Tetrabyblos is an extremely easy Word Press plugin to install and manage,
which allows for any cyber user to get his personal astrological chart from your
website and, if you wish so, to obtain a first preliminary Interpretation report
completely written and controlled by you. This is an innovative and, we like to
think, precious and necessary plugin which does not exists as an independent
script, on the world market of web services – thus the Word Press format for
implementation in order to facilitate its use. The plugin does not rely on third
party services or resources. It’s an independent solution. The plugin
calculates:

• Ecliptic tropical/sidereal longitude of the major celestial bodies/points (Sun to Pluto, Lilith, ascendant. Mid-heaven, moon’s nodes, Syzygy and about 90 major Arabic Parts), about 60 important stars in astrology and the cusps of the houses – both for radix (birth chart) and current transit.
• Enumerates the Dignities (including Terms and Faces), Elements and Qualities (with percentages) of the planets and the most important aspects between them. Select essential dignities table system between Ptolemy and Dorotheus (or the users can make their own personalized table). Calculate the essential dignities scores (according to the table system chosen).
• Gives the primary astrological Vedic – Jyotisha – information for that chart: Nakshatram, Yoga, Karana, Thiti, Pada, Rasi, madhya/sandhi houses, and Dasa periods (birth and current). By default, uses the Lahiri Ayanamsa when the tropical chart is requested for mutual comparison of both systems. Coordinates both of the Rasi and the Nakshatra are given, with Pada and house position.
• Has 13 different House systems at your disposal (like Placidus, Porphyrius, Equal, Regiomontanus, Campanus, Morinus, Koch, Topocentric, etc.)
• Has 13 different reference Ayanamsas (like Lahiri, Fagan/Bradley, DeLuce, B. V. Raman, etc.).
• Has a built-in atlas with almost 145500 cities in the world, with historical time zone calculations or manual if you wish so. You can either choose from the atlas, or introduce yourself the geographic coordinates and time zone offset of the place of birth.
• Draws the western graphical chart – with birth and transit, and a zoom function – and the table of aspects along the other sections: main astronomical events connected to the birth (season, moon phases and near eclipse), planets, houses and stars positions, natal aspects, Arabic parts, classical dignities (including mutual receptions and scores), elements and qualities (with percentages), Vedic information, and the written report (automatic or written by the user). It also can generate – alternately – the Vedic north style chart with the Vargas (from rashi to D60), with the main important information. 
• Possibility to write and define your own interpretations texts and manage them in the Word Press administration panel giving the visitant the possibility of getting a personal report “on the fly”.
• Transits reports, giving positions, graphic and interpretations for future dates (chosen in a calendar mode).
• Ability to hide/show all the above or not, configure at some extent the layout of the sections (like placing side a side the planets and houses table, or place the aspect graphic in the end of the layout, etc.), the colors of the astrological graphical chart and planets, the buttons style, etc.
• Print feature (in beta test phase).
• Capable of saving and backup the personal texts and/or the settings to files, and import them in a new installation/update for example.
• Despite all the features, it’s very easy to install and to use!

Added features in version 2.6.0.0 - Latest (february 2021)

• Minor bug correction.
• Minor improvements and optimizations.

Added features in version 2.5.0.0

• Implementation of Vedic chart (north style) output option, with Vargas (rashi, and system 2, 3, 6, 7, 8, 9, 10, 12, 16, 20, 24, 30, 40, 45 and 60) for natal and transits.
• Implementation of the birth nakshatra report text interpretation.
• Implementation of showing an introduction text to the solar sign of the user and/or of the ascendant.
• Backup/Restore full configuration capability made easy: with this option the user can export his current settings, preferences and options, along with the own interpretations text reports and language translation or modification to a zip file, and retrieve them later by importing it, so that all the configurations can be restored with just one click. Useful in case of loosing or changing the server.
• Minor bugs correction, like a small visual error on multiple conjunctions in a chart, among other ones.
• Minor improvements and optimizations.

Added features in version 2.4.0.0

• Implementation of a CSS editing mode, using the language of the W3.css javascript library, so the user can define, for example, the appearance of the buttons and tables in the pages, the layout for the output (sections are placed how the user wants), and the colors of the signs, outer ring, planets, etc. of the astrological graphic chart.
• Backup/Restore settings capability: with this option the user can export his current settings to a json file, and retrieve them later by importing it, so that the options that he wishes to be defined by default in the admin main configuration panel can be restored with just one click.
• Minor bugs correction.
• Improved simple printing of the chart results (still on beta test stage however).

Added features in version 2.2.8.0

• Implementation of multilanguage support (a feature many times requested). Now, most of the major and more important texts and strings on the plugin show to the user, can be translated manually by you, without having to resort to the paid Google translator API. The admin panel was not yet translated.
• Insertion of the new glyph of Unfortune or Sickness – along with the Pars Fortuna.
• Now, the transits page, when called not from the major plugin form, automatically asks for the birth details. So, you can implement a birth chart page, and a transit one only.

Added features in version 2.2.7.0

• General code minor fixes.
• Possibility of personalizing the title of the initial form.
• Introduction of the MC (Midheaven) in the table and list of the astrological aspects.
• Implementation of a “Now” button to set the date or time for the current value.

