Is there an online service for drawing beautiful diagrams, instructions for site articles?

Question

Design

There is a site (blog) on ​​which articles, news and so on are published.
In many posts, it is necessary to draw beautiful diagrams, instructions for users. I'm not much of a designer, and I don't want to bother with Photoshop and other programs. (So ​​that you can imagine, for example! I am writing an article about tenses in English and I need beautiful rectangles in which I would insert them, point to examples with arrows, and so on. As a result, I got a large and beautiful diagram (instruction, diagram, I don’t know how to finally call it :))))
Are there online services with ready-made themes and a set of objects in which one could create beautiful schemes -> save to a picture (or, in extreme cases, to pdf) for further insertion into the site.
Drawing in Photoshop will be long and too tiring, drawing in editors is very collective farm.

Answer 1

I use it all the time: https://www.edrawsoft.com/freemind.php

Answer 2

I use this.
https://www.lucidchart.com
It's fun to see multiple people drawing in parallel.
Very handy for collaboration.
If we are just talking about drawing diagrams / diagrams, then the most banal Microsoft Office / LibreOffie / OpenOffice has what you need for this. Save it as an image and paste it on your site.

Answer 3

I use draw.io - convenient and concise

Answer 4

14 services for creating infographics