diff --git a/__tests__/result.test.ts b/__tests__/result.test.ts
index 77d1ee1..c746446 100644
--- a/__tests__/result.test.ts
+++ b/__tests__/result.test.ts
@@ -14,7 +14,7 @@ Deno.test('cheerio selector lazy loads and caches itself', async () => {
 
 
 Deno.test('cheerio selector loads with case sensitive headers', async () => {
-  const response = JSON.parse(await Deno.readTextFile('__tests__/data/response_html_case_sensitive_headers.json'));
+  const response = JSON.parse(await Deno.readTextFile('__tests__/data/response_html_success.json'));
   const result = new ScrapeResult(response);
   assertEquals(result.selector('h1').text(), 'Herman Melville - Moby-Dick');
 });
diff --git a/deno.json b/deno.json
index e61c727..c87c1bf 100644
--- a/deno.json
+++ b/deno.json
@@ -4,7 +4,7 @@
   },
   "name": "@scrapfly/scrapfly-sdk",
   "exports": "./src/main.ts",
-  "version": "0.6.6",
+  "version": "0.6.7",
   "description": "SDK for Scrapfly.io API for web scraping, screenshotting and data extraction",
   "tasks": {
     "start": "deno run --allow-net --allow-read src/main.ts",
diff --git a/src/extractionconfig.ts b/src/extractionconfig.ts
index d7c59be..1d56d75 100644
--- a/src/extractionconfig.ts
+++ b/src/extractionconfig.ts
@@ -26,7 +26,7 @@ type ExtractionConfigOptions = {
   extraction_prompt?: string;
   extraction_model?: string;
   is_document_compressed?: boolean;
-  document_compression_format?: CompressionFormat;
+  document_compression_format?: 'gzip' | 'zstd' | 'deflate' | CompressionFormat;
   webhook?: string;
 };
 
@@ -40,11 +40,14 @@ export class ExtractionConfig {
   extraction_prompt?: string;
   extraction_model?: string;
   is_document_compressed?: boolean;
-  document_compression_format?: CompressionFormat;
+  document_compression_format?: 'gzip' | 'zstd' | 'deflate' | CompressionFormat;
   webhook?: string;
 
   constructor(options: ExtractionConfigOptions) {
     this.validateOptions(options);
+    if (options.document_compression_format && !Object.values(CompressionFormat).includes(options.document_compression_format as CompressionFormat)) {
+      throw new errors.ExtractionConfigError(`Invalid CompressionFormat param value: ${options.document_compression_format}`);
+    }    
     this.body = options.body;
     this.content_type = options.content_type;
     this.url = options.url ?? this.url;
diff --git a/src/scrapeconfig.ts b/src/scrapeconfig.ts
index f75353d..91017c6 100644
--- a/src/scrapeconfig.ts
+++ b/src/scrapeconfig.ts
@@ -38,6 +38,7 @@ export enum Format {
 export enum FormatOption {
   NO_LINKS = 'no_links',
   NO_IMAGES = 'no_images',
+  ONLY_CONTENT = 'only_content'
 }
 
 type ScrapeConfigOptions = {
@@ -58,8 +59,8 @@ type ScrapeConfigOptions = {
   proxy_pool?: string;
   session?: string;
   tags?: string[];
-  format?: Format;
-  format_options?: FormatOption[];
+  format?: 'json' | 'text' | 'markdown' | 'clean_html' | 'raw' | Format;
+  format_options?: ('no_links' | 'no_images' | 'only_content' | FormatOption)[];
   correlation_id?: string;
   cookies?: Rec<string>;
   body?: string;
@@ -69,7 +70,7 @@ type ScrapeConfigOptions = {
   rendering_wait?: number;
   wait_for_selector?: string;
   screenshots?: Rec<any>;
-  screenshot_flags?: ScreenshotFlags[];
+  screenshot_flags?: ('load_images' | 'dark_mode' | 'block_banners' | 'print_media_format' | 'high_quality' | ScreenshotFlags)[];
   session_sticky_proxy?: boolean;
   webhook?: string;
   timeout?: number;
@@ -100,8 +101,8 @@ export class ScrapeConfig {
   proxy_pool?: string;
   session?: string;
   tags: Set<string> = new Set<string>();
-  format?: Format; // raw(unchanged)
-  format_options?: FormatOption[];
+  format?: 'json' | 'text' | 'markdown' | 'clean_html' | 'raw' | Format;
+  format_options?: ('no_links' | 'no_images' | 'only_content' | FormatOption)[];
   correlation_id?: string;
   cookies?: Rec<string>;
   body?: string;
@@ -112,7 +113,7 @@ export class ScrapeConfig {
   wait_for_selector?: string;
   session_sticky_proxy = false;
   screenshots?: Rec<any>;
-  screenshot_flags?: ScreenshotFlags[];
+  screenshot_flags?: ('load_images' | 'dark_mode' | 'block_banners' | 'print_media_format' | 'high_quality' | ScreenshotFlags)[];
   webhook?: string;
   timeout?: number; // in milliseconds
   js_scenario?: Rec<any>;
@@ -122,14 +123,21 @@ export class ScrapeConfig {
 
