diff --git a/ui/v2.5/src/components/Changelog/versions/v090.md b/ui/v2.5/src/components/Changelog/versions/v090.md
index abbe3fe64..8855adad5 100644
--- a/ui/v2.5/src/components/Changelog/versions/v090.md
+++ b/ui/v2.5/src/components/Changelog/versions/v090.md
@@ -9,6 +9,7 @@
 * Added not equals/greater than/less than modifiers for resolution criteria. ([#1568](https://github.com/stashapp/stash/pull/1568))
 
 ### 🎨 Improvements
+* Prompt when leaving gallery edit page with unsaved changes. ([#1654](https://github.com/stashapp/stash/pull/1654))
 * Show largest duplicates first in scene duplicate checker. ([#1639](https://github.com/stashapp/stash/pull/1639))
 * Added checkboxes to scene list view. ([#1642](https://github.com/stashapp/stash/pull/1642))
 * Added keyboard shortcuts for scene queue navigation. ([#1635](https://github.com/stashapp/stash/pull/1635))
diff --git a/ui/v2.5/src/components/Galleries/GalleryDetails/GalleryEditPanel.tsx b/ui/v2.5/src/components/Galleries/GalleryDetails/GalleryEditPanel.tsx
index b2e8092f4..c83b94bc7 100644
--- a/ui/v2.5/src/components/Galleries/GalleryDetails/GalleryEditPanel.tsx
+++ b/ui/v2.5/src/components/Galleries/GalleryDetails/GalleryEditPanel.tsx
@@ -11,6 +11,7 @@ import {
 } from "react-bootstrap";
 import Mousetrap from "mousetrap";
 import * as GQL from "src/core/generated-graphql";
+import * as yup from "yup";
 import {
   queryScrapeGallery,
   queryScrapeGalleryURL,
@@ -28,7 +29,9 @@ import {
   LoadingIndicator,
 } from "src/components/Shared";
 import { useToast } from "src/hooks";
-import { FormUtils, EditableTextUtils, TextUtils } from "src/utils";
+import { useFormik } from "formik";
+import { Prompt } from "react-router";
+import { FormUtils, TextUtils } from "src/utils";
 import { RatingStars } from "src/components/Scenes/SceneDetails/RatingStars";
 import { GalleryScrapeDialog } from "./GalleryScrapeDialog";
 
@@ -53,25 +56,11 @@ export const GalleryEditPanel: React.FC<
   const intl = useIntl();
   const Toast = useToast();
   const history = useHistory();
-  const [title, setTitle] = useState<string>(gallery?.title ?? "");
-  const [details, setDetails] = useState<string>(gallery?.details ?? "");
-  const [url, setUrl] = useState<string>(gallery?.url ?? "");
-  const [date, setDate] = useState<string>(gallery?.date ?? "");
-  const [rating, setRating] = useState<number>(gallery?.rating ?? NaN);
-  const [studioId, setStudioId] = useState<string | undefined>(
-    gallery?.studio?.id ?? undefined
-  );
-  const [performerIds, setPerformerIds] = useState<string[]>(
-    gallery?.performers.map((p) => p.id) ?? []
-  );
-  const [tagIds, setTagIds] = useState<string[]>(
-    gallery?.tags.map((t) => t.id) ?? []
-  );
   const [scenes, setScenes] = useState<{ id: string; title: string }[]>(
-    gallery?.scenes.map((s) => ({
+    (gallery?.scenes ?? []).map((s) => ({
       id: s.id,
       title: s.title ?? TextUtils.fileNameFromPath(s.path ?? ""),
-    })) ?? []
+    }))
   );
 
   const Scrapers = useListGalleryScrapers();
@@ -88,10 +77,59 @@ export const GalleryEditPanel: React.FC<
   const [createGallery] = useGalleryCreate();
   const [updateGallery] = useGalleryUpdate();
 
