Bubblelevel.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
65% 
Page structure
99% 
Link structure
97% 
Server
97% 
External factors
87% 
SEO Score
Response time
0.46 s
File size
40.10 kB
Words
501
Media files
1
Number of links
18 internal / 1 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Online Bubble Level - Free Spirit Level Tool | bubblelevel.org
The length of the page title is perfect. (540 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Free online horizontal spirit level. Live tilt in degrees, calibration, ±0.2° tolerance band, and haptic buzz when centered.
The length of the meta description is perfect. (729 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://bubblelevel.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
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 is no subdomain.
The domain length is good.
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
viewportwidth=device-width, initial-scale=1
apple-itunes-appapp-id=6759446110
descriptionFree online horizontal spirit level. Live tilt in degrees, calibration, ±0.2° tolerance band, and haptic buzz when centered.
langen
twitter:cardsummary
twitter:titleOnline Bubble Level — Free Spirit Level Tool
twitter:descriptionFree online horizontal spirit level. Live tilt in degrees, calibration, ±0.2° tolerance band, and haptic buzz when centered.
twitter:imagehttps://bubblelevel.org/og.png
og:typewebsite
og:titleOnline Bubble Level — Free Spirit Level Tool
og:descriptionFree online horizontal spirit level. Live tilt in degrees, calibration, ±0.2° tolerance band, and haptic buzz when centered.
og:urlhttps://bubblelevel.org/
og:site_nameBubbleLevel.Org
og:imagehttps://bubblelevel.org/og.png
charsetutf-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
Words from the H1 heading are not used in the page content.
This page contains 501 words. That's ok.
36.5% of the text are stop words.
10 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 13.03 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 10 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
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
https://bubblelevel.org/qr.pngScan to open bubblelevel.org on your phone

Page structure

H1 heading
(Critically important)
Online Bubble Level
The H1 heading is too short (19 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Online Bubble Level
H2 How to Check if a Surface is Level
H2 Frequently Asked Questions
H3 Related Tools
H3 How accurate is a phone bubble level?
H3 Why does the bubble move when my phone is on a flat table?
H3 Does this work without internet?
H3 Why do I need to tap "Check Level" first?
H3 Can I use this to level a picture frame?
H3 The bubble isn't moving at all
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 1 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://bubblelevel.org/BubbleLevel.Org
https://bubblelevel.org/Horizontal Level
https://bubblelevel.org/vertical/Vertical Level
https://bubblelevel.org/dual/2-Axis Level
https://bubblelevel.org/timer/Timer Level
/plumb-level/Plumb Level
https://bubblelevel.org/Horizontal
https://bubblelevel.org/vertical/Vertical
https://bubblelevel.org/dual/2-Axis
https://bubblelevel.org/timer/Timer
/plumb-level/Plumb
https://bubblelevel.org/vertical/↕ Vertical Level Front–back tilt
https://bubblelevel.org/dual/⊕ 2-Axis Level Both axes at once
/plumb-level/⊥ Plumb Level Wall & doorframe plumb
https://apps.apple.com/app/id6...New window External Subdomain Get it on theApp Store
https://bubblelevel.org/vertical/Text duplicate Vertical Level
https://bubblelevel.org/dual/Text duplicate 2-Axis Level
https://bubblelevel.org/vertical/Text duplicate Vertical Level
https://bubblelevel.org/privacy/Privacy & Contact

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://bubblelevel.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time of 0.46 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
The file size of the HTML document is fine (40 kB).

HTTP Response Header

NameValue
dateSun, 31 May 2026 16:02:23 GMT
content-typetext/html; charset=utf-8
access-control-allow-origin*
cache-controlpublic, max-age=0, must-revalidate
nel{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
referrer-policystrict-origin-when-cross-origin
x-content-type-optionsnosniff
report-to{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=bXOlQ9BTU3WRSy5uuaKi9R2nrhg0JM2w9QMPIRgcS37uX2XSmifvE9p%2Bjw4W8jf7iEFuH6EyUOWTdeN%2FqSkaTFZI352vww0qqliXYsHgm%2BmwPD7afD4cA447XHfzcRiY0u8%3D"}]}
speculation-rules"/cdn-cgi/speculation"
servercloudflare
varyaccept-encoding
cf-cache-statusDYNAMIC
content-encodingbr
cf-raya04733e0583f9734-FRA
alt-svch3=":443"; ma=86400
statuscode200
http_versionHTTP/2

External factors

This page is very well linked from other websites.
This page has backlinks from 29 referring domains.
This page has 42 backlinks.
This page has backlinks from 18 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

# As a condition of accessing this website, you agree to abide by the following
# content signals:

# (a)  If a Content-Signal = yes, you may collect content for the corresponding
#      use.
# (b)  If a Content-Signal = no, you may not collect content for the
#      corresponding use.
# (c)  If the website operator does not include a Content-Signal for a
#      corresponding use, the website operator neither grants nor restricts
#      permission via Content-Signal with respect to the corresponding use.

# The content signals and their meanings are:

# search:   building a search index and providing search results (e.g., returning
#           hyperlinks and short excerpts from your website's contents). Search does not
#           include providing AI-generated search summaries.
# ai-input: inputting content into one or more AI models (e.g., retrieval
#           augmented generation, grounding, or other real-time taking of content for
#           generative AI search answers).
# ai-train: training or fine-tuning AI models.

# ANY RESTRICTIONS EXPRESSED VIA CONTENT SIGNALS ARE EXPRESS RESERVATIONS OF
# RIGHTS UNDER ARTICLE 4 OF THE EUROPEAN UNION DIRECTIVE 2019/790 ON COPYRIGHT
# AND RELATED RIGHTS IN THE DIGITAL SINGLE MARKET.

# BEGIN Cloudflare Managed content

User-agent: *
Content-Signal: search=yes,ai-train=no
Allow: /

User-agent: Amazonbot
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: CloudflareBrowserRenderingCrawler
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: meta-externalagent
Disallow: /

# END Cloudflare Managed Content

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Search preview

bubblelevel.org
Online Bubble Level - Free Spirit Level Tool | bubblelevel.org
Free online horizontal spirit level. Live tilt in degrees, calibration, ±0.2° tolerance band, and haptic buzz when centered.

Most important keywords

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

KeywordResultRecheck
Level93%Check
Bubble Level82%Check
Bubble77%Check
Online Bubble Level77%Check
Online73%Check
spirit level73%Check
Check Level70%Check
spirit58%Check
BubbleLevel58%Check
Org58%Check
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