mathdf.com
Registered
Page analyze update date:
2026/03/30 12:22:19
Last whois update date:
2026/03/14 08:41:19
Domain Status
Registered
Paid till
06.04.2027
Available from
06.05.2027
×
![Fullscreen website screenshot]()
mathdf.com Website screenshot
SEO Score
81.51%
119
Score achieved
146
Maximum score
Main Information
Title: Step-by-step calculators - MathDF
Description: Online calculators with step-by-step solutions: derivatives, integrals, equations, inequalities, ODEs, limits, complex numbers. Scan problems from photos and plot graphs!
Keywords: unknown
Page Encoding:
utf-8
Page Filesize: 64 KB
Server Information
IP: 146.103.104.156
Location: The Netherlands,NL,Amsterdam,1012,52.3759,4.8975,Europe/Amsterdam
Http Server: nginx
Encoding: utf-8
Meta Tags List
- charset: utf-8
- name: viewport content: width=device-width, initial-scale=1
- name: description content: Online calculators with step-by-step solutions: derivatives, integrals, equations, inequalities, ODEs, limits, complex numbers. Scan problems from photos and plot graphs!
- name: keywords content: calculator, online calculator, derivatives, integrals, equations, inequalities, ordinary differential equations, limits, matrices, systems of equations, complex numbers, function graphs, step-by-step calculators
- name: robots content: index, follow
- name: theme-color content: #ffffff
- property: og:site_name content: MathDF
- property: og:title content: Step-by-step calculators - MathDF
- property: og:type content: website
- property: og:url content: https://mathdf.com/
- property: og:image content: https://mathdf.com/logo/og_image.png
- property: og:image:width content: 256
- property: og:image:height content: 256
- property: og:description content: Online calculators with step-by-step solutions: derivatives, integrals, equations, inequalities, ODEs, limits, complex numbers. Scan problems from photos and plot graphs!
Internal Links
Whois Information
domain_name: mathdf.com
update_date: 2026-03-01T21:30:39Z
update_time: 1772400639
creation_date: 2020-04-06T18:56:56Z
creation_time: 1586199416
expiration_date: 2027-04-06T18:56:56Z
Whois Raw Data
Domain Name: MATHDF.COM
Registrar: NameSilo, LLC
Domain Status: client transfer prohibited
Creation Date: 2020-04-06T18:56:56Z
Registry Expiry Date: 2027-04-06T18:56:56Z
Updated Date: 2026-03-01T21:30:39Z
Name Server: GNS21.CLOUDNS.NET
Name Server: GNS22.CLOUDNS.NET
Name Server: GNS23.CLOUDNS.NET
Name Server: GNS24.CLOUDNS.NET
REGISTRAR Contact: NameSilo, LLC
>>> Last update of RDAP database: 2026-03-14T08:41:19Z
Robots.txt
User-agent: * Sitemap: https://mathdf.com/sitemap.xml
SEO Audit
Technical SEO
✓
Response Code
200
Status 200 OK - page loads correctly.
✓
Character Encoding
Page: utf-8, Header: utf-8
Character encoding consistent between HTML and headers.
✓
Page Size
66349 bytes
Page size acceptable for fast loading.
!
Resources
108 total
Too many resources. Optimize and combine files for better performance.
✓
Hreflang Tags
39 hreflang tags
Hreflang tags found for multilingual SEO.
✓
Robots.txt
Exists
Robots.txt file found.
✓
Sitemap
Declared in robots.txt
Sitemap declared in robots.txt.
✓
HTTPS
Yes
Secure HTTPS connection enabled.
✓
Compression
gzip
Gzip or Zstd compression enabled for faster loading.
✓
Caching
no-store, no-cache, must-revalidate
Cache-control headers properly set.
✓
Page Speed
0.44 ms
Excellent loading speed.
On-Page SEO
✓
Title
Step-by-step calculators - MathDF
Good title length (30-60 characters).
!
Meta Description
Online calculators with step-by-step solutions: derivatives, integrals, equations, inequalities, ODEs, limits, complex numbers. Scan problems from photos and plot graphs! Lenght:170
Meta description too long. Reduce to 100-160 characters.
✓
H1 Heading
1 found - "Step-by-step calculators:"
Good - single H1 heading found.
✓
Word Count
868
Good content length (500-2000 words recommended).
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
✓
Duplicate Meta
[]
No duplicate meta tags found.
✓
Keywords
unknown
Meta keywords set (note: not used by major search engines).
Content and UX
✓
Language
en
Language attribute properly set.
!
Images
22 total, 21 missing ALT
Add ALT text to images for accessibility and SEO.
✓
Viewport
width=device-width, initial-scale=1
Viewport meta tag properly set for mobile devices.
✓
Open Graph
All OG tags present.
All essential OpenGraph tags present.
✓
Structured Data
1 JSON-LD scripts
Structured data (JSON-LD) found.
Positions in Google
Search Phrases - Google
| Position | Phrase | Page | Snippet |
|---|---|---|---|
| 1 | /lim/ru/ | ||
| 1 | /der/ru/ | ||
| 1 | /der/ru/ | ||
| 1 | /der/ru/ | ||
| 1 | /lim/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /der/ru/ | ||
| 1 | /der/ru/ | ||
| 1 | /der/ru/ |
Positions in Yandex
Search Phrases - Yandex
| Position | Phrase | Page | Snippet |
|---|---|---|---|
| 1 | /der/ru/ | ||
| 1 | /der/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /equ/ru/ | ||
| 1 | /dif/ru/ |