+  const schema = yup.object({
+    title: yup.string().required(),
+    details: yup.string().optional().nullable(),
+    url: yup.string().optional().nullable(),
+    date: yup.string().optional().nullable(),
+    rating: yup.number().optional().nullable(),
+    studio_id: yup.string().optional().nullable(),
+    performer_ids: yup.array(yup.string().required()).optional().nullable(),
+    tag_ids: yup.array(yup.string().required()).optional().nullable(),
+    scene_ids: yup.array(yup.string().required()).optional().nullable(),
+  });
+
+  const initialValues = {
+    title: gallery?.title ?? "",
+    details: gallery?.details ?? "",
+    url: gallery?.url ?? "",
+    date: gallery?.date ?? "",
+    rating: gallery?.rating ?? null,
+    studio_id: gallery?.studio?.id,
+    performer_ids: (gallery?.performers ?? []).map((p) => p.id),
+    tag_ids: (gallery?.tags ?? []).map((t) => t.id),
+    scene_ids: (gallery?.scenes ?? []).map((s) => s.id),
+  };
+
+  type InputValues = typeof initialValues;
+
+  const formik = useFormik({
+    initialValues,
+    validationSchema: schema,
+    onSubmit: (values) => onSave(getGalleryInput(values)),
+  });
+
+  function setRating(v: number) {
+    formik.setFieldValue("rating", v);
+  }
+
+  interface ISceneSelectValue {
+    id: string;
+    title: string;
+  }
+
+  function onSetScenes(items: ISceneSelectValue[]) {
+    setScenes(items);
+    formik.setFieldValue(
+      "scene_ids",
+      items.map((i) => i.id)
+    );
+  }
+
   useEffect(() => {
     if (isVisible) {
       Mousetrap.bind("s s", () => {
-        onSave();
+        formik.handleSubmit();
       });
       Mousetrap.bind("d d", () => {
         onDelete();
@@ -140,28 +178,24 @@ export const GalleryEditPanel: React.FC<
     setQueryableScrapers(newQueryableScrapers);
   }, [Scrapers]);
 
-  function getGalleryInput() {
+  function getGalleryInput(
+    input: InputValues
+  ): GQL.GalleryCreateInput | GQL.GalleryUpdateInput {
     return {
       id: isNew ? undefined : gallery?.id ?? "",
-      title: title ?? "",
-      details,
-      url,
-      date,
-      rating: rating ?? null,
-      studio_id: studioId ?? null,
-      performer_ids: performerIds,
-      tag_ids: tagIds,
-      scene_ids: scenes.map((s) => s.id),
+      ...input,
     };
   }
 
-  async function onSave() {
+  async function onSave(
+    input: GQL.GalleryCreateInput | GQL.GalleryUpdateInput
+  ) {
     setIsLoading(true);
     try {
       if (isNew) {
         const result = await createGallery({
           variables: {
-            input: getGalleryInput(),
+            input: input as GQL.GalleryCreateInput,
           },
         });
         if (result.data?.galleryCreate) {
@@ -171,7 +205,7 @@ export const GalleryEditPanel: React.FC<
       } else {
         const result = await updateGallery({
           variables: {
-            input: getGalleryInput() as GQL.GalleryUpdateInput,
+            input: input as GQL.GalleryUpdateInput,
           },
         });
         if (result.data?.galleryUpdate) {
@@ -185,6 +219,7 @@ export const GalleryEditPanel: React.FC<
               }
             ),
           });
+          formik.resetForm({ values: formik.values });
         }
       }
     } catch (e) {
@@ -196,7 +231,9 @@ export const GalleryEditPanel: React.FC<
   async function onScrapeClicked(scraper: GQL.Scraper) {
     setIsLoading(true);
     try {
-      const galleryInput = getGalleryInput() as GQL.GalleryUpdateInput;
+      const galleryInput = getGalleryInput(
+        formik.values
+      ) as GQL.GalleryUpdateInput;
       const result = await queryScrapeGallery(scraper.id, galleryInput);
       if (!result.data || !result.data.scrapeGallery) {
         Toast.success({
@@ -238,7 +275,7 @@ export const GalleryEditPanel: React.FC<
       return;
     }
 
