Compare Kubernetes YAML manifests and identify added, removed, and modified resources and configuration fields between two versions.
Compare two Kubernetes YAML manifests and identify added, removed, and changed resources with exact value transitions.
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Kubernetes Resource Diff compares two Kubernetes YAML manifests and shows which resources were added, removed, changed, or left unchanged. It matches resources by kind, namespace, and metadata name, then reports field-level value transitions so manifest changes are easy to review.
A Kubernetes Resource Diff is a manifest comparison tool for reviewing changes between two versions of Kubernetes YAML. Instead of comparing raw YAML text line by line, it understands Kubernetes resources and groups changes around individual objects such as Deployments, Services, ConfigMaps, Secrets, and StatefulSets.
The comparison supports multi-document YAML files separated by --- and produces a resource-level view of what was added, removed, changed, or left unchanged.
Each resource is identified using its Kubernetes kind, namespace, and metadata.name. For example, Deployment/default/nginx represents the nginx Deployment in the default namespace.
Using resource identity instead of YAML line positions makes the comparison more useful when documents are reordered or when unrelated resources are added to a manifest.
Field changes are reported using paths such as spec.replicas or spec.template.spec.containers[0].image. Arrays are compared by their positions, so changing the order of items in an array can result in multiple detected changes.
The tool compares the parsed YAML structure rather than the original formatting. Differences in whitespace, indentation style, or YAML formatting that produce the same data structure are therefore not treated as resource changes.
This tool performs a structural comparison of YAML manifests. It does not contact a Kubernetes cluster, execute kubectl diff, evaluate admission policies, or determine whether a resulting configuration will successfully deploy.
It also does not perform semantic Kubernetes validation. A field can be structurally different while still being invalid for the Kubernetes API version or resource type.
The comparison is performed locally in your browser. The tool does not need access to a Kubernetes cluster or Docker environment.
Even though the comparison is local, avoid pasting sensitive production credentials or other confidential configuration into any browser-based tool unless you are comfortable processing that information in your browser.
Resources are matched using their kind, namespace, and metadata.name. For example, Deployment/default/nginx is matched with another Deployment named nginx in the default namespace.
Yes. The tool supports multi-document YAML, including manifests containing multiple resources separated by YAML document markers such as ---.
No. It parses the YAML and compares the resulting resource structures. Formatting-only differences are therefore not treated as resource changes.
No. The tool only compares the YAML provided in the two editors and does not connect to a Kubernetes API server or require cluster credentials.
No. It identifies structural differences but does not perform full Kubernetes API validation, admission-policy evaluation, or runtime deployment checks.
Array values are compared by their positions. If an item is inserted, removed, or reordered, the affected positions may appear as changed fields.