When you manage several small manifests, applying them one by one is tedious. The Multi-document YAML Merger combines them into a single YAML stream you can hand to kubectl apply -f in one shot.
Paste your manifests separated by --- (or just back to back), choose headers and duplicate detection, and the tool trims each document and rejoins them with proper separators. If two documents share the same kind and name it flags a collision so you can fix it before applying.
Everything runs locally and nothing is uploaded.