The EPUB File Reader tool for readers.

With this tool, you can read epub file type on Windows OS.
As you know already, the epub file type is:
EPUB is an e-book file format that uses the ".epub" file extension. The term is short for electronic publication and is sometimes styled ePub. EPUB is supported by many e-readers, and compatible software is available for most smartphones, tablets, and computers. EPUB is a technical standard published by the International Digital Publishing Forum (IDPF). It became an official standard of the IDPF in September 2007, superseding the older Open eBook standard.[2] The Book Industry Study Group endorses EPUB 3 as the format of choice for packaging content and has stated that the global book publishing industry should rally around a single standard.[3], see Wikipedia.

About this tool, you can read and download it on the official website:
EPUB File Reader is a free EPUB files viewer, can help you to open and read ePub e-books and documents. The software interface consists of two parts, the left will show document chapter directory, the right is a browser to show document content. This software is easy to use very much, it is a freeware and completely free to use.

The SmartDraw best tool to build diagrams.

This tool named SmartDraw is the best tool to build diagrams.
At 9 JULY 2019, this tool has been updated with new features:

• Sub-Charts and Processes; 
• OneDrive for Business; 
• easier Organization with drag and drop files and folders into other folders right on the template dialog;
• edit the name of a file using the click in the upper right corner of your diagram;
• New Modern Themes;
• Floor Plans features like set angles between walls and lines and show distances of windows and doors from the corners of a space;
• You can license your entire organization for one annual price;
• The SmartDraw Development Platform comes with Open API;
• and much more features;

This tool can use the online edition of SmartDraw on any computer or tablet or you can download it for the Windows operating system.
The online tool works well after I sign up with my mail.
The output can be export like Office, VSDX, VSD, PDF, SVG, and PNG file formats or can be share like link, mail or embed.
The output PNG file has filled with the trial copyright, but you can download an SVG file and use another editor to have a good output.
The price of this can start with from $9.95 (Per month, billed annually) or a one-time payment.
The Windows version stuck into Wize Installation Wizard window.
The official webpage can be found here.
Let's see a video tutorial from the official YouTube channel.

Social media image sizes in development.

A good approach to social media development is the study of international web sites and the way they are built.
Today I will present you a collection of information that will complete the design palette and the graphics: Social media image sizes.
Here's how these are shown in the following tables:

Cover photo/header image:

Social site	Image size
Twitter	1500px x 500px
Facebook	820px x 312px
Pinterest	222px x 150px (Board Cover image)
LinkedIn	1584px x 396px (Background or Cover image)
LinkedIn	1536px x 768px (Business Cover image)
YouTube	Display varies by device; 2560px x 1440px on desktop
Tumblr	3000px x 1055px
Medium	1500px x 750px

The profile size:

Social site	Image size
Twitter profile picture size	400px x 400px
Facebook profile picture size	800px x 800px (recommended) 170px x 170px (display size)
Instagram profile picture size	110px x 110px (min.)
Pinterest profile picture size	165px X 165px
LinkedIn profile picture size	400px x 400px
YouTube profile picture size	800px x 800px**
Medium profile picture size	60px x 60px (publication avatar) 72px x 600px (max.) (logo image)
Tumblr profile picture size	128px x 128px

Shared image sizes:

Social site	Image size
900px x 450px
Facebook	1200px x 630px
Instagram	1080px x 1080px
Pinterest	236px x scaled height (Expanded Pin)
LinkedIn	1200px x 628px (Personal Profile)
LinkedIn	1200px x 1200px (Company Page)
YouTube	16:9 aspect ratio (Video); to qualify for HD: 3840px x 2160px
Medium	1000px wide by any height
Tumblr	540px x 810px

Shared link graphic sizes

Social site	Image size
Twitter	800px x 320px
Facebook	1200px x 630px
Instagram	110px x 110px (Photo Thumbnails)
Pinterest	735px x 1102px (Pin Preview); 600px x 600px (Board Display)
LinkedIn	180px x 110px
YouTube	1280px x 720px (Custom Video Thumbnail)
Medium	Will pull story header or profile image

My freelancer offer ...

Now I'm working with an project , but I can make my free time for smaller or longer projects ...
I can come up with a $ 5 / day offer for graphics and drawing production:

• the formats obtained with the free software;
• Blender 3D versions 2.79 and 2.8 for 3D graphics;
• Inkscape, Gimp, and Krita for 2D graphics;

Note: for painting and drawing other than, the $ 5 / day offer, the materials used (color watercolor or acrylic, quality paper or canvas, frames) for the final product will also be calculated.
Email for contact: catafest@yahoo.com 

See some of my work search me on web with my name Cătălin George Feștilă or nicknames catafest and mythcat:

• http://festila-george-catalin.daportfolio.com 
• https://www.deviantart.com/catafest/gallery/

Krita 4.2.2 : Programming with python.

The Krita application is written in C++ using an application framework called Qt5.
You can use python to create scripts for Krita software.
You can use Tools - Script - Scripter from the main menu to write your python script.
I don't use often this python module, but today I created this script.
The script creates a new document with size 512x512 named Python test document.
After that create a duplicate of the layer named Background.
The new layer is named the new Layer duplicate.

from krita import *
from  krita import Krita

print(dir(krita))
print(help(Krita))

d = Krita.instance().createDocument(512, 512, "Python test document", "RGBA", "U8", "", 120.0)
Krita.instance().activeWindow().addView(d)

print(dir(d))
print(Krita.instance().filters())

node_name = 'Background'
node = d.nodeByName(node_name)
print(node.name())
print(dir(node))

d_n = node.duplicate()
print(dir(d_n))

d_n.setName("new Layer duplicate")
print(d_n.name())
root_node = d.rootNode()
print(help(root_node.addChildNode))
root_node.addChildNode(d_n, node)

Blender 3D : Create a Printed Circuit Board with Blender 2.80 released Candidate

This is a simple video tutorial about how to create a Printed Circuit Board with Blender 2.80 released Candidate:

News : Blender 2.80 Release Countdown.

