Astronomerstelegram.org - SEO Checker

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Overview of the SEO Check
Meta information
74% 
Page quality
54% 
Page structure
58% 
Link structure
25% 
Server
31% 
External factors
100% 
SEO Score
Response time
1.43 s
File size
28.50 kB
Words
1335
Media files
4
Number of links
66 internal / 4 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The Astronomer's Telegram
The length of the page title is perfect. (245 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is specified.
Language
(Somewhat important)
Language detected in text: en
Server location: Canada
The language is not specified in the HTML markup.
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain name is very long.
The domain is no subdomain.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
robotsall
og:typewebsite
og:imagehttp://www.astronomerstelegram.org/favicon.ico
og:site_nameThe Astronomer's Telegram
content-typetext/html;charset=UTF-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
The average number of words per sentence of 3.39 words is low.
This page contains 1335 words. That's ok.
18.4% of the text are stop words.
25 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No viewpoint tag is provided.
No Apple touch icon is specified.
This page only loads 2 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The following tag is repeated too often: telegram index
Image SEO
(Somewhat important)
2 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
/IMG/ATelBanner.pngThe Astronomer's Telegram
/IMG/100B.pngSupport ATel At Patreon
/IMG/rrutledgeatel.gifNo alt attribute provided
/IMG/dfoxatel.gifNo alt attribute provided

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
There are no headings specified on the page. Headings are important for search engine optimization and help to structure your content.