Added features in version 2.2.4.0

• Implementation of about 90 additional Arabic Parts.
• Possibility of hiding the outer planets (Uranus, Neptune and Pluto) in the results.
• Small fix in the Libra sign glyph and in the aspects colors.
• Implementation of visual options for the natal chart.
  • Choose between showing only the Radix chart or also the Transits one.
  • Choose a black and white chart if you wish (instead of a colored one).
  • Control de scale size of the glyphs.

Added features in version 2.2.0.0

• Implementation of a complete Transits calendar with customizable written reports for any date.
• One minor bug fix regarding some astrological points math and formula.
• Improvements and fixes regarding the essential Dignities tables. Now, you have the option to customize your own custom dignities table (besides the classical ones of Ptolemy and Dorotheus) and have the choice between using 2 different score systems (basic and with m.r.). Mutual receptions were implemented.
• Show (optional) a small but accurate Astronomical events calendar, of the seasons and eclipses (lunar and solar) for the year of birth along with all the four moon phases for that month.
• Improvement of the admin interface.
• The user data is now stored in cookies – if he allows it – and loaded when he enters the website (only if cookies are enabled in the web browser and the visit is no longer than 7 days apart).

Added features in version 2.1.2.0

• Complete control on showing/hide all the report section.
• More visible background for the zoom.
• Implementation of solutions for users who don’t have the most basic permissions (like some php ini default values).
• Upon activation of license, possibility of automatic updates via your control panel without having to download from Tetrabyblos website.
• Ability to use some parameters in the shortcode plugin.

Added features in version 1.3

• Important feature: Possibility for making a simple zip backup of your own interpretations texts – and download it – and restore it automatically from the zip. This feature is useful and indispensable, since a mere upgrade or misconfiguration could make you lose all your reports and/or drafts. You can, also, always restore the default Max Heindel texts (zipped texts are inside the Documentation zip).
• Select essential dignities table system between Ptolemy and Dorotheus.
• Calculate the essential dignities scores (according to the table chosen).
• Capability of uploading custom images for the signs and planets, to be used in the text reports, with the size you define, if wanted. You can chose not to show any image, show only the ascendant sign customized image, the ascendant and the most dignified body, or all the bodies.

Added features in version 1.2:

• Zoom natal chart.
• Scale form to fit better to the template design.
• Enable/disable advanced features to the users (giving the option to choose the house system and zodiac type).
• Enable/disable soft astrological aspects (Semisquare, Quintile, Sesquisquare, Biquintile, Parallel and Cont. Parallel).
• Show/hide bodies/points like Chiron, Lilith, Rahu and Ketu, Syzygy or Pars Fortuna or the solar sign glyph from the aspects chart.
• Show/hide Vedic report.
• Max Heindel’s interpretations report as default is included.

Version 1.1, computes the following Basic parameters:

• Ecliptic tropical/sidereal longitude of the major celestial bodies/points (Sun to Pluto, Lilith, ascendant. Mid-heaven, moon’s nodes and the eight major Arabic Parts), about 60 important stars in astrology and the cusps of the houses – both for radix (birth chart) and current transit.
• Enumerates the Dignities (including Terms and Faces), Elements and Qualities (with percentages) of the planets and the most important aspects between them.
• Draws the graphical chart – with birth and transit – and the table of aspects.
• Gives the primary astrological Vedic – Jyotisha – information for that chart: Nakshatram, Yoga, Karana, Thiti, Pada, Rasi, madhya/sandhi houses, and Dasa periods (birth and current). By default, uses the Lahiri Ayanamsa when the tropical chart is requested for mutual comparison of both systems. Coordinates both of the Rasi and the Nakshatra are given, with Pada and house position.
• Has 13 different House systems at your disposal (like Placidus, Porphyrius, Equal, Regiomontanus, Campanus, Morinus, Koch, Topocentric, etc.)
• Has 13 different reference Ayanamsas (like Lahiri, Fagan/Bradley, DeLuce, B. V. Raman, etc.).
• Has a built-in atlas with almost 145500 cities in the world, with historical time zone calculations or manual if you wish so. You can either choose from the atlas, or introduce yourself the geographic coordinates and time zone offset of the place of birth.
• Accurate astronomical calculations for the period of about 6000 years (from about 3000 B.C. to 3000 A.C.).
• Besides these characteristics, you have the possibility of write and define your own interpretations texts and manage them in the Word Press administration panel giving the visitant the possibility of getting a personal report “on the fly”.

Future versions will consolidate primarily the Vedic calculations (mainly
regarding the Shadbala, or strength of the planets, which is being carefully
tested before release given the complexity and, above all, the variants on the
subject). It will also try to include subjects and functionalities like listing
accidental dignities, allow paid services (woocommerce integration), PDF chart
generation among other interesting features suggested all the time by our
current users – these precious ideas are growing! Thanks for the support and
feedback.

Just Word Press. The script does not depends on third party REST API or executable permissions.

All the documentation is very well explained in both our video tutorial (installation and usage) and in the PDF documents included in the zipped file of the plugin.