-    const currentGallery = getGalleryInput();
+    const currentGallery = getGalleryInput(formik.values);
 
     return (
       <GalleryScrapeDialog
@@ -289,23 +326,23 @@ export const GalleryEditPanel: React.FC<
     galleryData: GQL.ScrapedGalleryDataFragment
   ) {
     if (galleryData.title) {
-      setTitle(galleryData.title);
+      formik.setFieldValue("title", galleryData.title);
     }
 
     if (galleryData.details) {
-      setDetails(galleryData.details);
+      formik.setFieldValue("details", galleryData.details);
     }
 
     if (galleryData.date) {
-      setDate(galleryData.date);
+      formik.setFieldValue("date", galleryData.date);
     }
 
     if (galleryData.url) {
-      setUrl(galleryData.url);
+      formik.setFieldValue("url", galleryData.url);
     }
 
     if (galleryData.studio?.stored_id) {
-      setStudioId(galleryData.studio.stored_id);
+      formik.setFieldValue("studio_id", galleryData.studio.stored_id);
     }
 
     if (galleryData.performers?.length) {
@@ -315,7 +352,7 @@ export const GalleryEditPanel: React.FC<
 
       if (idPerfs.length > 0) {
         const newIds = idPerfs.map((p) => p.stored_id);
-        setPerformerIds(newIds as string[]);
+        formik.setFieldValue("performer_ids", newIds as string[]);
       }
     }
 
@@ -326,18 +363,18 @@ export const GalleryEditPanel: React.FC<
 
       if (idTags.length > 0) {
         const newIds = idTags.map((t) => t.stored_id);
-        setTagIds(newIds as string[]);
+        formik.setFieldValue("tag_ids", newIds as string[]);
       }
     }
   }
 
   async function onScrapeGalleryURL() {
-    if (!url) {
+    if (!formik.values.url) {
       return;
     }
     setIsLoading(true);
     try {
-      const result = await queryScrapeGalleryURL(url);
+      const result = await queryScrapeGalleryURL(formik.values.url);
       if (!result || !result.data || !result.data.scrapeGalleryURL) {
         return;
       }
@@ -350,7 +387,7 @@ export const GalleryEditPanel: React.FC<
   }
 
   function maybeRenderScrapeButton() {
-    if (!url || !urlScrapable(url)) {
+    if (!formik.values.url || !urlScrapable(formik.values.url)) {
       return undefined;
     }
     return (
@@ -364,158 +401,197 @@ export const GalleryEditPanel: React.FC<
     );
   }
 
+  function renderTextField(field: string, title: string, placeholder?: string) {
+    return (
+      <Form.Group controlId={title} as={Row}>
+        {FormUtils.renderLabel({
+          title,
+        })}
+        <Col xs={9}>
+          <Form.Control
+            className="text-input"
+            placeholder={placeholder ?? title}
+            {...formik.getFieldProps(field)}
+            isInvalid={!!formik.getFieldMeta(field).error}
+          />
+          <Form.Control.Feedback type="invalid">
+            {formik.getFieldMeta(field).error}
+          </Form.Control.Feedback>
+        </Col>
+      </Form.Group>
+    );
+  }
+
   if (isLoading) return <LoadingIndicator />;
 
