diff --git a/package-lock.json b/package-lock.json
index e01c9a3..20b6af7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
         "axios": "^1.3.3",
         "bcrypt": "^5.1.0",
         "busboy": "^1.6.0",
-        "civkit": "^0.8.4-6ed9027",
+        "civkit": "^0.8.4-bc8ef5e",
         "core-js": "^3.37.1",
         "cors": "^2.8.5",
         "dayjs": "^1.11.9",
@@ -4095,9 +4095,9 @@
       }
     },
     "node_modules/civkit": {
-      "version": "0.8.4-6ed9027",
-      "resolved": "https://registry.npmjs.org/civkit/-/civkit-0.8.4-6ed9027.tgz",
-      "integrity": "sha512-VU8Ykik1L16Li9/QZfw5wYsmu3jJYH/zIHbM6Vd2ajRI7Mh4fSO3cXadUntM190BersLW9Fts+qunDPabhIWZA==",
+      "version": "0.8.4-bc8ef5e",
+      "resolved": "https://registry.npmjs.org/civkit/-/civkit-0.8.4-bc8ef5e.tgz",
+      "integrity": "sha512-WpybmXgLxUmqrqTeCsWmVFRSEq/3up34kFfByEssXARom5XcvB9uAHzXHhPXmob3m9BGxBXAALD04UBOUq0J4g==",
       "license": "AGPL",
       "dependencies": {
         "lodash": "^4.17.21",
diff --git a/package.json b/package.json
index 3724cc6..f7f89b3 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "axios": "^1.3.3",
     "bcrypt": "^5.1.0",
     "busboy": "^1.6.0",
-    "civkit": "^0.8.4-6ed9027",
+    "civkit": "^0.8.4-bc8ef5e",
     "core-js": "^3.37.1",
     "cors": "^2.8.5",
     "dayjs": "^1.11.9",
diff --git a/src/api/crawler.ts b/src/api/crawler.ts
index 594d683..77cd822 100644
--- a/src/api/crawler.ts
+++ b/src/api/crawler.ts
@@ -42,6 +42,8 @@ import { ProxyProvider } from '../shared/services/proxy-provider';
 import { FirebaseStorageBucketControl } from '../shared/services/firebase-storage-bucket';
 import { JinaEmbeddingsAuthDTO } from '../dto/jina-embeddings-auth';
 import { RobotsTxtService } from '../services/robots-text';
+import { lookup } from 'dns/promises';
+import { isIP } from 'net';
 
 export interface ExtraScrappingOptions extends ScrappingOptions {
     withIframe?: boolean | 'quoted';
@@ -465,7 +467,7 @@ export class CrawlerHost extends RPCHost {
         const targetUrlFromGet = originPath.slice(1);
         if (crawlerOptions.pdf) {
             const pdfBuf = crawlerOptions.pdf instanceof Blob ? await crawlerOptions.pdf.arrayBuffer().then((x) => Buffer.from(x)) : Buffer.from(crawlerOptions.pdf, 'base64');
-            url = `file://pdf.${md5Hasher.hash(pdfBuf)}`;
+            url = `blob://pdf/${md5Hasher.hash(pdfBuf)}`;
         } else if (targetUrlFromGet) {
             url = targetUrlFromGet.trim();
         } else if (crawlerOptions.url) {
@@ -495,13 +497,26 @@ export class CrawlerHost extends RPCHost {
             });
         }
 
-        if (!['http:', 'https:', 'file:'].includes(result.protocol)) {
+        if (!['http:', 'https:', 'blob:'].includes(result.protocol)) {
             throw new ParamValidationError({
                 message: `Invalid protocol ${result.protocol}`,
                 path: 'url'
             });
         }
 
+        if (!isIP(result.hostname)) {
+            await lookup(result.hostname).catch((err) => {
+                if (err.code === 'ENOTFOUND') {
+                    return Promise.reject(new ParamValidationError({
+                        message: `Domain '${result.hostname}' could not be resolved`,
+                        path: 'url'
+                    }));
+                }
+
+                return;
+            });
+        }
+
         return result;
     }
 
diff --git a/src/services/puppeteer.ts b/src/services/puppeteer.ts
index 446a428..e3cc31e 100644
--- a/src/services/puppeteer.ts
+++ b/src/services/puppeteer.ts
@@ -605,15 +605,15 @@ export class PuppeteerControl extends AsyncService {
             }
 
             const parsedUrl = new URL(requestUrl);
-            try {
-                if (isIP(parsedUrl.hostname)) {
-                    domainSet.add(parsedUrl.hostname);
-                } else {
+            if (isIP(parsedUrl.hostname)) {
+                domainSet.add(parsedUrl.hostname);
+            } else {
+                try {
                     const tldParsed = tldExtract(requestUrl);
                     domainSet.add(tldParsed.domain);
+                } catch (_err) {
+                    domainSet.add(parsedUrl.hostname);
                 }
-            } catch (err) {
-                return req.abort('blockedbyclient', 1000);
             }
 
             if (this.circuitBreakerHosts.has(parsedUrl.hostname.toLowerCase())) {