   constructor(options: ScrapeConfigOptions) {
     this.validateOptions(options);
-    if (options.format && !Object.values(Format).includes(options.format)) {
-      throw new ScrapeConfigError(`Invalid format param value: ${options.format}`);
+    if (options.format && !Object.values(Format).includes(options.format as Format)) {
+      throw new ScrapeConfigError(`Invalid Format param value: ${options.format}`);
     }
     this.format = options.format ?? this.format;
+    if (options.format_options) {
+      options.format_options.forEach((flag) => {
+        if (!Object.values(FormatOption).includes(flag as FormatOption)) {
+          throw new ScrapeConfigError(`Invalid FormatOption param value: ${flag}`);
+        }
+      });
+    }
     if (options.screenshot_flags) {
       options.screenshot_flags.forEach((flag) => {
-        if (!Object.values(ScreenshotFlags).includes(flag)) {
-          throw new ScrapeConfigError(`Invalid screenshot_flags param value: ${flag}`);
+        if (!Object.values(ScreenshotFlags).includes(flag as ScreenshotFlags)) {
+          throw new ScrapeConfigError(`Invalid ScreenshotFlags param value: ${flag}`);
         }
       });
     }
diff --git a/src/screenshotconfig.ts b/src/screenshotconfig.ts
index df9d90d..eff96b4 100644
--- a/src/screenshotconfig.ts
+++ b/src/screenshotconfig.ts
@@ -34,14 +34,14 @@ export enum Format {
 
 type ScreenshotConfigOptions = {
   url: string;
-  format?: Format;
+  format?: 'jpg'| 'png' | 'webp'| 'gif' | Format;
   capture?: string;
   resolution?: string;
   country?: string;
   timeout?: number;
   rendering_wait?: number;
   wait_for_selector?: string;
-  options?: Options[];
+  options?: ('load_images' | 'dark_mode' | 'block_banners' | 'print_media_format' | Options)[];
   auto_scroll?: boolean;
   js?: string;
   cache?: boolean;
@@ -52,14 +52,14 @@ type ScreenshotConfigOptions = {
 
 export class ScreenshotConfig {
   url: string;
-  format?: Format;
+  format?: 'jpg'| 'png' | 'webp'| 'gif' | Format;
   capture?: string;
   resolution?: string;
   country?: string = undefined;
   timeout?: number;
   rendering_wait?: number;
   wait_for_selector?: string;
-  options?: Options[];
+  options?: ('load_images' | 'dark_mode' | 'block_banners' | 'print_media_format' | Options)[];
   auto_scroll?: boolean;
   js?: string;
   cache?: boolean;
@@ -69,18 +69,17 @@ export class ScreenshotConfig {
 
   constructor(options: ScreenshotConfigOptions) {
     this.validateOptions(options);
-    if (options.format && !Object.values(Format).includes(options.format)) {
-      throw new ScreenshotConfigError(`Invalid format param value: ${options.format}`);
+    if (options.format && !Object.values(Format).includes(options.format as Format)) {
+      throw new ScreenshotConfigError(`Invalid Format param value: ${options.format}`);
     }
     this.format = options.format ?? this.format;
-    // Validate options against the enum
     if (options.options) {
       options.options.forEach((opt) => {
-        if (!Object.values(Options).includes(opt)) {
-          throw new ScreenshotConfigError(`Invalid options param value: ${opt}`);
+        if (!Object.values(Options).includes(opt as Options)) {
+          throw new ScreenshotConfigError(`Invalid Options param value: ${opt}`);
         }
       });
-    }
+    }    
     this.url = options.url;
     this.format = options.format ?? this.format;
     this.capture = options.capture ?? this.capture;