Kovid Goyal 2c5490a061
PDF Output: Fix background image + text not rendering correctly if the same background image is used with different text multiple times. Fixes #2035338 [conversion from epub to pdf - all chapter titles are the same as the first chapter](https://bugs.launchpad.net/calibre/+bug/2035338)
Chromium renders this as the background image with a soft mask. The
background image is duplicated, however calibre's image dedup
cannot work as the softmask is part of the image dictionary and dedup
works by replacing references to the image dictionary.

There is a similar breakage which will happen if there are duplicated
soft masks as the dedup code does not currently update the softmask
references.
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calibre

calibre is an e-book manager. It can view, convert, edit and catalog e-books in all of the major e-book formats. It can also talk to e-book reader devices. It can go out to the internet and fetch metadata for your books. It can download newspapers and convert them into e-books for convenient reading. It is cross platform, running on Linux, Windows and macOS.

For more information, see the calibre About page.

Build Status

Screenshots

Screenshots page

Usage

See the User Manual.

Development

Setting up a development environment for calibre.

A tarball of the source code for the current calibre release.

Bugs

Bug reports and feature requests should be made in the calibre bug tracker at Launchpad. GitHub is only used for code hosting and pull requests.

Support calibre

calibre is a result of the efforts of many volunteers from all over the world. If you find it useful, please consider contributing to support its development. Donate to support calibre development.

Building calibre binaries

See Build instructions for instructions on how to build the calibre binaries and installers for all the platforms calibre supports.

calibre package versions in various repositories

Packaging Status

Description
The official source code repository for the calibre ebook manager
Readme GPL-3.0 360 MiB
Languages
Python 92.6%
C 3.3%
C++ 3.1%
HTML 0.4%
Shell 0.2%
Other 0.2%