diff --git a/src/components/OptionsButton.tsx b/src/components/OptionsButton.tsx
index 0de16737..f0b880e1 100644
--- a/src/components/OptionsButton.tsx
+++ b/src/components/OptionsButton.tsx
@@ -19,6 +19,7 @@ import { useCopyToClipboard } from "react-use";
 import { ChatCraftChat } from "../lib/ChatCraftChat";
 import { useUser } from "../hooks/use-user";
 import { useAlert } from "../hooks/use-alert";
+import { useSettings } from "../hooks/use-settings";
 import ShareModal from "./ShareModal";
 import { download, compressImageToBase64 } from "../lib/utils";
 import theme from "../theme";
@@ -91,6 +92,7 @@ function OptionsButton({
   const { info, error } = useAlert();
   const [, copyToClipboard] = useCopyToClipboard();
   const fileInputRef = useRef<HTMLInputElement>(null);
+  const { settings } = useSettings();
 
   const handleFileChange = useCallback(
     (event: React.ChangeEvent<HTMLInputElement>) => {
@@ -105,7 +107,11 @@ function OptionsButton({
           const file = files[i];
           if (file.type.startsWith("image/")) {
             onFileSelected("");
-            compressImageToBase64(file)
+            compressImageToBase64(file, {
+              compressionFactor: settings.compressionFactor,
+              maxSizeMB: settings.maxCompressedFileSizeMB,
+              maxWidthOrHeight: settings.maxImageDimension,
+            })
               .then((base64) => onFileSelected(base64))
               .catch((err) => {
                 console.error(err);
@@ -123,7 +129,13 @@ function OptionsButton({
         event.target.value = "";
       }
     },
-    [error, onFileSelected]
+    [
+      error,
+      onFileSelected,
+      settings.compressionFactor,
+      settings.maxCompressedFileSizeMB,
+      settings.maxImageDimension,
+    ]
   );
 
   const handleAttachFiles = useCallback(() => {
diff --git a/src/components/PreferencesModal.tsx b/src/components/PreferencesModal.tsx
index b211efd1..14e7bf49 100644
--- a/src/components/PreferencesModal.tsx
+++ b/src/components/PreferencesModal.tsx
@@ -455,6 +455,93 @@ function PreferencesModal({ isOpen, onClose, finalFocusRef }: PreferencesModalPr
                 </FormHelperText>
               </FormControl>
 
+              <FormControl as="fieldset">
+                <FormLabel as="legend">Image Compression</FormLabel>
+                <Stack>
+                  <Box px="5">
+                    <FormControl>
+                      <FormLabel>
+                        Maximum file size after compression: {settings.maxCompressedFileSizeMB} (MB)
+                      </FormLabel>
+                      <Slider
+                        id="max-compressed-file-size"
+                        value={settings.maxCompressedFileSizeMB}
+                        onChange={(value) =>
+                          setSettings({ ...settings, maxCompressedFileSizeMB: value })
+                        }
+                        min={1}
+                        max={20}
+                        step={1}
+                      >
+                        <SliderTrack>
+                          <SliderFilledTrack />
+                        </SliderTrack>
+                        <SliderThumb />
+                      </Slider>
+                      <FormErrorMessage>
+                        Maximum file size must be between 1 and 20 MB.
+                      </FormErrorMessage>
+                      <FormHelperText>
+                        After compression, each attached image will be under your chosen maximum
+                        file size (1-20 MB).
+                      </FormHelperText>
+                    </FormControl>
+                  </Box>
+                  <Box px="5">
+                    <FormControl>
+                      <FormLabel>
+                        Maximum image dimension: {settings.maxImageDimension} (px)
+                      </FormLabel>
+                      <Slider
+                        id="max-image-dimension"
+                        value={settings.maxImageDimension}
+                        onChange={(value) => setSettings({ ...settings, maxImageDimension: value })}
+                        min={16}
+                        max={2048}
+                        step={16}
+                      >
+                        <SliderTrack>
+                          <SliderFilledTrack />
+                        </SliderTrack>
+                        <SliderThumb />
+                      </Slider>
+                      <FormErrorMessage>
+                        Maximum Image dimension must be between 16 and 2048
+                      </FormErrorMessage>
+                      <FormHelperText>
+                        Your compressed image&apos;s maximum width or height will be within the
+                        dimension you choose (16-2048 pixels).
+                      </FormHelperText>
+                    </FormControl>
+                  </Box>
+                  <Box px="5">
+                    <FormControl>
+                      <FormLabel>Compression factor: {settings.compressionFactor}</FormLabel>
+                      <Slider
+                        id="compression-factor"
+                        value={settings.compressionFactor}
+                        onChange={(value) => setSettings({ ...settings, compressionFactor: value })}
+                        min={0.1}
+                        max={1}
+                        step={0.1}
+                      >
+                        <SliderTrack>
+                          <SliderFilledTrack />
+                        </SliderTrack>
+                        <SliderThumb />
+                      </Slider>
+                      <FormErrorMessage>
+                        Compression factor must be between 0.1 and 1.0
+                      </FormErrorMessage>
+                      <FormHelperText>
+                        Set the maximum file size based on the original size multiplied by the
+                        factor you choose (0.1-1.0).
+                      </FormHelperText>
+                    </FormControl>
+                  </Box>
+                </Stack>
+              </FormControl>
+
               <FormControl>
                 <FormLabel>
                   When writing a prompt, press <Kbd>Enter</Kbd> to...
diff --git a/src/components/PromptForm/DesktopPromptForm.tsx b/src/components/PromptForm/DesktopPromptForm.tsx
index 0c5951da..697e4451 100644
--- a/src/components/PromptForm/DesktopPromptForm.tsx
+++ b/src/components/PromptForm/DesktopPromptForm.tsx
@@ -227,8 +227,15 @@ function DesktopPromptForm({
 
