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tandem.edu.co

https://tandem.edu.co· First analyzed 13 May 2026· Updated 13 May 2026
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tandem.edu.co
Desktop screenshot of tandem.edu.co
Mobile screenshot of tandem.edu.co
Mobile

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Hosting Provider

GoDaddy
godaddy.com

IP Address

160.153.133.215

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Strasbourg, France

ASN

AS21499

Organization

GoDaddy.com, LLC

Server

Apache

Nameservers

ns66.domaincontrol.com.ns65.domaincontrol.com.

Performance

89

Core Web Vitals

Weight

First Contentful Paint
1.6 s10%
Speed Index
2.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.8 MB
36 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv5.8.13
cms
Enfoldv4.5.2Custom
by Kriesi
View Theme

Technology Stack

8 Technologies Detected

Plugins

2
Click To Chat For WhatsappPopup Anything On Click

Libraries

1
jQueryv3.6.0

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Web Servers

1
Apache

Languages

1
PHPv7.2.34

SEO Analysis

C67/100
20
11
2
Meta Tags7/15
Content8/12
Headings5/8
Technical24/25
E-E-A-T5/7
Images3/7
Links2/5
URL5/5
Social0/5
Freshness4/4
Mobile1/4
Indexability3/3
T
tandem.edu.cotandem.edu.co

TANDEM – Apoyo en procesos escolares

No description available for this page.

Title Length36 chars

Recommended: 50-60 chars (~223px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (16/18) — critical for accessibility and SEO

13 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

16/100
Poor
4 13 1

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

D48/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
6/25
Citation
11/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
navheader/footer
Text ratio:5%
Words:401
Token eff.:Optimal
Sections/1K:2.5
Depth:2/5

Structured Data

Microdata
Article×1.2microdataPerson×1.3microdataOrganization×1.1microdata

Citation Readiness

Opening Summary103w
Descriptive Headingsavg 1w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
B
72/100
9
Passed
5
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
3/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
30/100
F
476 mg
CO₂e / view
3.8 MB
Page Weight
15%
Cleaner Than
New Visitor
545 mg
vs
Returning (cached)
272 mg
Annual (10K/mo)
57.2 kg
Emission Segments
Data Center
106 mg
Network
114 mg
Device
256 mg
Resource Breakdown
JavaScript
96.3 KB
Images
3.2 MB
CSS
444.5 KB
Fonts
576 B
HTML
14.3 KB
Green Hosting Not Verified
GoDaddy
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

40d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GoDaddy.com, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

03.05.2026

Valid Until

22.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

tandem.edu.cowww.tandem.edu.co

SHA-256 Fingerprint

52:BF:6B:F0:13:2F:74:97:DB:A8:2D:0D:77:F5:E4:F7:C2:CB:AE:49...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-length
14376
content-type
text/html; charset=UTF-8
date
Wed, 13 May 2026 13:51:44 GMT
link
<https://www.tandem.edu.co/wp-json/>; rel="https://api.w.org...
server
Apache
Good Warning Issue

Email Infrastructure

Google Workspace

Score

20

SPF
DKIM
DMARC

MX Records (5)

alt1.aspmx.l.google.com
alt3.aspmx.l.google.com
alt4.aspmx.l.google.com
aspmx.l.google.com

+1 more

Domain Information

tandem.edu.co

DNSSEC
Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
C
69/100
Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
Viewport
width=device-width, initial-scale=1, maximum-scale=1
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Acme + Arial

WCAG Partial
65/100
Readability
/30
20/30

16px · LH 1.65

Hierarchy
/20
9/20

2.5x ratio

WCAG
/25
14/25

1:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

Acme

Sans40px

Body Font

Arial

Sans16px

Contrast Ratio

1:1

40 issues

Reading Comfort

~36 CPL

Narrow lines
40px
h1
28px
h2
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 40 elements below WCAG AA threshold (min 1.0:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

GGoogle FontsFlesch 0

Color Palette

11 unique colors
3.68:1 AA Large Light
#ffffff
Background· 96.1%
#8b8575
Secondary· 0.5%
#4e5983
Primary· 0.5%
#c4c2af
Secondary· 0.5%
#e5e2dd
Border· 0.5%
#6a7bb0
Secondary· 0.4%
#87d5a3
Secondary· 0.3%
#b7b093
Secondary· 0.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Social Media

1
Facebook SDKFree

Social widgets and sharing tools

2

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

13 Resources

7
Scripts
6
Styles
0
Async
1
Defer

Top Script Sources

tandem.edu.co(7)

Website Identity

tandem.edu.co

Location detected: 🇫🇷 Francevia ip
📧 Google Workspacees

Social Profiles

FacebookInstagram

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Last analyzed: 13 May 2026 at 13:52

Historical Analysis & Change Tracking