diff --git a/src/services/agent-service.ts b/src/services/agent-service.ts
index ce1f4472..722eb612 100644
--- a/src/services/agent-service.ts
+++ b/src/services/agent-service.ts
@@ -77,6 +77,7 @@ export class AgentService {
     profile('agentService.handleSnapshot')
 
     // truncate domSnapshot for the logs if it's very large
+    const rootURL = request.body.url
     let domSnapshotLog = request.body.domSnapshot
     if (domSnapshotLog.length > Constants.MAX_LOG_LENGTH) {
       domSnapshotLog = domSnapshotLog.substring(0, Constants.MAX_LOG_LENGTH)
@@ -116,7 +117,7 @@ export class AgentService {
     }
 
     let resources = await this.snapshotService.buildResources(
-      request.body.url,
+      rootURL,
       domSnapshot,
       snapshotOptions,
       snapshotLogger,
@@ -133,9 +134,9 @@ export class AgentService {
     }
 
     resources = resources.concat(
-      this.snapshotService.buildRootResource(request.body.url, domSnapshot),
+      this.snapshotService.buildRootResource(rootURL, domSnapshot),
       // @ts-ignore we won't write anything if css is not is passed
-      this.snapshotService.buildPercyCSSResource(percyCSSFileName, snapshotOptions.percyCSS, snapshotLogger),
+      this.snapshotService.buildPercyCSSResource(rootURL, percyCSSFileName, snapshotOptions.percyCSS, snapshotLogger),
       this.snapshotService.buildLogResource(snapshotLog),
     )
 
diff --git a/src/services/snapshot-service.ts b/src/services/snapshot-service.ts
index d849c8bf..d40231c6 100644
--- a/src/services/snapshot-service.ts
+++ b/src/services/snapshot-service.ts
@@ -2,6 +2,7 @@ import * as crypto from 'crypto'
 import * as fs from 'fs'
 import * as os from 'os'
 import * as path from 'path'
+import { URL } from 'url'
 import { AssetDiscoveryConfiguration } from '../configuration/asset-discovery-configuration'
 import { SnapshotOptions } from '../percy-agent-client/snapshot-options'
 import { logError, profile } from '../utils/logger'
@@ -65,9 +66,13 @@ export default class SnapshotService extends PercyClientService {
     })
   }
 
-  buildPercyCSSResource(fileName: string, css: string, logger: any) {
+  buildPercyCSSResource(url: string, fileName: string, css: string, logger: any) {
     if (!css) { return [] }
-    logger.debug(`Creating Percy Specific file: ${fileName}. CSS string: ${css}`)
+
+    const parsedRootResourceUrl = new URL(url)
+    const rootURL = `${parsedRootResourceUrl.protocol}//${parsedRootResourceUrl.host}`
+
+    logger.debug(`Creating Percy Specific file: ${fileName}. Root URL: ${rootURL}. CSS string: ${css}`)
 
     const buffer = Buffer.from(css, 'utf8')
     const sha = crypto.createHash('sha256').update(buffer).digest('hex')
@@ -81,7 +86,7 @@ export default class SnapshotService extends PercyClientService {
     }
 
     return this.percyClient.makeResource({
-      resourceUrl: `/${fileName}`,
+      resourceUrl: `${rootURL}/${fileName}`,
       mimetype: 'text/css',
       localPath,
       sha,