   const processImages = (imageFiles: File[]) => {
     setInputImageUrls((prevImageUrls) => [...prevImageUrls, ...imageFiles.map(() => "")]);
-
-    Promise.all(imageFiles.map((file) => compressImageToBase64(file)))
+    Promise.all(
+      imageFiles.map((file) =>
+        compressImageToBase64(file, {
+          compressionFactor: settings.compressionFactor,
+          maxSizeMB: settings.maxCompressedFileSizeMB,
+          maxWidthOrHeight: settings.maxImageDimension,
+        })
+      )
+    )
       .then((base64Strings) => {
         setInputImageUrls((prevImageUrls) => {
           const newImageUrls = [...prevImageUrls];
diff --git a/src/lib/settings.ts b/src/lib/settings.ts
index 71d15e62..9c6ca496 100644
--- a/src/lib/settings.ts
+++ b/src/lib/settings.ts
@@ -39,6 +39,9 @@ export type Settings = {
   textToSpeech: TextToSpeechSettings;
   providers: ProviderData;
   currentProvider: ChatCraftProvider;
+  compressionFactor: number;
+  maxCompressedFileSizeMB: number;
+  maxImageDimension: number;
 };
 
 export const defaults: Settings = {
@@ -56,6 +59,9 @@ export const defaults: Settings = {
   },
   providers: {},
   currentProvider: new FreeModelProvider(),
+  compressionFactor: 1,
+  maxCompressedFileSizeMB: 20,
+  maxImageDimension: 2048,
 };
 
 export const key = "settings";
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index 8fc23ab4..f4388772 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -84,18 +84,28 @@ export const screenshotElement = (element: HTMLElement): Promise<Blob> => {
     );
 };
 
+interface ImageCompressionOptions {
+  compressionFactor?: number;
+  maxSizeMB?: number;
+  maxWidthOrHeight?: number;
+}
 // Make sure image's size is within 20MB and 2048x2048 resolution
 // https://platform.openai.com/docs/guides/vision/is-there-a-limit-to-the-size-of-the-image-i-can-upload
-export const compressImageToBase64 = (file: File): Promise<string> => {
-  const imageCompressionOptions = {
-    maxSizeMB: 20,
-    maxWidthOrHeight: 2048,
+export const compressImageToBase64 = (
+  file: File,
+  options: ImageCompressionOptions = {}
+): Promise<string> => {
+  const { compressionFactor = 1, maxSizeMB = 20, maxWidthOrHeight = 2048 } = options;
+
+  const libOptions = {
+    maxSizeMB: Math.min((file.size / 1024 / 1024) * compressionFactor, maxSizeMB, 20),
+    maxWidthOrHeight: Math.min(maxWidthOrHeight, 2048),
   };
 
   return import("browser-image-compression")
     .then((imageCompressionModule) => {
       const imageCompression = imageCompressionModule.default;
-      return imageCompression(file, imageCompressionOptions);
+      return imageCompression(file, libOptions);
     })
     .then((compressedFile: File) => {
       return new Promise<string>((resolve, reject) => {