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22 votes

How can I reduce the resolution of images in an epub or mobi file?

Calibre already offers this functionality without any plugin. It's part of the ebook editor that installs with Calibre. The editor will only edit files in the epub or azw3 format though. You can ...
  • 321
8 votes
Accepted

Can I float an image to the top or the bottom of the screen?

You can't float to top or bottom. But you can use the CSS break-before property to ensure a page-break before your pictures. Obviously, this will put pictures at the top of the page.
  • 143
5 votes
Accepted

How can I reduce the resolution of images in an epub or mobi file?

I had a similar situation: a 134 MB .mobi that I wanted to shrink. Here's how I reduced the file size to 26 MB. The key to this approach is that an .epub is actually just a zipped web page with ...
5 votes

How can I reduce the resolution of images in an epub or mobi file?

Note: I intended to leave this as a comment for @mosh but didn't have the necessary rep. This is my own personal solution based on the solution he outlined. This will recursively scan a specified ...
5 votes
Accepted

Cover image size by ebook format

This depends on where you are publishing your e-book, and is subject to change. With Kindle Direct Publishing, they require a minimum of 625 pixels on the shortest side and a minimum of 1000 pixels on ...
5 votes
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How to prevent Calibre replacing my cover image

Calibre has had an option to insert a cover long before it offered editing some ebook formats. That option comes with additional utilities of finding a fitting cover using some internet services. If ...
  • 7,631
4 votes
Accepted

Stretching an image to fit the screen

unfortunately you can't make width:100%; in mobi files. Amazon just strip that away. You can try to set min-width:100%; instead but this is little different in behave so test are needed. More about ...
  • 350
4 votes

How can I reduce the resolution of images in an epub or mobi file?

bash script to for bulk compressing images in big.epub to small.epub on Windows7 or Linux. You need to install cygwin on windows for (bash, unzip, zip, find, imagemagick). #!/usr/bin/bash USAGE="...
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3 votes

How can I reduce the resolution of images in an epub or mobi file?

Here is a Python script I use to automate reducing the size of epub books: https://github.com/murrple-1/epub-shrink Example usage: $ python epub-shrink/app.py input_file.epub output_file.epub --jpeg-...
  • 131
3 votes

Can I use a Youtube still image in my ebook

So, I am not a lawyer, etc. The basics of copyright law, though, are fairly straightforward: If you don't own the image/text/song/whatever, you can't use it, unless there's an explicit license in ...
  • 4,628
3 votes
Accepted

Can I use a Youtube still image in my ebook

This answer does not present any legal advice. In fact your post contains two questions. Speaking of the youtube license part you should definetly add information about the country you want to publish ...
  • 617
3 votes
Accepted

What is the best way to read manga on Kindle?

The fastest and simplest way is to use a comic book archive format. If you already have the image files, make sure that they are named with the correct alphabetical and numerical order (I.E. cover....
  • 6,076
2 votes

How can I reduce the resolution of images in an epub or mobi file?

The short answer is that with few exceptions you should NEVER need to scale down .mobi files because Amazon.com will do it for you. I think 5.5 MB is a reasonable file size for an epub file. I don't ...
2 votes

How can I reduce the resolution of images in an epub or mobi file?

Just install and use Send to PC official Kindle app for transferring files over the air to your device https://www.amazon.com/gp/sendtokindle/pc
2 votes
Accepted

is there any way to keep captions of the images always with the image?

Ultimately, it depends on which ereader devices you want to support. Unless you are making a fixed layout book, the only method that will work 100% of the time is to make the caption a part of the ...
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2 votes
Accepted

How to add a background image to each page of mobi or epub books?

You could try with standard CSS rules and see if the results work for you. Example for the background: body { background-image: url(../Images/image.jpg); } You can also try other background ...
  • 6,076
2 votes

How to avoid image distortion when convert my .epub to .mobi

Here is the css I use for my kindle images: div.image-container { width: 95%; margin-left: auto; margin-right: auto; } div.image-container img { width: 100%; display: inline; } The goal I ...
1 vote
Accepted

Kindle vs Hyperlinked Images

(I assume you are talking about an internal, not external link. Is that right?) Here are some helpful clues and semi-educated guesses. The epub3 spec doesn't say anything about whether reading ...
1 vote

Downscaled screenshots of HTML tables look blurry. Why?

Sekhemty already gave a good answer. I just wanted to throw out further thoughts. First, issues of rendering HTML tables and images are less severe on tablets with bigger screens. You can put a note ...
1 vote

Downscaled screenshots of HTML tables look blurry. Why?

I don't think that you can really "fix" this; representing text with a raster image and downscaling it means that it will be displayed with far less pixels that are required to provide a clean and ...
  • 6,076
1 vote

is there any way to keep captions of the images always with the image?

Here's a practical suggestion. Download or buy one of the epub files by Oreilly publishers (or some other technical publishers). (They may even have some free downloads available). Then rename the ....
1 vote

How to make images scale with text size on an Amazon Kindle?

First, I don't know the specifics of using Calibre for images, but here is the css code I use to make images work in epubs which will be converted by kindlegen to Kindle. https://ebooks....
1 vote

Centering images in ePub made with Apple Pages

The right alignment results from the margin-left:16.5528% in the span surrounding the image. I am not sure if you can change that in Apple Pages. I would experiment with Position (at the bottom of ...
  • 7,631
1 vote

How to skip those hyphens while searching in acrobat

If I understand your question correctly, you are asking for a way to automatically double-check an OCR conversion from image to text. I'm afraid that is not possible: checking would require conversion ...
  • 4,628
1 vote

What is the best way to read manga on Kindle?

The easiest solution what I found is Kindle Comic Converter, which also cuts the edges. I used it several times, and worked fine (didn't cut into the text, etc.)
1 vote
Accepted

Interior Image requirements for non-Kindle distributors & devices with retina displays?

Egad, I'm sorry that no one answered this very important question. I shall try to answer it by myself with what I've learned over the past week. I'm still testing and will add more information as ...
1 vote

Stretching an image to fit the screen

This is the correct answer (trust me on this -- I took several days to figure it out). Kindle's formatting guide specifies that you should include as high a resolution file as you possibly can. Then,...
1 vote

Stretching an image to fit the screen

I am on linux, so I use the calibre convert-ebook command-line tool to convert to open-ebook format which is just a directory with the files in. ebook-convert ebook.mobi ebook_files I see this ...
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