   return (
     <div id="gallery-edit-details">
+      <Prompt
+        when={formik.dirty}
+        message={intl.formatMessage({ id: "dialogs.unsaved_changes" })}
+      />
+
       {maybeRenderScrapeDialog()}
-      <div className="form-container row px-3 pt-3">
-        <div className="col edit-buttons mb-3 pl-0">
-          <Button className="edit-button" variant="primary" onClick={onSave}>
-            <FormattedMessage id="actions.save" />
-          </Button>
-          <Button
-            className="edit-button"
-            variant="danger"
-            onClick={() => onDelete()}
-          >
-            <FormattedMessage id="actions.delete" />
-          </Button>
+      <Form noValidate onSubmit={formik.handleSubmit}>
+        <div className="form-container row px-3 pt-3">
+          <div className="col edit-buttons mb-3 pl-0">
+            <Button
+              className="edit-button"
+              variant="primary"
+              disabled={!formik.dirty}
+              onClick={() => formik.submitForm()}
+            >
+              <FormattedMessage id="actions.save" />
+            </Button>
+            <Button
+              className="edit-button"
+              variant="danger"
+              onClick={() => onDelete()}
+            >
+              <FormattedMessage id="actions.delete" />
+            </Button>
+          </div>
+          <Col xs={6} className="text-right">
+            {renderScraperMenu()}
+          </Col>
         </div>
-        <Col xs={6} className="text-right">
-          {renderScraperMenu()}
-        </Col>
-      </div>
-      <div className="form-container row px-3">
-        <div className="col-12 col-lg-6 col-xl-12">
-          {FormUtils.renderInputGroup({
-            title: intl.formatMessage({ id: "title" }),
-            value: title,
-            onChange: setTitle,
-            isEditing: true,
-          })}
-          <Form.Group controlId="url" as={Row}>
-            <Col xs={3} className="pr-0 url-label">
-              <Form.Label className="col-form-label">
-                {intl.formatMessage({ id: "url" })}
-              </Form.Label>
-              <div className="float-right scrape-button-container">
-                {maybeRenderScrapeButton()}
-              </div>
-            </Col>
-            <Col xs={9}>
-              {EditableTextUtils.renderInputGroup({
-                title: intl.formatMessage({ id: "url" }),
-                value: url,
-                onChange: setUrl,
-                isEditing: true,
+        <div className="form-container row px-3">
+          <div className="col-12 col-lg-6 col-xl-12">
+            {renderTextField("title", intl.formatMessage({ id: "title" }))}
+            <Form.Group controlId="url" as={Row}>
+              <Col xs={3} className="pr-0 url-label">
+                <Form.Label className="col-form-label">
+                  <FormattedMessage id="url" />
+                </Form.Label>
+                <div className="float-right scrape-button-container">
+                  {maybeRenderScrapeButton()}
+                </div>
+              </Col>
+              <Col xs={9}>
+                <Form.Control
+                  className="text-input"
+                  placeholder={intl.formatMessage({ id: "url" })}
+                  {...formik.getFieldProps("url")}
+                  isInvalid={!!formik.getFieldMeta("url").error}
+                />
+              </Col>
+            </Form.Group>
+            {renderTextField(
+              "date",
+              intl.formatMessage({ id: "date" }),
+              "YYYY-MM-DD"
+            )}
+            <Form.Group controlId="rating" as={Row}>
+              {FormUtils.renderLabel({
+                title: intl.formatMessage({ id: "rating" }),
               })}
-            </Col>
-          </Form.Group>
-          {FormUtils.renderInputGroup({
-            title: intl.formatMessage({ id: "date" }),
-            value: date,
-            isEditing: true,
-            onChange: setDate,
-            placeholder: "YYYY-MM-DD",
-          })}
-          <Form.Group controlId="rating" as={Row}>
-            {FormUtils.renderLabel({
-              title: intl.formatMessage({ id: "rating" }),
-            })}
-            <Col xs={9}>
-              <RatingStars
-                value={rating}
-                onSetRating={(value) => setRating(value ?? NaN)}
-              />
-            </Col>
-          </Form.Group>
+              <Col xs={9}>
+                <RatingStars
+                  value={formik.values.rating ?? undefined}
+                  onSetRating={(value) =>
+                    formik.setFieldValue("rating", value ?? null)
+                  }
+                />
+              </Col>
+            </Form.Group>
 
