diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 0000000..04bfe70
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,20 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = src
+BUILDDIR      = doc
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..c3671e6
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,8 @@
+## Documentation
+
+The [API Documentation](https://equib.github.io/pyEQUIB/doc/) is available on [equib.github.io/pyEQUIB](https://equib.github.io/pyEQUIB/). The documentation for AtomNeb is produced by [Sphinx](https://www.sphinx-doc.org) Python Documentation Generator using the [Sphinx RTD theme](https://pypi.org/project/sphinx-rtd-theme/). 
+
+
+
+
+
diff --git a/docs/doc.pdf b/docs/doc.pdf
new file mode 100644
index 0000000..177d787
Binary files /dev/null and b/docs/doc.pdf differ
diff --git a/docs/make.bat b/docs/make.bat
new file mode 100644
index 0000000..92e0f06
--- /dev/null
+++ b/docs/make.bat
@@ -0,0 +1,35 @@
+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=src
+set BUILDDIR=doc
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.http://sphinx-doc.org/
+	exit /b 1
+)
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd
diff --git a/docs/src/conf.py b/docs/src/conf.py
new file mode 100644
index 0000000..e744c6d
--- /dev/null
+++ b/docs/src/conf.py
@@ -0,0 +1,81 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# This file only contains a selection of the most common options. For a full
+# list see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+import os
+import sys
+#sys.path.insert(0, os.path.abspath('.'))
+sys.path.insert(0, os.path.abspath('../../pyequib'))
+sys.setrecursionlimit(1500)
+
+
+# -- Project information -----------------------------------------------------
+
+project = 'pyEQUIB'
+copyright = '2020, Ashkbiz Danehkar'
+author = 'Ashkbiz Danehkar'
+
+# The full version, including alpha/beta/rc tags
+release = '0.2.0'
+
+
+# -- General configuration ---------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+#extensions = []
+#extensions = ['sphinx.ext.todo', 'sphinx.ext.viewcode', 'sphinx.ext.autodoc']
+extensions = ['sphinx.ext.autodoc']
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = []
+
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+
+on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+if not on_rtd:  # only import and set the theme if we're building docs locally
+    import sphinx_rtd_theme
+    html_theme = 'sphinx_rtd_theme'
+    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+    html_theme_options = {
+       'canonical_url': '',
+       #'analytics_id': 'UA-XXXXXXX-1',  #  Provided by Google in your dashboard
+       #'logo_only': False,
+       'display_version': True,
+       'prev_next_buttons_location': 'bottom',
+       'style_external_links': False,
+       #'vcs_pageview_mode': '',
+       #'style_nav_header_background': 'white',
+       # Toc options
+       'collapse_navigation': True,
+       'sticky_navigation': True,
+       'navigation_depth': 4,
+       'includehidden': True,
+       'titles_only': False
+       }
+else:
+   html_theme = 'alabaster'
+   
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_static']
diff --git a/docs/src/index.rst b/docs/src/index.rst
new file mode 100644
index 0000000..6a990dc
--- /dev/null
+++ b/docs/src/index.rst
@@ -0,0 +1,19 @@
+.. pyEQUIB documentation master file, created by
+   sphinx-quickstart on Tue Oct 13 18:56:35 2020.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Welcome to pyEQUIB's documentation!
+===================================
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+   :name: mastertoc
+
+pyEQUIB API functions
+=====================
+.. automodule:: pyequib
+   :members:
+
+