Generated on March 05 2026 23:55 PM
Old data? UPDATE !
The score is 62/100
Title
Influenza (Flu) | CDC
Length : 21
Perfect, your title contains between 10 and 70 characters.
Description
Learn about flu, including symptoms, prevention methods, and treatment options.
Length : 79
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 |
|---|---|
| type | article |
| title | Influenza (Flu) |
| url | https://www.cdc.gov/flu/index.html |
| description | Learn about flu, including symptoms, prevention methods, and treatment options. |
| site_name | Influenza (Flu) |
| author | CDC |
| image | https://www.cdc.gov/flu/images/virus/Flu19_trans_RNPs-small.png?_=39900 |
| image:type | image/png |
| updated_time | 2026-02-25T16:35:50-05:00 |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 4 | 3 | 0 | 0 | 0 |
Images
We found 15 images on this web page.
3 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 : 3%
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
Good. Your links looks friendly!
Underscores in the URLs
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 84 links including 0 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| Skip directly to site content | Internal | Passing Juice |
| Skip directly to search | Internal | Passing Juice |
| Influenza (Flu) | Internal | Passing Juice |
| About | Internal | Passing Juice |
| Signs and Symptoms | Internal | Passing Juice |
| Causes and Spread | Internal | Passing Juice |
| Flu Complications and People at Higher Risk | Internal | Passing Juice |
| Prevention | Internal | Passing Juice |
| Vaccine Basics | Internal | Passing Juice |
| Diagnosis | Internal | Passing Juice |
| Flu Treatment | Internal | Passing Juice |
| View All | Internal | Passing Juice |
| Clinical Guidance | Internal | Passing Juice |
| Clinical Signs and Symptoms of Influenza | Internal | Passing Juice |
| Guidance for Influenza Vaccination | Internal | Passing Juice |
| Vaccine Product Information | Internal | Passing Juice |
| Clinical Testing and Diagnosis | Internal | Passing Juice |
| About Influenza Antiviral Medications | Internal | Passing Juice |
| Infection Control Guidance | Internal | Passing Juice |
| Laboratory Testing | Internal | Passing Juice |
| View All | Internal | Passing Juice |
| Home | Internal | Passing Juice |
| How CDC Classifies Flu Severity each Season in the United States | Internal | Passing Juice |
| Information for Laboratories | Internal | Passing Juice |
| Understanding Influenza Viruses | Internal | Passing Juice |
| WHO Collaborating Center for Surveillance, Epidemiology and Control of Influenza | Internal | Passing Juice |
| Viral Genomic Sequencing Infrastructure | Internal | Passing Juice |
| View All | Internal | Passing Juice |
| Avian Flu | Internal | Passing Juice |
| Swine Flu | Internal | Passing Juice |
| Flu in Animals | Internal | Passing Juice |
| Flu Vaccines Work | Internal | Passing Juice |
| Pandemic Flu | Internal | Passing Juice |
| Flu Burden | Internal | Passing Juice |
| View Menu | Internal | Passing Juice |
| A(H5) Bird Flu: Current Situation | Internal | Passing Juice |
| Weekly U.S. Influenza Surveillance Report | External | Passing Juice |
| Respiratory Illnesses | External | Passing Juice |
| About Estimated Flu Burden | Internal | Passing Juice |
| FluVaxView | Internal | Passing Juice |
| Information for the Flu Season | Internal | Passing Juice |
| Flu Resource Center | Internal | Passing Juice |
| Similarities and Differences between Flu and COVID-19 | Internal | Passing Juice |
| View More | Internal | Passing Juice |
| View All | Internal | Passing Juice |
| Sign up for Email Updates | External | Passing Juice |
| Contact CDC | External | Passing Juice |
| Pressroom | External | Passing Juice |
| Organization | External | Passing Juice |
| Budget & Funding | External | Passing Juice |
| Careers & Jobs | External | Passing Juice |
| Accessibility | External | Passing Juice |
| External Links | External | Passing Juice |
| Privacy | External | Passing Juice |
| Web Policies | External | Passing Juice |
| FOIA | External | Passing Juice |
| OIG | External | Passing Juice |
| No Fear Act | External | Passing Juice |
| Nondiscrimination | External | Passing Juice |
| Vulnerability Disclosure Policy | External | Passing Juice |
| Languages | External | Passing Juice |
| Español | External | Passing Juice |
| Language Assistance | External | Passing Juice |
| Español | External | Passing Juice |
| 繁體中文 | External | Passing Juice |
| Tiếng Việt | External | Passing Juice |
| 한국어 | External | Passing Juice |
| Tagalog | External | Passing Juice |
| Русский | External | Passing Juice |
| العربية | External | Passing Juice |
| Kreyòl Ayisyen | External | Passing Juice |
| Français | External | Passing Juice |
| Polski | External | Passing Juice |
| Português | External | Passing Juice |
| Italiano | External | Passing Juice |
| Deutsch | External | Passing Juice |
| 日本語 | External | Passing Juice |
| فارسی | External | Passing Juice |
| English | External | Passing Juice |
| CDC Archive | External | Passing Juice |
| Public Health Publications | External | Passing Juice |
| About CDC | External | Passing Juice |
| HHS.gov | External | Passing Juice |
| USA.gov | External | Passing Juice |
Keywords Cloud
treatment bird influenza directly flu burden view sept ah5 respiratory
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| flu | 12 | ![]() |
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| influenza | 5 | ![]() |
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| respiratory | 3 | ![]() |
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| burden | 2 | ![]() |
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| ah5 | 2 | ![]() |
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Url
Domain : flu.gov
Length : 7
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
Great. This page take advantage of Dublin Core.
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
![]() |
Excellent, your website doesn't use nested tables. |
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Perfect. No inline css has been found in HTML tags! |
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Great, your website has few CSS files. |
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Too bad, your website has too many JS files (more than 6). |
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Perfect, your website takes advantage of gzip. |
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
XML Sitemap
Great, your website has an XML sitemap.
| https://www.cdc.gov/flu/ |
Robots.txt
https://flu.gov/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.