We compare the Kuratorium fur Technik und Bauwesen in der Landwirtschaft e.V. (KTBL) protocol, a German protocol for sows and piglets developed for farm's self-inspection, to the Welfare Quality(R) protocol for sows and piglets (WQ). The KTBL protocol introduces new indicators for piglets to be assessed at pen level (face lesions, carpal joint lesions, undersized animals). The reliability of their assessment at pen level was analysed by comparison to assessments at individual level. Both protocols were applied by one observer in 65 farm visits. The protocols are highly similar, although the composition varies (WQ protocol: focus on animal-based, KTBL protocol: focus on management-based indicators). Consequently, the WQ protocol detected more welfare issues (e.g., welfare issues related to appropriate behaviour: 62.9% (WQ) vs. 21.0% (KTBL protocol)). The comparison between pen and individual level of piglets' indicators was determined using Spearman's rank correlation coefficient (RS), intraclass correlation coefficient (ICC) and limits of agreement (LoA). Carpal joint lesions and undersized animals (RS 0.73/0.80 ICC 0.55/0.57 LoA -0.12 to 0.03/-0.01 to 0.01) are reliably assessed at pen level but face lesions (RS 0.19 ICC 0.18 LoA -0.42 to 0.03) are not. Concluding, we present advantages and disadvantages of the KTBL protocol and introduce indicators for piglets which may enhance existing protocols.