readium/kotlin-toolkit

Issues somebody may already be working on are listed last. List everything by date

• Paragraph indent makes paragraph-leading links untappable (bundled ReadiumCSS still has the `p:first-letter` rule removed in readium/css#222)

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  Difficulty 2/5 1-3 hours Newbie friendliness 78/100

  readium/kotlin-toolkit#846 · Opened Nov 4, 2026

• EPUB navigator never becomes Ready (and never reports a location) when go() is called before the initial resource has loaded

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  Difficulty 3/5 1-2 days Newbie friendliness 72/100

  readium/kotlin-toolkit#843 · Opened Oct 22, 2026

• EPUB navigator: `RectF.adjustedToViewport()` shifts `top` by the page padding but not `bottom`, giving decoration/selection rects a wrong (even negative) height

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  Difficulty 2/5 1-3 hours Newbie friendliness 80/100

  readium/kotlin-toolkit#837 · Opened Oct 3, 2026

• Allow apps to provide their own secure storage for licenses and passphrases

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  readium/kotlin-toolkit#836 · 3 comments · 1 reaction · Opened Oct 2, 2026

• App crash: `IllegalStateException: zip file closed` from `FileZipContainer.Entry.read` when WebView reads a resource after the publication is closed

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  Difficulty 4/5 3-5 days Newbie friendliness 57/100

  readium/kotlin-toolkit#835 · Opened Oct 2, 2026

• New Web navigators: no extension point for the WebView (JavaScript interfaces, evaluateJavascript, targetElement, firstVisibleElementLocator)

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  readium/kotlin-toolkit#830 · 2 comments · Opened Aug 28, 2026

• Compose-only PDF navigator

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  readium/kotlin-toolkit#824 · 4 comments · 9 reactions · Opened Jul 29, 2026

• Highlight and Decoration API Support for PDF Publications

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  readium/kotlin-toolkit#823 · 2 comments · Opened Jul 23, 2026

• Pdfium adapter: currentLocator is one page ahead of the visible page (page-index off-by-one in PdfiumDocumentFragment)

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  Difficulty 2/5 1-3 hours Newbie friendliness 68/100

  readium/kotlin-toolkit#811 · 3 comments · Opened Jul 11, 2026

• EPUB reader shows net::ERR_FAILED on https://readium/publication/... after app was unused for a long time

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#784 · Opened May 5, 2026

• Fixed-layout EPUB: Images disappear when using height: 100% or max-height: 100%

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  readium/kotlin-toolkit#769 · 4 comments · Opened Apr 15, 2026

• Invalid utterance locator value after calling TtsNavigator.go

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#759 · Opened Feb 23, 2026

• Feature: Get current voice from the TTS navigator

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  Difficulty 3/5 1-2 days Newbie friendliness 42/100

  readium/kotlin-toolkit#757 · Opened Feb 20, 2026

• Tap to zoom images

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  readium/kotlin-toolkit#756 · 3 comments · 4 reactions · Opened Feb 17, 2026

• Text selection issues on some pages in ReflowableWebRendition

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  Difficulty 3/5 1-2 days Newbie friendliness 52/100

  readium/kotlin-toolkit#746 · 7 comments · Opened Jan 30, 2026

• Stream RWPM heads all xhtml files on load.

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  readium/kotlin-toolkit#735 · 8 comments · Opened Jan 9, 2026

• EPUB conformance profile ignored in WebPub manifests

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#718 · 1 comment · Opened Oct 14, 2025

• Issue while open json file

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  readium/kotlin-toolkit#706 · Opened Aug 27, 2025

• [Feature request] Improve UX Consistency in Spine Navigation

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  Difficulty 5/5 Over a week Newbie friendliness 30/100

  readium/kotlin-toolkit#703 · 1 comment · 1 reaction · Opened Aug 18, 2025

• Text overlap issue in EPUB bullet-like lists (Readium 3.1.1)

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#691 · 2 comments · Opened Jul 3, 2025

• White screen display for PDF book.