-          <Form.Group controlId="studio" as={Row}>
-            {FormUtils.renderLabel({
-              title: intl.formatMessage({ id: "studio" }),
-            })}
-            <Col xs={9}>
-              <StudioSelect
-                onSelect={(items) =>
-                  setStudioId(items.length > 0 ? items[0]?.id : undefined)
+            <Form.Group controlId="studio" as={Row}>
+              {FormUtils.renderLabel({
+                title: intl.formatMessage({ id: "studio" }),
+              })}
+              <Col xs={9}>
+                <StudioSelect
+                  onSelect={(items) =>
+                    formik.setFieldValue(
+                      "studio_id",
+                      items.length > 0 ? items[0]?.id : null
+                    )
+                  }
+                  ids={formik.values.studio_id ? [formik.values.studio_id] : []}
+                />
+              </Col>
+            </Form.Group>
+
+            <Form.Group controlId="performers" as={Row}>
+              {FormUtils.renderLabel({
+                title: intl.formatMessage({ id: "performers" }),
+                labelProps: {
+                  column: true,
+                  sm: 3,
+                  xl: 12,
+                },
+              })}
+              <Col sm={9} xl={12}>
+                <PerformerSelect
+                  isMulti
+                  onSelect={(items) =>
+                    formik.setFieldValue(
+                      "performer_ids",
+                      items.map((item) => item.id)
+                    )
+                  }
+                  ids={formik.values.performer_ids}
+                />
+              </Col>
+            </Form.Group>
+
+            <Form.Group controlId="tags" as={Row}>
+              {FormUtils.renderLabel({
+                title: intl.formatMessage({ id: "tags" }),
+                labelProps: {
+                  column: true,
+                  sm: 3,
+                  xl: 12,
+                },
+              })}
+              <Col sm={9} xl={12}>
+                <TagSelect
+                  isMulti
+                  onSelect={(items) =>
+                    formik.setFieldValue(
+                      "tag_ids",
+                      items.map((item) => item.id)
+                    )
+                  }
+                  ids={formik.values.tag_ids}
+                />
+              </Col>
+            </Form.Group>
+
+            <Form.Group controlId="scenes" as={Row}>
+              {FormUtils.renderLabel({
+                title: intl.formatMessage({ id: "scenes" }),
+                labelProps: {
+                  column: true,
+                  sm: 3,
+                  xl: 12,
+                },
+              })}
+              <Col sm={9} xl={12}>
+                <SceneSelect
+                  scenes={scenes}
+                  onSelect={(items) => onSetScenes(items)}
+                />
+              </Col>
+            </Form.Group>
+          </div>
+          <div className="col-12 col-lg-6 col-xl-12">
+            <Form.Group controlId="details">
+              <Form.Label>
+                <FormattedMessage id="details" />
+              </Form.Label>
+              <Form.Control
+                as="textarea"
+                className="gallery-description text-input"
+                onChange={(newValue: React.ChangeEvent<HTMLTextAreaElement>) =>
+                  formik.setFieldValue("details", newValue.currentTarget.value)
                 }
-                ids={studioId ? [studioId] : []}
+                value={formik.values.details}
               />
-            </Col>
-          </Form.Group>
-
-          <Form.Group controlId="performers" as={Row}>
-            {FormUtils.renderLabel({
-              title: intl.formatMessage({ id: "performers" }),
-              labelProps: {
-                column: true,
-                sm: 3,
-                xl: 12,
-              },
-            })}
-            <Col sm={9} xl={12}>
-              <PerformerSelect
-                isMulti
-                onSelect={(items) =>
-                  setPerformerIds(items.map((item) => item.id))
-                }
-                ids={performerIds}
-              />
-            </Col>
-          </Form.Group>
-
-          <Form.Group controlId="tags" as={Row}>
-            {FormUtils.renderLabel({
-              title: intl.formatMessage({ id: "tags" }),
-              labelProps: {
-                column: true,
-                sm: 3,
-                xl: 12,
-              },
-            })}
-            <Col sm={9} xl={12}>
-              <TagSelect
-                isMulti
-                onSelect={(items) => setTagIds(items.map((item) => item.id))}
-                ids={tagIds}
-              />
-            </Col>
-          </Form.Group>
-
-          <Form.Group controlId="scenes" as={Row}>
-            {FormUtils.renderLabel({
-              title: intl.formatMessage({ id: "scenes" }),
-              labelProps: {
-                column: true,
-                sm: 3,
-                xl: 12,
-              },
-            })}
-            <Col sm={9} xl={12}>
-              <SceneSelect
-                scenes={scenes}
-                onSelect={(items) => setScenes(items)}
-              />
-            </Col>
-          </Form.Group>
+            </Form.Group>
+          </div>
         </div>
-        <div className="col-12 col-lg-6 col-xl-12">
-          <Form.Group controlId="details">
-            <Form.Label>
-              <FormattedMessage id="details" />
-            </Form.Label>
-            <Form.Control
-              as="textarea"
-              className="gallery-description text-input"
-              onChange={(newValue: React.ChangeEvent<HTMLTextAreaElement>) =>
-                setDetails(newValue.currentTarget.value)
-              }
-              value={details}
-            />
-          </Form.Group>
-        </div>
-      </div>
+      </Form>
     </div>
   );
 };