openzim/libzim

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Reference implementation of the ZIM specification

Stars: 256
Forks: 75
Open beginner issues: 0
Indexed issues: 81
Avg merge: 8d 51m
Merged PRs (30d): 4

Dominant language: C++
License: GPL-2.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

81 open issues indexed

Performance of libzim must be tested on a regular basis Open

task

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

openzim/libzim#1134 · Opened Sep 11, 2026
Branch coverage counts phantom exception-unwind edges Open

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

openzim/libzim#1133 · Opened Sep 8, 2026
Latest libzim randomly gets stuck Open

bug

openzim/libzim#1132 · 11 comments · 1 assignee · Opened Sep 7, 2026
Code review: crash/DoS-prone crafted-ZIM parsing, silent search failure, writer inefficiencies Open

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

openzim/libzim#1127 · Opened Sep 1, 2026
Reducing ZIM file size: analysis, tiers, and two RFC PRs Open

question

openzim/libzim#1122 · 1 comment · 1 assignee · Opened Aug 30, 2026
Kiwix search stack: current state, version pin, and options Open

question

openzim/libzim#1121 · 1 comment · 1 assignee · Opened Aug 30, 2026
Resolve "Dot segments" in the reader primitives before running any other content related logic Open

enhancement

openzim/libzim#1115 · 14 comments · 1 assignee · Opened Aug 10, 2026
Forbid to write item with a path including "Dot segments" Open

enhancement

openzim/libzim#1113 · 12 comments · 1 assignee · Opened Aug 10, 2026
When may we stop supporting the old namespace scheme? Open

enhancement question

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

openzim/libzim#1111 · 1 comment · Opened Aug 8, 2026
libzim may pollute the output of an application using it Open

bug enhancement

openzim/libzim#1104 · 8 comments · 1 assignee · Opened Jun 26, 2026
Handle test cases excluded from the writerless build Open

task

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

openzim/libzim#1098 · 1 comment · Opened Jun 8, 2026
Do we want to add support for ZIM edits? Open

enhancement question

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

openzim/libzim#1088 · 1 comment · Opened May 19, 2026
Do we want to add support for resumable Creator? Open

enhancement question

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

openzim/libzim#1087 · 6 comments · Opened May 19, 2026
Clarify behavior when not creating a FT index but still passing titles Open

enhancement question

openzim/libzim#1074 · 1 comment · 1 assignee · Opened Apr 20, 2026
Update documentation around redirects Open

documentation

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

openzim/libzim#1064 · 3 comments · Opened Apr 7, 2026
Ombrella issue to Improve redirects mgmt Open

bug enhancement

openzim/libzim#1062 · 3 comments · 1 assignee · Opened Apr 7, 2026
Writer should allow to create _adhoc_ Xapian Title index entries Open

enhancement

openzim/libzim#1049 · 9 comments · 1 assignee · Opened Mar 18, 2026
Memory usage status Open

cache question

openzim/libzim#1044 · 4 assignees · Opened Feb 11, 2026
Set dirent cache memory globally Open

cache enhancement question

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

openzim/libzim#1039 · Opened Feb 3, 2026
Making the cluster cache global can result in highly increased memory usage for mono-ZIM-file use cases Open

bug cache

openzim/libzim#1037 · 3 comments · 1 assignee · Opened Jan 31, 2026
Consider introducing an item data cache Open

cache

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

openzim/libzim#1035 · 1 comment · Opened Jan 21, 2026
ZIM format is not corruption-proof Open

enhancement question

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

openzim/libzim#1032 · Opened Jan 10, 2026
Consider using another spellchecking library Open

enhancement question spellchecker

openzim/libzim#1014 · 3 comments · 2 assignees · Opened Oct 14, 2025
Spellchecker should be able to handle multiple words Open

enhancement spellchecker

openzim/libzim#1013 · 1 comment · 1 assignee · Opened Oct 14, 2025
Spellchecking should be able to return multiple suggestions Open

enhancement spellchecker

openzim/libzim#1012 · 6 comments · 1 assignee · Opened Oct 14, 2025
Move libkiwix spellchecking feature to libzim Open

enhancement spellchecker task

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

openzim/libzim#1011 · Opened Oct 14, 2025
Add support for redirect with fragments Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 42/100

openzim/libzim#1001 · 38 comments · 2 reactions · Opened Jul 8, 2025
[ZIM specification] Update specification so that the documentation of header.titlePtrPos reflects 6.3 behavior Open

specification

openzim/libzim#999 · 4 comments · 1 reaction · 1 assignee · Opened Jun 30, 2025
Snippet shown is sometimes a poor representation of the article content Open

