nicoverbruggen/kobalt v1.0-beta.2

Kobalt v1.0-beta.2

on GitHub

What's changed

• Fixed opening and appearance previews for EPUBs whose structural CSS selectors require styles to be recalculated after parsing. Publisher image spacing and centered text are preserved.

• Fixed opening EPUBs with repeated identical manifest items. Conflicting duplicate IDs remain unsupported.

• Fixed opening EPUBs with standard IDPF-obfuscated embedded TrueType or OpenType fonts.

• Added evenly spaced line-spacing slider marks with snapping at 100%, 110%, 120%, 130%, 140%, 150%, 175%, 200%, 250% and 300%. Plus and minus still adjust spacing by one percentage point.

• Fixed line spacing being applied twice. 150% now means 1.5 times the font size. Existing book settings are converted to preserve their approximate spacing, with 122% becoming 150% and a maximum of 300%.

• Fixed left alignment and justification moving publisher-centered text to the left.

• Fixed reversed landscape touch targets on affected Clara devices with firmware 4, using NickelRotate’s coordinate correction.

• Fixed opening and saved chapter lookup for sideloaded filenames containing #, ? or literal percent escapes on firmware 4. If files fail to open, an explanation is logged.

• Fixed opening DRM-free local EPUBs regardless of their folder, including hidden folders, SD storage, Dropbox, Google Drive and third-party sync services. Protected books still open in the built-in reader.

• Fixed missing Chinese, Japanese, Korean and other bundled fallback characters in chapter titles and interface controls. CJK fallback text and CFF font previews use Kobalt’s font renderer to avoid crashes in the firmware font driver.

• Load private interface fallback fonts when text first needs them, including the CJK collection. This is more memory efficient.

• Fixed Kobalt remaining inactive when Nickel's initialization callback was missed.

Installation

Download the package for your Kobo firmware:

• Kobalt-qt5.zip for firmware 4.38 and later.

Manual instructions

1. Connect your Kobo over USB and extract the ZIP on your computer. Show hidden files to see .adds and .kobo.
2. Copy .adds to the root of the Kobo drive. Merge folders and replace matching package files. Keep other apps, settings and reading data.
3. Then copy .kobo to the same drive root, merging folders again.
4. Eject the Kobo safely, disconnect USB and let the update install.

Copy both folders in that order. Leave the .tgz file inside .kobo compressed.

Checksums · Build information

Source code and dependencies