diff --git a/web/package.json b/web/package.json
index b5e9362a..b5b4b23c 100644
--- a/web/package.json
+++ b/web/package.json
@@ -43,6 +43,7 @@
     "pdfjs-dist": "^5.7.284",
     "radix-ui": "^1.4.3",
     "react": "^19.0.0",
+    "react-day-picker": "^10.0.1",
     "react-dom": "^19.0.0",
     "react-qr-code": "^2.0.18",
     "react-router": "^7.15.1",
diff --git a/web/pnpm-lock.yaml b/web/pnpm-lock.yaml
index 62c13ffb..ffc874fd 100644
--- a/web/pnpm-lock.yaml
+++ b/web/pnpm-lock.yaml
@@ -100,6 +100,9 @@ importers:
       react:
         specifier: ^19.0.0
         version: 19.2.4
+      react-day-picker:
+        specifier: ^10.0.1
+        version: 10.0.1(@types/react@19.2.14)(react@19.2.4)
       react-dom:
         specifier: ^19.0.0
         version: 19.2.4(react@19.2.4)
@@ -375,6 +378,9 @@ packages:
     resolution: {integrity: sha512-QxULHAm7cNu72w97JUNCBFODFaXpbDg+dP8b/oWFAZ2MTRppA3U00Y2L1HqaS4J6yBqxwa/Y3nMBaxVKbB/NsA==}
     engines: {node: '>=20.19.0'}
 
+  '@date-fns/tz@1.5.0':
+    resolution: {integrity: sha512-lwYN/vDPeNRULcepoE/LO2Pgx+7/RV+S9ARfbc9lr2DtGkOD7pAiruHvbR1RX3Qyf6ja47EWJDMsNK5vK08DJg==}
+
   '@dnd-kit/accessibility@3.1.1':
     resolution: {integrity: sha512-2P+YgaXF+gRsIihwwY1gCsQSYnu9Zyj2py8kY5fFvUM1qm2WA2u639R6YNVfU4GWr+ZM5mqEsfHZZLoRONbemw==}
     peerDependencies:
@@ -2014,6 +2020,9 @@ packages:
     resolution: {integrity: sha512-23XHcCF+coGYevirZceTVD7NdJOqVn+49IHyxgszm+JIiHLoB2TkmPtsYkNWT1pvRSGkc35L6NHs0yHkN2SumA==}
     engines: {node: ^20.19.0 || ^22.12.0 || >=24.0.0}
 
+  date-fns@4.4.0:
+    resolution: {integrity: sha512-+1UMbeh68lH1SegH83CGWwpb6OHHbpSgr3+s5Eww5M4CAgswBpoWS0AjTOfEJ33HiYKz1hdj/KTFprzXHmq/6w==}
+
   debug@4.4.3:
     resolution: {integrity: sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA==}
     engines: {node: '>=6.0'}
@@ -2704,6 +2713,16 @@ packages:
       '@types/react-dom':
         optional: true
 
+  react-day-picker@10.0.1:
+    resolution: {integrity: sha512-eNh6BlwcYInWaJtRv18mXQ06Ys/H6rdTZAnTaSdOYJuTpwP1JMCHNd1FDRadA+gbeinq+psdULN5Xnowy9mV8w==}
+    engines: {node: '>=18'}
+    peerDependencies:
+      '@types/react': '>=16.8.0'
+      react: '>=16.8.0'
+    peerDependenciesMeta:
+      '@types/react':
+        optional: true
+
   react-dom@19.2.4:
     resolution: {integrity: sha512-AXJdLo8kgMbimY95O2aKQqsz2iWi9jMgKJhRBAxECE4IFxfcazB2LmzloIoibJI3C12IlY20+KFaLv+71bUJeQ==}
     peerDependencies:
@@ -3335,6 +3354,8 @@ snapshots:
 
   '@csstools/css-tokenizer@4.0.0': {}
 
+  '@date-fns/tz@1.5.0': {}
+
   '@dnd-kit/accessibility@3.1.1(react@19.2.4)':
     dependencies:
       react: 19.2.4
@@ -4890,6 +4911,8 @@ snapshots:
     transitivePeerDependencies:
       - '@noble/hashes'
 
+  date-fns@4.4.0: {}
+
   debug@4.4.3:
     dependencies:
       ms: 2.1.3
@@ -5508,6 +5531,14 @@ snapshots:
       '@types/react': 19.2.14
       '@types/react-dom': 19.2.3(@types/react@19.2.14)
 
