Astronomerstelegram.org - SEO Checker

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Overview of the SEO Check
Meta information
74% 
Page quality
56% 
Page structure
58% 
Link structure
25% 
Server
31% 
External factors
100% 
SEO Score
Response time
1.46 s
File size
29.10 kB
Words
1409
Media files
4
Number of links
69 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. (248 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: United States of America
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 4.97 words is low.
This page contains 1409 words. That's ok.
16.8% of the text are stop words.
24 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=16872Subdomain Historical NIR light maximum of the blazar B2 2234+28A
/?read=16871Subdomain Onset of the 0.3-10 keV flare in TeV-Detected Blazar H1426+428
/?read=16870Subdomain Independent Discovery of a Probable Nova in M31
/?read=16869Subdomain Discovery of a nova candidate in M31 (ULL-ASTRO-MASTER-11) with the IAC80 telescope
/?read=16868Subdomain Fermi-LAT detection of renewed gamma-ray activity from the FSRQ S5 0633+73
/?read=16867Subdomain Historical NIR light maximum of the FSRQ PKS J2301-0158
/?read=16866Subdomain Swift UV and X-ray Observation of GOTO 065054.49+593624.51
/?read=16865Subdomain LAST optical observations of the blazar BL Lacertae in bright optical state
/?read=16864Subdomain e-Merlin follow-up of the candidate PRS associated with FRB20240114A
/?read=16863Subdomain Large NIR flare of the FSRQ 4C+27.50
/?read=16862Subdomain Addendum to ATel #16857
/?read=16861Subdomain Detection of flaring very-high-energy gamma-ray emission from BL Lacertae with the MAGIC telescopes
/?read=16860Subdomain Text duplicate Independent Discovery of a Probable Nova in M31
/?read=16859Subdomain Probing the cyclotron resonant scattering feature in the X-ray pulsar 2S 1553-542 with NuSTAR during the 2024 outburst
/?read=16858Subdomain NOT and LT spectra of GOTO065054.49+593624.51 confirms its Galactic nature
/?read=16857Subdomain POSSIBLE DISINTEGRATION OF THE NUCLEUS OF COMET C/2024 S1 (ATLAS)
/?read=16856Subdomain The blazar BL Lacertae is brightening in Optical bands
/?read=16855Subdomain Swift follow-up observations of BL Lacertae
/?read=16854Subdomain VERITAS Detection of Gamma-ray Flaring Activity from BL Lacertae
/?read=16853Subdomain Einstein Probe detection of the brightening of LMXB EXO 0748-676/UY Vol
/?read=16852Subdomain MeerKAT detection of a radio flare from black hole X-ray binary V4641 Sgr
/?read=16851Subdomain GOTO065054.49+593624.51: detection of X-ray emission by Einstein Probe
/?read=16850Subdomain LHAASO detects rapid variability of the TeV Gamma-ray Activity of BL Lacertae
/?read=16849Subdomain Fermi-LAT detection of enhanced gamma-ray activity from the blazar BL Lacertae
/?read=16848Subdomain Report on the NuEM-240926A AMON Alert
/?read=16847Subdomain Optical follow-up observations of GOTO065054.49+593624.51
/?read=16846Subdomain NICER observation of Be/X-ray binary pulsar 2S 1553-542 during its 2024 outburst
/?read=16845Subdomain Fermi-LAT detection of enhanced gamma-ray activity from the CSS Quasar 3C 138
/?read=16844Subdomain Erratum in ATel#16841: V- and R-band photometry
/?read=16843Subdomain Likely spectral transition of Aql X-1 seen by SVOM/ECLAIRs.
/?read=16842Subdomain GOTO065054.49+593624.51: Discovery of a bright optical galactic transient
/?read=16841Subdomain OAN-SPM VR observations during the optical rise of Aql X-1
/?read=16840Subdomain Aql X-1: still at maximal levels
/?read=16839Subdomain Fermi/GBM detects outburst from Be/X-ray binary 2S 1553-542
/?read=16838Subdomain Bursts from Soft Gamma Repeater SGR 1806-20
/?read=16837Subdomain SVOM/ECLAIRs likely detection of a burst from SGR Swift J1818.0-1607
/?read=16836Subdomain Detection of H-alpha emission from M31 nova candidate AT2024rkz
/?read=16835Subdomain MAXI/GSC detection of an X-ray outburst from the Be/X-ray binary pulsar 2S 1553-542 (H 1553-542)
/?read=16834Subdomain High radio state of the high-redshift blazar PKS 2126-15
/?read=16833Subdomain ASASSN-24fw: A Main Sequence Star with a Deep Dimming Event
/?read=16832Subdomain Tighter upper limits to radio emission from GAIA BH3 with the VLA
/?read=16831Subdomain Gradual optical brightening in GRO J0422+32 during quiescence: precursor to an outburst?
/?read=16830Subdomain Title: Evolution of the recent optical flare of the blazar BL Lacertae
/?read=16829Subdomain Detection of thermonuclear bursts and X-ray reflection in Aql X-1 with the NuSTAR
/?read=16828Subdomain Erratum in ATel 16827: correct count rate
/?read=16827Subdomain X-ray detection of the transient and candidate recurrent nova SSS 1 in NGC 300
/?read=16826Subdomain X-ray observation of Aql X-1 with the Neil Gehrels Swift Observatory
/?atelstreamATELstream
/?read=16865Subdomain Text duplicate LAST optical observations of the blazar BL Lacertae in bright optical state
/?read=16861Subdomain Text duplicate Detection of flaring very-high-energy gamma-ray emission from BL Lacertae with the MAGIC telescopes
/?read=16856Subdomain Text duplicate The blazar BL Lacertae is brightening in Optical bands
/?read=16855Subdomain Text duplicate Swift follow-up observations of BL Lacertae
/?read=16854Subdomain Text duplicate VERITAS Detection of Gamma-ray Flaring Activity from BL Lacertae
/?read=16850Subdomain Text duplicate LHAASO detects rapid variability of the TeV Gamma-ray Activity of BL Lacertae
/?read=16849Subdomain Text duplicate Fermi-LAT detection of enhanced gamma-ray activity from the blazar BL Lacertae
/?read=16857Subdomain Text duplicate POSSIBLE DISINTEGRATION OF THE NUCLEUS OF COMET C/2024 S1 (ATLAS)
/?read=16872Subdomain Text duplicate Historical NIR light maximum of the blazar B2 2234+28A
/?read=16871Subdomain Text duplicate Onset of the 0.3-10 keV flare in TeV-Detected Blazar H1426+428
/?read=16864Subdomain Text duplicate e-Merlin follow-up of the candidate PRS associated with FRB20240114A
/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 (1.46 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
dateWed, 23 Oct 2024 07:06:21 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 2,682 referring domains.
This page has 53,814 backlinks.
This page has backlinks from 1,427 different ip addresses.

Links from Wikipedia

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Robots.txt

User-Agent: *
Allow: /

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Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
Telegram64%Check
Telegram Index51%Check
Email39%Check
Index39%Check
ATel38%Check
Astronomer's Telegram38%Check
Telegrams36%Check
10 Oct 202435%Check
Oct34%Check
Oct 202434%Check
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