Numpy.org - SEO Checker

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Meta information
74% 
Page quality
90% 
Page structure
46% 
Link structure
63% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.17 s
File size
37.20 kB
Words
922
Media files
44
Number of links
33 internal / 116 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
NumPy
The page title is too short. (65 pixels of 580 max pixel length) Optimize title
The page title is only one word.
There are no duplicate words in the title
Meta description
(Critically important)
Why NumPy? Powerful n-dimensional arrays. Numerical computing tools. Interoperable. Performant. Open source.
The length of the meta description is perfect. (705 pixels out of 1000 max pixel length)
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
Language defined in HTML: en
Server location: Canada
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
The alternate link to the page itself is missing.
An alternate link incorrectly contains an URL with a relative path.
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
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The favicon is linked correctly.

Meta tags

NameValue
generatorHugo 0.141.0
descriptionWhy NumPy? Powerful n-dimensional arrays. Numerical computing tools. Interoperable. Performant. Open source.
viewportwidth=device-width,initial-scale=1,shrink-to-fit=no
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twitter:cardsummary_large_image
twitter:imagehttps://numpy.org/images/numpy-image.jpg
twitter:titleNumPy
twitter:descriptionPowerful N-dimensional arrays Fast and versatile, the NumPy vectorization, indexing, and broadcasting concepts are the de-facto standards of array computing today. Numerical computing tools NumPy offers comprehensive mathematical functions, random number generators, linear algebra routines, Fourier transforms, and more. Open source Distributed under a liberal BSD license, NumPy is developed and maintained publicly on GitHub by a vibrant, responsive, and diverse community. Interoperable NumPy supports a wide range of hardware and computing platforms, and plays well with distributed, GPU, and sparse array libraries. Performant The core of NumPy is well-optimized C code. Enjoy the flexibility of Python with the speed of compiled code. Easy to use NumPy’s high level syntax makes it accessible and productive for programmers from any background or experience level.
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Page quality

Content
(Critically important)
These Typos were found:
  • catagories => categories
This page contains 922 words. That's ok.
24.4% of the text are stop words.
The page contains a listing, which indicates a good text layout.
19 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 18.44 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,shrink-to-fit=no" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 18 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://numpy.org/images/logo.svgNumPy logo.
..._images/sc_dom_img/quantum_computing.svgA computer chip.
...ges/sc_dom_img/statistical_computing.svgA line graph with the line moving up.
..._images/sc_dom_img/signal_processing.svgA bar chart with positive and negative values.
...t_images/sc_dom_img/image_processing.svgAn photograph of the mountains.
/images/content_images/sc_dom_img/sd6.svgA simple graph.
...mages/sc_dom_img/astronomy_processes.svgA telescope.
...ages/sc_dom_img/cognitive_psychology.svgA human head with gears.
...ent_images/sc_dom_img/bioinformatics.svgA strand of DNA.
...images/sc_dom_img/bayesian_inference.svgA graph with a bell-shaped curve.
...ges/sc_dom_img/mathematical_analysis.svgFour mathematical symbols.
.../content_images/sc_dom_img/chemistry.svgA test tube.
...content_images/sc_dom_img/geoscience.svgThe Earth.
/images/content_images/sc_dom_img/GIS.svgA map.
...s/content_images/sc_dom_img/robotics.svgA microprocessor development board.
/images/content_images/arlib/dask.pngDask
/images/content_images/arlib/cupy.pngCuPy
.../content_images/arlib/jax_logo_250px.pngJAX
/images/content_images/arlib/xarray.pngxarray
/images/content_images/arlib/sparse.pngsparse
...ntent_images/arlib/pytorch-logo-dark.svgPyTorch
...content_images/arlib/tensorflow-logo.svgTensorFlow
/images/content_images/arlib/arrow.pngarrow
/images/content_images/arlib/xtensor.pngxtensor
/images/content_images/arlib/awkward.svgawkward
/images/content_images/arlib/uarray.pnguarray
/images/content_images/arlib/tensorly.pngtensorly
/images/content_images/ds-landscape.pngDiagram of Python Libraries. The five catagories are 'Extract, Transform, Load', 'Data Exploration', 'Data Modeling', 'Data Evaluation' and 'Data Presentation'.
/images/content_images/data-science.pngDiagram of three overlapping circles. The circles are labeled 'Mathematics', 'Computer Science' and 'Domain Expertise'. In the middle of the diagram, which has the three circles overlapping it, is an area labeled 'Data Science'.
...ent_images/ml_img/tensorflow-ml-anim.gifAn animated gif showing a three-dimensional graph of embeddings made in Tensorflow.
/images/content_images/v_matplotlib.pngA streamplot made in matplotlib
/images/content_images/v_ggpy.pngA scatter-plot graph made in ggpy
/images/content_images/v_plotly.pngA box-plot made in plotly
/images/content_images/v_altair.pngA streamgraph made in altair
/images/content_images/v_seaborn.pngA pairplot of two types of graph, a plot-graph and a frequency graph made in seaborn"
/images/content_images/v_pyvista.pngA 3D volume rendering made in PyVista.
/images/content_images/v_napari.pngA multi-dimensionan image made in napari.
/images/content_images/v_vispy.pngA Voronoi diagram made in vispy.
...ontent_images/case_studies/blackhole.pngFirst image of a black hole. It is an orange circle in a black background.
...tent_images/case_studies/gravitional.pngTwo orbs orbiting each other. They are displacing gravity around them.
...s/content_images/case_studies/sports.jpgCricket ball on green field.
...ntent_images/case_studies/deeplabcut.pngCheetah pose analysis
https://numpy.org/images/logo.svgNumPy logo.

