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A quantitative approach to evaluate Website Archivability using the CLEAR+ method


Website Archivability (WA) is a notion established to capture the core aspects of a website, crucial in diagnosing whether it has the potential to be archived with completeness and accuracy. In this work, aiming at measuring WA, we introduce and elaborate on all aspects of CLEAR+, an extended version of the Credible Live Evaluation Method for Archive Readiness (CLEAR) method. We use a systematic approach to evaluate WA from multiple different perspectives, which we call Website Archivability Facets. We then analyse, a web application we created as the reference implementation of CLEAR+, and discuss the implementation of the evaluation workflow. Finally, we conduct thorough evaluations of all aspects of WA to support the validity, the reliability and the benefits of our method using real-world web data.

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  1. The numbers reported in this paragraph are from the Daily Estimated Size of the World Wide Web,, January 2014.






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We would like to thank our colleagues: Panagiotis Symeonidis, Georgia Latsiou and Konstantinos Mokos, for their assistance in Sect. 5.3, Evaluation by experts. We would like to thank the anonymous reviewers for their valuable input, which helped us to significantly improve this manuscript. In particular, their feedback was critical to improve Sect. 3 on the CLEAR+ method and Sect. 5 on the experimental evaluation.

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Correspondence to Vangelis Banos.

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Banos, V., Manolopoulos, Y. A quantitative approach to evaluate Website Archivability using the CLEAR+ method. Int J Digit Libr 17, 119–141 (2016).

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  • Web archiving
  • Website Archivability
  • Web harvesting