Passing Juice |
| What Is Artificial Intelligence? | External | Passing Juice |
| About | Internal | Passing Juice |
| What We Offer | Internal | Passing Juice |
| Leadership | Internal | Passing Juice |
| Careers | External | Passing Juice |
| Coursera Plus | Internal | Passing Juice |
| Professional Certificates | Internal | Passing Juice |
| MasterTrack® Certificates | Internal | Passing Juice |
| Degrees | Internal | Passing Juice |
| For Enterprise | Internal | Passing Juice |
| For Government | Internal | Passing Juice |
| For Campus | Internal | Passing Juice |
| Become a Partner | External | Passing Juice |
| Social Impact | Internal | Passing Juice |
| Free Courses | External | Passing Juice |
| Share your Coursera learning story | External | Passing Juice |
| Learners | External | Passing Juice |
| Partners | External | Passing Juice |
| Beta Testers | External | Passing Juice |
| Blog | External | Passing Juice |
| The Coursera Podcast | External | Passing Juice |
| Tech Blog | External | Passing Juice |
| Press | Internal | Passing Juice |
| Investors | External | Passing Juice |
| Terms | Internal | Passing Juice |
| Privacy | Internal | Passing Juice |
| Help | External | Passing Juice |
| Accessibility | External | Passing Juice |
| Contact | Internal | Passing Juice |
| Articles | External | Passing Juice |
| Directory | Internal | Passing Juice |
| Affiliates | Internal | Passing Juice |
| Modern Slavery Statement | External | Passing Juice |
| Cookies Preference Center | Internal | Passing Juice |
Keywords Cloud
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|
Url
Domain : crypto-class.com
Length : 16
Favicon
Great, your website has a favicon.
Printability
Great. We have found a Print-Friendly CSS.
Language
Good. Your declared language is en.
Dublin Core
This page does not take advantage of Dublin Core.
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Warning! At least one email address has been found in the plain text. Use free antispam protector to hide email from spammers.
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
![]() |
Excellent, your website doesn't use nested tables. |
![]() |
Too bad, your website is using inline styles. |
![]() |
Great, your website has few CSS files. |
![]() |
Perfect, your website has few JavaScript files. |
![]() |
Perfect, your website takes advantage of gzip. |
Mobile Optimization
![]() |
Apple Icon |
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Meta Viewport Tag |
![]() |
Flash content |
XML Sitemap
Great, your website has an XML sitemap.
| https://www.coursera.org/learn/crypto |
Robots.txt
https://crypto-class.com/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
We didn't detect an analytics tool installed on this website.
Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.
Free SEO Testing Tool is a free SEO tool which provides you content analysis of the website.