Page structure

H1 heading
(Critically important)
ECOSYSTEM
Too many H1 headings
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (9 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 ECOSYSTEM
H1 CASE STUDIES
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are too many external links (116) on this page.

Found links on this page

LinkAttributesAnchor text
https://numpy.org/installInstall
https://numpy.org/doc/stableDocumentation
https://numpy.org/learnLearn
https://numpy.org/communityCommunity
https://numpy.org/aboutAbout Us
https://numpy.org/newsNews
https://numpy.org/contributeContribute
https://numpy.org/pt/Português
https://numpy.org/ja/日本語 (Japanese)
https://numpy.org/es/Español
https://numpy.org/news/Latest release: NumPy 2.3. View all releases
https://numpy.org/newsNumPy 2.3.0 released!
https://numpy.org/news2025-06-07
https://github.com/numpy/numpy...External BSD license
https://github.com/numpy/numpyExternal publicly on GitHub
https://numpy.org/community/community
https://qutip.org/External QuTiP
https://pyquil-docs.rigetti.co...External Subdomain PyQuil
https://qiskit.org/External Qiskit
https://pennylane.ai/External PennyLane
https://pandas.pydata.org/External Subdomain Pandas
https://www.statsmodels.org/External Subdomain statsmodels
https://xarray.pydata.org/en/s...External Subdomain Xarray
https://seaborn.pydata.org/External Subdomain Seaborn
https://scipy.org/External SciPy
https://pywavelets.readthedocs...External Subdomain PyWavelets
https://python-control.org/External python-control
https://hyperspy.org/External HyperSpy
https://scikit-image.org/External Scikit-image
https://opencv.org/External OpenCV
https://mahotas.rtfd.io/External Subdomain Mahotas
https://networkx.org/External NetworkX
https://graph-tool.skewed.de/External Subdomain graph-tool
https://igraph.org/python/External igraph
https://pygsp.rtfd.io/External Subdomain PyGSP
https://www.astropy.org/External Subdomain AstroPy
https://sunpy.org/External SunPy
https://spacepy.github.io/External Subdomain SpacePy
https://www.psychopy.org/External Subdomain PsychoPy
https://biopython.org/External BioPython
http://scikit-bio.org/External Scikit-Bio
https://github.com/openvax/pye...External PyEnsembl
http://etetoolkit.org/External ETE
https://pystan.readthedocs.io/...External Subdomain PyStan
https://docs.pymc.io/External Subdomain PyMC
https://arviz-devs.github.io/a...External Subdomain ArviZ
https://emcee.readthedocs.io/External Subdomain emcee
https://scipy.org/External Text duplicate SciPy
https://www.sympy.org/External Subdomain SymPy
https://www.cvxpy.org/External Subdomain cvxpy
https://fenicsproject.org/External FEniCS
https://cantera.org/External Cantera
https://www.mdanalysis.org/External Subdomain MDAnalysis
https://github.com/rdkit/rdkitExternal RDKit
https://www.pybamm.org/External Subdomain PyBaMM
https://pangeo.io/External Pangeo
https://simpeg.xyz/External Simpeg
https://github.com/obspy/obspy...External ObsPy
https://www.fatiando.org/External Subdomain Fatiando a Terra
https://shapely.readthedocs.io/External Subdomain Shapely
https://geopandas.org/External GeoPandas
https://python-visualization.g...External Subdomain Folium
https://compas.dev/External COMPAS
https://cityenergyanalyst.com/External City Energy Analyst
