diff --git a/bids-validator/src/schema/context.ts b/bids-validator/src/schema/context.ts
index 7d4c8dccf..dd5660934 100644
--- a/bids-validator/src/schema/context.ts
+++ b/bids-validator/src/schema/context.ts
@@ -107,6 +107,10 @@ export class BIDSContext implements Context {
     this.associations = {} as ContextAssociations
   }
 
+  get size(): number {
+    return this.file.size
+  }
+
   get path(): string {
     return this.file.path
   }
diff --git a/bids-validator/src/types/context.ts b/bids-validator/src/types/context.ts
index 4b47ef0cf..e9c1c7843 100644
--- a/bids-validator/src/types/context.ts
+++ b/bids-validator/src/types/context.ts
@@ -91,6 +91,7 @@ export interface Context {
   dataset: ContextDataset
   subject: ContextSubject
   path: string
+  size: number
   entities: object
   datatype: string
   suffix: string