The development team comes tells us about the new Blender 2.80 Release Candidate on the official webpage:
A Release Candidate is the final step before the release. Blender has been built and packaged just like the official release, and is available for a short period of testing. Please download it and give it a good try. If things go as expected, the final release will be one week after.
The Blender 3D team want to test it and report any issue:
The massive Blender 2.80 update is around the corner! Download and test this build and report any issue on developer.blender.org
After download you can see a message about supporting the Blender software: Thank you for downloading Blender! Next step: Support Blender Development Join the new Development Fund for only $6 / month and ensure the future of Blender.
I test it with the last blender file I worked ( a raspberry work, see http://festila-george-catalin.daportfolio.com).
This release works great.
The BlenderDiplom youtube channel comes with a video introduction about this new release:

News : NeoAxis Engine 2019.2.4 Released.

The NeaAxis Engine has a fast development team and released a new version 2019.2.4 version.
From the 16 June 2019 up to 11 July 2019 they come with many features. The following features have been added and can be read at the official website see the team announcement :

• Significant optimizations of the rendering pipeline. 
• Rendering is multi-threaded computed now, automatic GPU instancing has been added. 
• Import content tool enhancements have been improved. 
• Easy import from library Quixel Megascans is now supported. 
• The ability to use the engine widget in Windows Forms and WPF applications has been added. Billboard rendering has been improved. 
• Now they are drawn faster and support shadows. 
• A high-quality anti-aliasing mode has been added. Supersampling anti-aliasing (SSAA). Documentation has been improved. Class descriptions have been added.

They come with a roadmap on the official website to see how the development works.
I want to see tutorials and video tutorial to follow my issues with C# but I expected to see it in the future.

Krita 4.2.2 : Install the G'MIC on Krita software.

The G'MIC tool can be installed on Krita version 4.2.2 and older versions.
This tool is an opensource filter framework.
The G'MIC is open-source software distributed under the CeCILL free software licenses (LGPL-like and/or GPL-compatible).
You can download it from here.
Download it, unzip and place it somewhere you can find it.
Open the Krita software and use Settings - Configure Krita - G’Mic plugin and set G’MIC to the file path there.
The official YouTube channel has many video tutorials with this tool and GIMP software.
This is an old video tutorial with one old version of Krita:

Blender 3D : The mirror sunglasses material.

This is a simple tutorial about how to create a mirror sunglasses material with Blender 2.8 version. First, create an object and add new material. Using the Shift + A keys you will need this into Shading tab.

GeoGebra tool.

The GeoGebra tool is dynamic mathematics software for all levels of education that brings together geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package.
GeoGebra has become the leading provider of dynamic mathematics software, supporting science, technology, engineering and mathematics (STEM) education and innovations in teaching and learning worldwide.
You can find over 1 million free activities, simulations, exercises, lessons, and games for math and science!
This online tool can also be used offline with GeoGebra applications for iOS, Android, Windows, Mac, Chromebook, and Linux.
Read more at the official website.
This is a video tutorial about GeoGebra 3D with Augmented Reality (Quick Modeling Demo) from the official YouTube:

Google hidden tools and features.

This tutorial is about Google hidden tools and features.
Many of the tools and online games are hidden in the Google search area.
Open your browser and search this: 10 value spinner.
This will show a spinner and you can test it.
You can find into the bottom of this online tool many features: Flip a coin, Color picker, Rol a die, Metronome, Meditate and Calculator.
This is a screenshot with the 10 values Spinner tool.

The Kerkythea software.

The development team of the Kerkythea software comes with this intro:
Kerkythea is a freeware software that can produce high quality renders without spending a cent on software licensing. Kerkythea is using physically accurate materials and lights, aiming for the best quality rendering in the most efficient timeframe, with target to simplify the task of quality rendering by providing the necessary tools to automate scene setup, such as staging using the GL real-time viewer, material editor, general/render settings, editors, etc., under a common interface
This software is available for all major platforms Windows, Linux, and MacOSX.
The software supports the following 3D File Formats: 3DS, OBJ, XML (Native KT format) and KZX (Zipped KT XML format).
You can find many videos about Kerkythea created by Hipolito Rodrigues.
You can download it from the official webpage.
The software is easy to use.
Open your model with File - Open and use Render - Start to render the output.
The final Rendered Image can change it with some colors settings: Tone Map, Exposure, Gamma, Dark, and Bright.
The Sun & Sky Wizard tool lets you fix it by Location, Zone, Year, Month, Day and Hour, Minute, Second.
The last setting of this tool is Sky Type.
The model object can be translated and rotated it.
Each object can have materials with many basic features and can be imported just like mat.zip type file.
I found some bugs:

1. the texture preview did not follow the changes by size;
2. the texture working area is hard to use;
3. the tools for animation and brush is unfinished;
4. the render network tool is unfinished;

In conclusion, this software is 88% completed by the development team.