SamlaLibris

External Link Health Study – RAA

Last updated: 2025-12-01

Scope and method

This report measures HTTP availability of external links used in Wikipedia. Findings reflect technical accessibility, not content validity.

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Summary

• Total external links: 300
• Broken links: 42 (14.0%)
• Legacy DSpace links: 3
• Dominant failure mode: removal of DSpace XMLUI endpoints

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Broken links by Wikipedia (Top 15)

| wiki | links_total | broken_links | legacy_dspace | broken_pct | |——–|—————|—————-|—————–|————–|

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Broken links by content language (Top 15)

	links	broken	broken_pct
(‘da’, ‘dansk’)	22	22	100
(‘nn’, ‘norsk nynorsk’)	16	16	100
(‘sv’, ‘svenska’)	58	3	5.17
(‘cdo’, ‘閩東語 / Mìng-dĕ̤ng-ngṳ̄’)	1	1	100
(‘af’, ‘Afrikaans’)	7	0	0
(‘an’, ‘aragonés’)	5	0	0
(‘ast’, ‘asturianu’)	2	0	0
(‘de’, ‘Deutsch’)	25	0	0
(‘en’, ‘English’)	82	0	0
(‘es’, ‘español’)	32	0	0
(‘eu’, ‘euskara’)	1	0	0
(‘fi’, ‘suomi’)	6	0	0
(‘nl’, ‘Nederlands’)	1	0	0
(‘no’, ‘norsk’)	40	0	0
(‘pl’, ‘polski’)	2	0	0

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Link rot over time (year heuristic)

year	links	broken	legacy	broken_pct
1936	2	0	0	0
1939	1	0	0	0
1956	1	0	0	0
1973	1	0	0	0
1974	1	0	0	0
1976	1	0	0	0
1978	2	0	0	0
1979	9	0	0	0
1981	1	1	1	100
2000	8	0	0	0
2003	1	1	0	100
2009	1	0	0	0
2014	1	0	0	0
2016	1	0	0	0
2018	1	1	0	100
2027	1	0	0	0
2069	1	0	0	0
2073	1	0	0	0
2074	1	0	0	0
2088	1	0	0	0

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Domains showing blocking or throttling

| domain | checks | ok | timeouts | conn_errors | mean_latency | problem_ratio | |———-|———-|——|————|—————|—————-|—————–|

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Sample links needing manual repair

Wikipedia-sida	Extern länk	repair_reason	migration_hint
Sune Lindqvist	http://samla.raa.se/xmlui/bitstream/handle/raa/799/1926_307.pdf?sequence=1	RAA DSpace XMLUI migration	https://samla.raa.se/discover?query=1926_307.pdf%3Fsequence%3D1
Vendeltiden	http://samla.raa.se/xmlui/bitstream/handle/raa/2429/1981_008.pdf?sequence=1	RAA DSpace XMLUI migration	https://samla.raa.se/discover?query=1981_008.pdf%3Fsequence%3D1

Full list: results/links_needing_manual_repair.csv