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  readium/kotlin-toolkit#674 · 3 comments · Opened May 28, 2025

• [Bug] Page flickers randomly when playing the TTS

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#647 · 10 comments · Opened Apr 22, 2025

• [Feature request] Media Overlays

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#600 · 3 comments · Opened Dec 12, 2024

• Move PDF support on Android to the new Jetpack library

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  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  readium/kotlin-toolkit#649 · 4 comments · 2 reactions · Opened Oct 1, 2024

• [Bug] Cannot access a navigation feed that contains a URL encoded ":"

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  readium/kotlin-toolkit#548 · 4 comments · Opened Jul 20, 2024

• [Bug] TTS bugs

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  Difficulty 4/5 3-5 days Newbie friendliness 36/100

  readium/kotlin-toolkit#537 · Opened Jun 15, 2024

• [Bug] Incorrect operation of footnotes

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#535 · 1 comment · Opened Jun 14, 2024

• Epub decorators are not accessible

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  accessibility

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#352 · 9 comments · 1 reaction · Opened May 8, 2023

• Navigation to search result take a long time.

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  Difficulty 3/5 1-2 days Newbie friendliness 32/100

  readium/kotlin-toolkit#344 · 1 comment · Opened Mar 29, 2023

• Epub Highlight text empty space.

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#335 · 4 comments · Opened Feb 7, 2023

• EPUB navigator settles to a different position than the one requested with `go()`.

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  readium/kotlin-toolkit#320 · 2 comments · Opened Jan 6, 2023

• Support for EPUB web (local) storage

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  readium/kotlin-toolkit#266 · Opened Aug 23, 2022

• EPUB navigator crashes or hangs with really large resources

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#122 · 3 comments · Opened May 6, 2022

• Navigator: Slow rendition with EPUB containing large resources

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#32 · 5 reactions · Opened Oct 22, 2021

• `pageList` and other EPUB collections must be serialized as JSON "compact collections"

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  readium/kotlin-toolkit#185 · Opened Jul 22, 2021

• Conflict on libc++_shared.so between liblcp and PDFiumAndroid

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  blocked external help wanted

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#29 · 15 comments · Opened May 18, 2020

• Decryption of license user data (email, name) with user key (not content key)

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  Difficulty 4/5 3-5 days Newbie friendliness 28/100

  readium/kotlin-toolkit#205 · 6 comments · Opened Dec 1, 2019

• Implement navigator.epubreadingsystem

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  Difficulty 5/5 Over a week Newbie friendliness 20/100

  readium/kotlin-toolkit#222 · 4 comments · Opened Apr 24, 2019

• Support search in OPDS

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  readium/kotlin-toolkit#213 · 3 comments · Opened Jul 2, 2018

• Consider using Android downloadable fonts APIs

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  readium/kotlin-toolkit#224 · 3 comments · Opened Apr 27, 2018

• UnsatisfiedLinkError: liblcp.so fails to load on devices with Xposed/LSPosed framework

  Possibly taken @mickael-menu claimed this 112 days ago. Open

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  readium/kotlin-toolkit#796 · 10 comments · Opened May 26, 2026

• Feature: Support custom fonts from Android res/font resources

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  readium/kotlin-toolkit#786 · Opened May 12, 2026

• Cannot retrieve an expired license from Asset

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  triage

  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  readium/kotlin-toolkit#772 · Opened Apr 17, 2026

• Tts/AudioNavigator.go with locator with progression restarts file.

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  readium/kotlin-toolkit#771 · Opened Apr 16, 2026

• Changing reading preferences does not emit a new Locator

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  readium/kotlin-toolkit#761 · Opened Mar 2, 2026

• cssSelector not available for highlights in EPUBs

  Possibly taken @mickael-menu claimed this 112 days ago. Open

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  Difficulty 3/5 1-2 days Newbie friendliness 25/100

  readium/kotlin-toolkit#704 · 3 comments · Opened Aug 18, 2025

• [Bug] When requesting audio focus to the application, the focus is immediately lost

  Possibly taken @mickael-menu claimed this 112 days ago. Open

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  Difficulty 2/5 1-3 hours Newbie friendliness 25/100

  readium/kotlin-toolkit#615 · 6 comments · Opened Jan 30, 2025

• Google Play Console Notice: Direct links don't work

  Possibly taken @mickael-menu claimed this 112 days ago. Open

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  help wanted

  Difficulty 2/5 1-3 hours Newbie friendliness 20/100

  readium/kotlin-toolkit#426 · 3 comments · Opened Nov 28, 2023

• Proguard minification breaks LicenseValidation

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  documentation needed

  Difficulty 1/5 Under an hour Newbie friendliness 20/100

  readium/kotlin-toolkit#204 · Opened Feb 23, 2021

• HTML <media> elements keep playing after turning pages

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  readium/kotlin-toolkit#145 · Opened Jan 21, 2021