https://nortikin.github.io/sve...External Subdomain Sverchok
https://dask.org/External Dask
https://cupy.dev/External CuPy
https://jax.readthedocs.io/External Subdomain JAX
https://xarray.pydata.org/en/s...External Subdomain Text duplicate Xarray
https://sparse.pydata.org/en/l...External Subdomain Sparse
https://pytorch.org/External PyTorch
https://www.tensorflow.org/External Subdomain TensorFlow
https://arrow.apache.org/External Subdomain Arrow
https://github.com/xtensor-sta...External xtensor
https://awkward-array.org/External Awkward Array
https://uarray.org/en/latest/External uarray
http://tensorly.org/stable/hom...External tensorly
/images/content_images/ds-land...New window IMG-ALT Diagram of Python Libraries. The five catagories are 'Extract, Transform, Load', 'Data Exploration', 'Data Modeling', 'Data Evaluation' and 'Data Presentatio...
https://pandas.pydata.org/External Subdomain Text duplicate Pandas
https://intake.readthedocs.io/External Subdomain Intake
https://pyjanitor-devs.github....External Subdomain PyJanitor
https://jupyter.org/External Jupyter
https://seaborn.pydata.org/External Subdomain Text duplicate Seaborn
https://matplotlib.org/External Matplotlib
https://altair-viz.github.io/External Subdomain Altair
https://scikit-learn.org/External scikit-learn
https://www.statsmodels.org/st...External Subdomain Text duplicate statsmodels
https://docs.pymc.io/External Subdomain Text duplicate PyMC
https://spacy.io/External spaCy
https://plotly.com/dashExternal Dash
https://panel.holoviz.org/External Subdomain Panel
https://voila.readthedocs.io/External Subdomain Voila
https://dask.org/External Text duplicate Dask
https://ray.io/External Ray
https://dvc.org/External DVC
https://mlflow.org/External MLFlow
https://airflow.apache.org/External Subdomain Airflow
https://dagster.io/External Dagster
https://www.prefect.io/External Subdomain Prefect
https://ai.googleblog.com/2016...External Subdomain IMG-ALT An animated gif showing a three-dimensional graph of embeddings made in Tensorflow.
https://ai.googleblog.com/2016...External Subdomain Source: Google AI Blog
https://scikit-learn.org/External Text duplicate scikit-learn
https://scipy.org/External Text duplicate SciPy
https://www.tensorflow.org/External Subdomain TensorFlow’s
https://pytorch.org/External Text duplicate PyTorch
https://scikit-learn.org/stabl...External ensemble methods
https://xgboost.readthedocs.io/External Subdomain XGBoost
https://lightgbm.readthedocs.i...External Subdomain LightGBM
https://catboost.ai/External CatBoost
https://www.scikit-yb.org/en/l...External Subdomain Yellowbrick
https://eli5.readthedocs.io/en...External Subdomain Eli5
https://www.fusioncharts.com/b...External Subdomain IMG-ALT A streamplot made in matplotlib
https://github.com/yhat/ggpyExternal IMG-ALT A scatter-plot graph made in ggpy
https://www.journaldev.com/196...External Subdomain IMG-ALT A box-plot made in plotly
https://altair-viz.github.io/g...External Subdomain IMG-ALT A streamgraph made in altair
https://seaborn.pydata.org/External Subdomain IMG-ALT A pairplot of two types of graph, a plot-graph and a frequency graph made in seaborn"
https://docs.pyvista.org/External Subdomain IMG-ALT A 3D volume rendering made in PyVista.
https://napari.org/External IMG-ALT A multi-dimensionan image made in napari.
