new-usemame/Calibre-Web-NextGen v4.0.72

v4.0.72 — Kobo Android app compatibility

on GitHub

For Kobo Android app users: the official Kobo Android app should now sync reliably against this build. Four small protocol gaps that Kobo devices tolerated but the Android app rejected are now closed.

What's fixed:

• Series field always present on book metadata — the Android app refused entries without it. Books not in a series get Series: {} and sync normally.
• DRM type always declared on book metadata — the Android app rejected entries with DrmType omitted. Now always emitted as "DrmType": "None".
• Android-specific download endpoint — get_download_url_for_book switches to the redirect-download path when the request carries x-kobo-deviceos: Android. Kobo devices keep the original direct-download path.
• Cover image URL templates — capitalized {Width} / {Height} placeholders so the Android app's case-sensitive template substitution resolves them. Cover images that previously appeared broken on the Android app should now display.

Existing Kobo device sync is unaffected — all four changes are additive or pin behavior the Android app needs.

Pull the image:

docker pull ghcr.io/new-usemame/calibre-web-nextgen:v4.0.72

5 regression tests in tests/unit/test_kobo_android_app_compat.py pin the four behaviors plus the device-OS gate logic.

Thanks @shavitmichael for the original patch (CWA #1343).