Heading structure

No headings were found.
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
There are 4 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://patreon.com/astronomer...External Patreon
https://mastodon.coffee/@astro...External Mastodon
https://x.com/astronomerstel/External X
/Subdomain IMG-ALT The Astronomer's Telegram
/?printformSubdomain Post
/?reconfigureSubdomain Search
/?informSubdomain Policies
/?getcredentialformSubdomain Credential
/?listxmlSubdomain Feeds
/?emailsubupdateSubdomain Email
/conf.htmlThis space for free
https://www.patreon.com/astron...External Subdomain IMG-ALT Support ATel At Patreon
/?displayallSubdomain All
/?read=17200Subdomain CTA 102 shows strongly increasing optical activity again after quiet years
/?read=17199Subdomain Independent Discovery of a Probable Nova in M31 and a Prediscovery Detection of PNV J00424614+4112388 = AT 2025kiq
/?read=17198Subdomain SVOM detection of the onset of a new outburst from the HMXB 4U 1416-62
/?read=17197Subdomain Fermi-LAT detection of renewed gamma-ray activity from the FSRQ NRAO 190 (PKS 0440-00)
/?read=17196Subdomain ASASSN-25bv: Two Recent, Deep Dimming Events
/?read=17195Subdomain Deep JWST/NIRCam Imaging of FRB 20250316A: Detection of Potential IR Counterparts
/?read=17194Subdomain Multi-band radio emission enhancement of the flat spectrum radio quasar OP 313
/?read=17193Subdomain 3C 138: Millimeter/submillimeter polarized flare
/?read=17192Subdomain New outburst of the Galactic center transient Swift J174535.5-285921 seen with Swift/XRT
/?read=17191Subdomain The neutron star LMXB EXO0748-676 has returned to quiescence
/?read=17190Subdomain The optical fading and X-ray softening of the Galactic X-ray transient AT2019wey
/?read=17189Subdomain Discovery of a new milli-second pulsar Toward the Bulge
/?read=17188Subdomain MAXI J2101-802: likely a giant X-ray flare as observed with EP-FXT follow-up
/?read=17187Subdomain Multi-wavelength monitoring of MAXI J1957+032 from outburst to quiescence
/?read=17186Subdomain MAXI/GSC detection of a probable X-ray transient MAXI J2101-802
/?read=17185Subdomain The brightness of blazar B2 1308+326 is at 3-year maximae
/?read=17184Subdomain The flaring blazar OP 313 reached an exceptional optical brightness
/?read=17183Subdomain Einstein Probe detects an X-ray flare in the globular cluster M62
/?read=17182Subdomain M31N 2025-02b is a Recurrence of the Newly-Identified Recurrent Nova M31N 2001-11a
/?read=17181Subdomain Fermi-LAT detection of enhanced gamma-ray activity from the FSRQ Ol 280
/?read=17180Subdomain Fermi-LAT detection of renewed gamma-ray activity from the CSS 3C 138
/?read=17179Subdomain A New NIR Flare of the FSRQ OP313
/?read=17178Subdomain Independent Discovery of a Probable Nova in M31
/?read=17177Subdomain XRISM/Xtend Transient Search (XTS) detected an X-ray flare from an AGN candidate
/?read=17176Subdomain Spectroscopic Classification of Astrophysical Transients with the Lick Shane Telescope
/?read=17175Subdomain A New Analysis of Non-Radial Pulsations in SXP 59.0
/?read=17174Subdomain Quick Radio Brightening of Galactic Center Transient MAXI J1744-294 at 33 and 43 GHz
/?read=17173Subdomain Optical Flares of the blazars OP 313 and PG 1553+113
/?read=17172Subdomain MAXI J1957+032: Swift-XRT detection and localization
/?read=17171Subdomain ATLAS optical observations of the millisecond X-ray pulsar MAXI J1957+032 in outburst
/?read=17170Subdomain MAXI/GSC detection of an X-ray outburst from the millisecond X-ray pulsar MAXI J1957+032
/?read=17169Subdomain Text duplicate Spectroscopic Classification of Astrophysical Transients with the Lick Shane Telescope
/?read=17168Subdomain Einstein Probe detects possible X-ray brightening of the Low-Mass X-ray Binary 4U 1246-58
/?read=17167Subdomain Fermi-LAT detection of renewed gamma-ray activity from OP 313
/?read=17166Subdomain IGR J17091-3624 returns back to quiescence : Optical monitoring with LCO
/?read=17165Subdomain e-MERLIN non-detection of supernova SN2025gvs in UGC10058
/?read=17164Subdomain 4U 1630-47 in an unusually radio-bright state
/?read=17163Subdomain SRG/ART-XC detection of the outburst in historic SMC pulsar XTE J0111.2-7317 (SXP31)
/?read=17162Subdomain Fermi-LAT detection of enhanced gamma-ray activity from the BL Lac PMN J1315-5334
/?read=17161Subdomain Text duplicate Spectroscopic Classification of Astrophysical Transients with the Lick Shane Telescope
/?read=17160Subdomain Fermi-LAT gamma-ray observations of IceCube-250421A
/?read=17159Subdomain X-ray outburst of a radio-loud quasar
/?atelstreamATELstream
/?read=17194Subdomain Text duplicate Multi-band radio emission enhancement of the flat spectrum radio quasar OP 313
/?read=17185Subdomain Text duplicate The brightness of blazar B2 1308+326 is at 3-year maximae
/?read=17184Subdomain Text duplicate The flaring blazar OP 313 reached an exceptional optical brightness
/?read=17179Subdomain Text duplicate A New NIR Flare of the FSRQ OP313
/?read=17173Subdomain Text duplicate Optical Flares of the blazars OP 313 and PG 1553+113
/?read=17199Subdomain Text duplicate Independent Discovery of a Probable Nova in M31 and a Prediscovery Detection of PNV J00424614+4112388 = AT 2025kiq
/?read=17198Subdomain Text duplicate SVOM detection of the onset of a new outburst from the HMXB 4U 1416-62
/?read=17200Subdomain Text duplicate CTA 102 shows strongly increasing optical activity again after quiet years
/?read=17195Subdomain Text duplicate Deep JWST/NIRCam Imaging of FRB 20250316A: Detection of Potential IR Counterparts
/?read=17176Subdomain Text duplicate Spectroscopic Classification of Astrophysical Transients with the Lick Shane Telescope
/?read=17169Subdomain Text duplicate Spectroscopic Classification of Astrophysical Transients with the Lick Shane Telescope
/?read=17165Subdomain Text duplicate e-MERLIN non-detection of supernova SN2025gvs in UGC10058
/?read=17161Subdomain Text duplicate Spectroscopic Classification of Astrophysical Transients with the Lick Shane Telescope
/Subdomain Telegram Index

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://astronomerstelegram.org/"
HTTP header
(Important)
The used PHP version is outdated and may be a security risk.
The HTML page should be transferred using GZip compression.
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time is slow (1.43 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
This page only loads 1 CSS files. That's ok.
This page only loads 2 JavaScript files. That's good!
The file size of the HTML document is fine (29 kB).

HTTP Response Header

NameValue
dateThu, 22 May 2025 13:07:36 GMT
serverApache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/5.4.16
set-cookie101 Characters
transfer-encodingchunked
content-typetext/html; charset=utf-8
statuscode200
http_versionHTTP/1.1

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 130 referring domains.
This page has 230 backlinks.
This page has backlinks from 112 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-Agent: *
Allow: /

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Most important keywords

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KeywordResultRecheck
Telegram64%Check
Telegram Index51%Check
Email39%Check
Index39%Check
Circulation39%Check
ATel38%Check
Astronomer's Telegram38%Check
Telegrams36%Check
Patreon36%Check
X-ray34%Check
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