https://vispy.org/gallery/inde...External IMG-ALT A Voronoi diagram made in vispy.
https://pyviz.org/overviews/in...External Python visualization landscape
https://matplotlib.org/External Text duplicate Matplotlib
https://seaborn.pydata.org/External Subdomain Text duplicate Seaborn
https://plot.ly/External Plotly
https://altair-viz.github.io/External Subdomain Text duplicate Altair
https://docs.bokeh.org/en/latest/External Subdomain Bokeh
https://holoviz.org/External Holoviz
http://vispy.org/External Vispy
https://napari.org/External Napari
https://docs.pyvista.org/External Subdomain PyVista
/case-studies/blackhole-imageFirst Image of a Black Hole How NumPy, together with libraries like SciPy and Matplotlib that depend on NumPy, enabled the Event Horizon Telescope to produce...
IMG-ALT First image of a black hole. It is an orange circle in a black background.
/case-studies/gw-discovDetection of Gravitational Waves In 1916, Albert Einstein predicted gravitational waves; 100 years later their existence was confirmed by LIGO scientists usi...
IMG-ALT Two orbs orbiting each other. They are displacing gravity around them.
/case-studies/cricket-analyticsSports Analytics Cricket Analytics is changing the game by improving player and team performance through statistical modelling and predictive analytics. NumP...
IMG-ALT Cricket ball on green field.
/case-studies/deeplabcut-dnnPose Estimation using deep learning DeepLabCut uses NumPy for accelerating scientific studies that involve observing animal behavior for better understanding...
IMG-ALT Cheetah pose analysis
https://numpy.org/installText duplicate Install
https://numpy.org/doc/stableText duplicate Documentation
https://numpy.org/learnText duplicate Learn
https://numpy.org/citing-numpyCiting NumPy
/neps/roadmap.htmlRoadmap
https://numpy.org/aboutAbout us
https://numpy.org/communityText duplicate Community
https://numpy.org/user-surveysUser surveys
https://numpy.org/contributeText duplicate Contribute
https://numpy.org/code-of-conductCode of conduct
https://numpy.org/gethelpGet help
https://numpy.org/termsTerms of use
https://numpy.org/privacyPrivacy
https://numpy.org/press-kitPress kit
https://github.com/numpy/numpyExternal No Text
https://www.youtube.com/@NumPy...External Subdomain No Text

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://numpy.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 is excellent with 0.17 seconds.
The file size of the HTML document is fine (37 kB).

HTTP Response Header

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External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 5,727 referring domains.
This page has 28,766 backlinks.
This page has backlinks from 3,902 different ip addresses.

Links from Wikipedia

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numpy.org
NumPy
Why NumPy? Powerful n-dimensional arrays. Numerical computing tools. Interoperable. Performant. Open source.

Most important keywords

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

KeywordResultRecheck
NumPy71%Check
Try NumPy54%Check
import NumPy53%Check
array50%Check
ECOSYSTEM50%Check
computing48%Check
arrays48%Check
Powerful46%Check
Numerical46%Check
tools46%Check
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