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

openzim/libzim#996 · Opened Jun 13, 2025
Fulltext search does not return relevant results Open

bug search

Difficulty 4/5 3-5 days Newbie friendliness 45/100

openzim/libzim#988 · 3 comments · Opened May 12, 2025
Static data members in LIBZIM_API and/or LIBZIM_PRIVATE_API classes result in linker errors under Windows CI Open

enhancement task

Difficulty 4/5 3-5 days Newbie friendliness 45/100

openzim/libzim#985 · 3 comments · Opened May 4, 2025
Merge DirentLookup cache and Dirent cache Open

enhancement search

openzim/libzim#979 · 1 comment · 1 assignee · Opened Apr 21, 2025
Read the doc documentation should include xapian related methods. Open

documentation task

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

openzim/libzim#959 · Opened Mar 4, 2025
zimdump: new function to analyze ZIM content size with hints about compression factor Open

enhancement

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

openzim/libzim#957 · 4 comments · Opened Feb 24, 2025
Increase relevance of search results within ZIM by refining the indexed content Open

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

openzim/libzim#952 · 4 comments · Opened Feb 10, 2025
Possible enhancements to ZIM Open

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

openzim/libzim#951 · 2 comments · Opened Feb 10, 2025
[maintenence item] Remove transitive include dependencies Open

compilation enhancement question

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

openzim/libzim#944 · 1 comment · Opened Jan 9, 2025
Search only on a subset of articles - add faceted search to the libzim Open

enhancement question

openzim/libzim#943 · 1 assignee · Opened Jan 7, 2025
Edit ZIM content "in-place" Open

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

openzim/libzim#935 · 3 comments · 1 reaction · Opened Oct 17, 2024
Edit ZIM metadata "in-place" Open

enhancement question

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

openzim/libzim#934 · 1 comment · 1 reaction · Opened Oct 17, 2024
Multizim (suggestions) does not work at all Open

bug search

openzim/libzim#932 · 23 comments · 1 reaction · 1 assignee · Opened Sep 14, 2024
Fix dyn compilation warning on Windows Open

compilation

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

openzim/libzim#930 · 2 comments · Opened Sep 2, 2024
Index compacting is deactivated on Windows Open

enhancement search upstream

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

openzim/libzim#913 · 2 comments · Opened Aug 19, 2024
Allow to store, per article, as metadata, the original URL of the content Open

enhancement question

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

openzim/libzim#904 · Opened Jul 27, 2024
We need to know if an article is front or not Open

enhancement

openzim/libzim#885 · 1 comment · 1 assignee · Opened May 11, 2024
Allow extern `getFd()` to get file descriptors from Java for Kiwix Android Open

question

openzim/libzim#852 · 6 comments · 1 assignee · Opened Jan 15, 2024
Proposal: Harvest the power of xapian to provide advanced search and filter capabilities Open

enhancement question search

openzim/libzim#851 · 3 comments · 1 assignee · Opened Dec 30, 2023
[ZIM specification] Proposal: remove the requirement that the mimetype list has to be located at offset 80 Open

question specification

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

openzim/libzim#822 · 2 comments · Opened Sep 16, 2023
Move libzim CD from kiwix-build to this repo Open

CI question

openzim/libzim#818 · 4 comments · 1 assignee · Opened Jul 27, 2023
Libzim fails to check embeded zim file. Open

bug good first issue

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

openzim/libzim#812 · 4 comments · Opened Jun 21, 2023

openzim/libzim

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