Backing up your blog contents is very very important. Why? Because your Blogger/blogspot blog can be running smoothly today and yet it also can all of a sudden disappear, without warning. It happened before and will happen again in the future. Playing by the rules doesn’t make you immune either because mistakes do happen.
So be prepared, and if you haven’t yet backed up your blog, then do it now.
Using blog feeds
First of all you need to ensure the feed contains complete post contents (including images). Go to Dashboard > Settings > Other > Site Feed, and select FULL in the "Allow Blog Feed" dropdown menu.
Posts
Go to this URL and save page as "Webpage, Complete" in your PC: view sourceprint?
http://YOURBLOGNAME.blogspot.com/feeds/posts/default?max-results=500
Comments
Go to this URL and save page as "Webpage, Complete" in your PC: view sourceprint?
http://YOURBLOGNAME.blogspot.com/feeds/comments/default?max-results=200
A posts feed retrieves only up to 500 posts and a comments feed up to 200 comments. If your blog has more posts or comments, you need to get more than one feed. Add a start-index query in the URL to specify the starting point of each subsequent feeds, like this: view sourceprint?
http://YOURBLOGNAME.blogspot.com/feeds/posts/default?start-index=501&max-results=500
The same applies to comments feed.
If you redirect your blog feed, then append &redirect=false at the end of the URL.
Using export feature Posts and comments
Go to Dashboard > Settings > Other > Blog Tools and click "Export Blog". The blog posts and comments (in XML file) will be downloaded to your PC.
http://YOURBLOGNAME.blogspot.com/feeds/comments/default?max-results=200
A posts feed retrieves only up to 500 posts and a comments feed up to 200 comments. If your blog has more posts or comments, you need to get more than one feed. Add a start-index query in the URL to specify the starting point of each subsequent feeds, like this: view sourceprint?
http://YOURBLOGNAME.blogspot.com/feeds/posts/default?start-index=501&max-results=500
The same applies to comments feed.
If you redirect your blog feed, then append &redirect=false at the end of the URL.
Using export feature Posts and comments
Go to Dashboard > Settings > Other > Blog Tools and click "Export Blog". The blog posts and comments (in XML file) will be downloaded to your PC.
To import it, go to the same page: Dashboard > Settings > Other > Blog Tools, then click "Import Blog".
Using Email feature
Using Email feature
Using this method lets Blogger send you an email every time a post or comment is published on your blog. Posts
Go to Dashboard > Settings > Basics > Mobile and Email > Email Posts To and enter your email address in the textbox.
Comments
Go to Dashboard > Settings > Mobile and Email > Comment Notification Email and enter your email address in the textbox .
Using Windows Live Writer
If you use Window Live Writer as your post editor, a copy of your post is kept in your PC.
Posts -You can find the posts in My Documents\My Weblog Posts\Recent Posts.
Using Windows Live Writer
If you use Window Live Writer as your post editor, a copy of your post is kept in your PC.
Posts -You can find the posts in My Documents\My Weblog Posts\Recent Posts.
Comments -Not available.
Using Httrack
HTTrack downloads all files into your PC and creates a mirror copy of your blog offline. You can browse the blog as if you were online, posts, comments and all.
HTTrack is available for Windows and Linux. Download it here. Once downloaded use this this instructions to install it in your PC.
Take Blogger blog images backup
Blogger dashboard or admin do not have specific options for images backup. So, for image backup, you can try any of the following practices.
Manage your blog images in your local system. It means, when you upload a new image on your blog, also add one copy of that image in your local backup folder.
Download blogger images from Google Takeout. From Google Takeout, you can download your all Blogger blogs data from the “Blogger” option or download selected blog’s photo album from “Google Photos” option.7. Backup Blogger theme’s gadgets content
Blogger theme backup does not include some gadgets in the backup file. So, for that case the following practice helps to take gadgets (widget) backup.
Create a txt file in your system backup folder. Go to the Blogger dashboard and open the “Layout” setting page. Now, open each gadget one by one and copy its title and content in txt file. That’s it.
You can use this file when restoring your blog using backup. At that time, you can add missing gadgets and its content from this txt file.
Using Httrack
HTTrack downloads all files into your PC and creates a mirror copy of your blog offline. You can browse the blog as if you were online, posts, comments and all.
HTTrack is available for Windows and Linux. Download it here. Once downloaded use this this instructions to install it in your PC.
Take Blogger blog images backup
Blogger dashboard or admin do not have specific options for images backup. So, for image backup, you can try any of the following practices.
Manage your blog images in your local system. It means, when you upload a new image on your blog, also add one copy of that image in your local backup folder.
Download blogger images from Google Takeout. From Google Takeout, you can download your all Blogger blogs data from the “Blogger” option or download selected blog’s photo album from “Google Photos” option.7. Backup Blogger theme’s gadgets content
Blogger theme backup does not include some gadgets in the backup file. So, for that case the following practice helps to take gadgets (widget) backup.
Create a txt file in your system backup folder. Go to the Blogger dashboard and open the “Layout” setting page. Now, open each gadget one by one and copy its title and content in txt file. That’s it.
You can use this file when restoring your blog using backup. At that time, you can add missing gadgets and its content from this txt file.
Big blogs
If you have a big blog Unfortunately you can backup your blog but you can restore ti to WordPress website only because google do not allow you to restore a big blog, this is a 10 years bug i believe the google do not want to fix this bug - the bug is a Captiva confirm panel - if you see the Captiva forget the blog restore if you have a big blog you have 2 solutions
1) you can restore it in a new WordPress domain via a blogger2WordPress migration plugin
2) you can restore it on blger blogpost by copy paste one by one all articles posts and one by one copy paste the pages.
If you have a big blog is very good idea to use the https://www.httrack.com/ free tool to backup your blog in your HDD / SDD of Flash drive disk in your home
Reblog
http://www.bloggersentral.com/2009/08/how-to-back-up-your-blog.html
https://techpostplus.com/backup-blogger-blog-theme-posts-gadgets-images/
http://www.tothepc.com/archives/10-ways-to-backup-restore-your-blogger-blog/
https://forum.httrack.com/readmsg/29230/22594/index.html
https://richhewlett.com/2014/05/20/backing-up-your-blog-content-using-httrack/
http://www.bloggersentral.com/2009/08/how-to-back-up-your-blog.html
https://techpostplus.com/backup-blogger-blog-theme-posts-gadgets-images/
http://www.tothepc.com/archives/10-ways-to-backup-restore-your-blogger-blog/
https://forum.httrack.com/readmsg/29230/22594/index.html
https://richhewlett.com/2014/05/20/backing-up-your-blog-content-using-httrack/