+  react-day-picker@10.0.1(@types/react@19.2.14)(react@19.2.4):
+    dependencies:
+      '@date-fns/tz': 1.5.0
+      date-fns: 4.4.0
+      react: 19.2.4
+    optionalDependencies:
+      '@types/react': 19.2.14
+
   react-dom@19.2.4(react@19.2.4):
     dependencies:
       react: 19.2.4
diff --git a/web/src/components/DateTimePicker.tsx b/web/src/components/DateTimePicker.tsx
new file mode 100644
index 00000000..5b3c7af0
--- /dev/null
+++ b/web/src/components/DateTimePicker.tsx
@@ -0,0 +1,104 @@
+import { useState } from "react";
+import { CalendarIcon } from "lucide-react";
+
+import { Button } from "@/components/ui/button";
+import { Calendar } from "@/components/ui/calendar";
+import { Input } from "@/components/ui/input";
+import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
+import { formatDateTime } from "@/lib/datetime";
+import { cn } from "@/lib/utils";
+
+/**
+ * Calendar + time-of-day picker that speaks the same `YYYY-MM-DDTHH:mm` local
+ * string format as a native `datetime-local` input, so it can drop into
+ * existing filter state without conversions.
+ */
+export function DateTimePicker({
+  id,
+  value,
+  onChange,
+  placeholder = "Any time",
+  className,
+}: {
+  id?: string;
+  value: string;
+  onChange: (value: string) => void;
+  placeholder?: string;
+  className?: string;
+}) {
+  const [open, setOpen] = useState(false);
+  const selected = parseLocalDateTime(value);
+  const time = selected ? value.slice(11, 16) : "";
+
+  function handleSelectDay(day: Date | undefined) {
+    if (!day) {
+      onChange("");
+      return;
+    }
+    onChange(`${toLocalDateString(day)}T${time || "00:00"}`);
+  }
+
+  function handleTimeChange(nextTime: string) {
+    const day = selected ?? new Date();
+    onChange(`${toLocalDateString(day)}T${nextTime || "00:00"}`);
+  }
+
+  return (
+    <Popover open={open} onOpenChange={setOpen}>
+      <PopoverTrigger asChild>
+        <Button
+          id={id}
+          type="button"
+          variant="outline"
+          className={cn(
+            "w-full justify-start bg-transparent px-3 font-normal",
+            !selected && "text-muted-foreground",
+            className,
+          )}
+        >
+          <CalendarIcon className="size-4 opacity-60" aria-hidden="true" />
+          <span className="truncate">
+            {selected ? formatDateTime(selected, { seconds: false }) : placeholder}
+          </span>
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent className="w-auto p-0" align="start">
+        <Calendar
+          mode="single"
+          selected={selected}
+          defaultMonth={selected}
+          onSelect={handleSelectDay}
+        />
+        <div className="flex items-center gap-2 border-t p-3">
+          <Input
+            type="time"
+            aria-label="Time of day"
+            value={time}
+            onChange={(event) => handleTimeChange(event.target.value)}
+            className="h-8"
+          />
+          <Button
+            type="button"
+            variant="ghost"
+            size="sm"
+            disabled={!selected}
+            onClick={() => onChange("")}
+          >
+            Clear
+          </Button>
+        </div>
+      </PopoverContent>
+    </Popover>
+  );
+}
+
+function parseLocalDateTime(value: string) {
+  if (!value) return undefined;
+  const date = new Date(value);
+  return Number.isNaN(date.getTime()) ? undefined : date;
+}
+
+function toLocalDateString(day: Date) {
+  const pad = (part: number) => String(part).padStart(2, "0");
+  return `${day.getFullYear()}-${pad(day.getMonth() + 1)}-${pad(day.getDate())}`;
+}
diff --git a/web/src/components/ui/calendar.tsx b/web/src/components/ui/calendar.tsx
new file mode 100644
index 00000000..b2d3d753
--- /dev/null
+++ b/web/src/components/ui/calendar.tsx
@@ -0,0 +1,67 @@
+import type { ComponentProps } from "react";
+import { ChevronDown, ChevronLeft, ChevronRight, ChevronUp } from "lucide-react";
+import { DayPicker } from "react-day-picker";
+
+import { buttonVariants } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+
+function Calendar({
+  className,
+  classNames,
+  showOutsideDays = true,
+  ...props
+}: ComponentProps<typeof DayPicker>) {
+  return (
+    <DayPicker
+      showOutsideDays={showOutsideDays}
+      className={cn("p-3", className)}
+      classNames={{
+        months: "relative flex flex-col gap-4 sm:flex-row",
+        month: "flex w-full flex-col gap-4",
+        month_caption: "flex h-7 items-center justify-center",
+        caption_label: "text-sm font-medium",
+        nav: "absolute inset-x-0 top-0 flex items-center justify-between",
+        button_previous: cn(
+          buttonVariants({ variant: "outline" }),
+          "size-7 bg-transparent p-0 opacity-60 hover:opacity-100",
+        ),
+        button_next: cn(
+          buttonVariants({ variant: "outline" }),
+          "size-7 bg-transparent p-0 opacity-60 hover:opacity-100",
+        ),
+        month_grid: "w-full border-collapse",
+        weekdays: "flex",
+        weekday: "text-muted-foreground w-8 text-[0.8rem] font-normal",
+        week: "mt-2 flex w-full",
+        day: "relative size-8 p-0 text-center text-sm",
+        day_button: cn(
+          buttonVariants({ variant: "ghost" }),
+          "size-8 p-0 font-normal aria-selected:opacity-100",
+        ),
+        selected:
+          "rounded-md [&>button]:bg-primary [&>button]:text-primary-foreground [&>button]:hover:bg-primary [&>button]:hover:text-primary-foreground",
+        today: "rounded-md [&>button:not([aria-selected])]:bg-accent",
+        outside: "text-muted-foreground",
+        disabled: "text-muted-foreground opacity-50",
+        hidden: "invisible",
+        ...classNames,
+      }}
+      components={{
+        Chevron: ({ orientation, className: chevronClassName }) => {
+          const Icon =
+            orientation === "left"
+              ? ChevronLeft
+              : orientation === "right"
+                ? ChevronRight
+                : orientation === "up"
+                  ? ChevronUp
+                  : ChevronDown;
+          return <Icon className={cn("size-4", chevronClassName)} aria-hidden="true" />;
+        },
+      }}
+      {...props}
+    />
+  );
+}
+
+export { Calendar };
diff --git a/web/src/hooks/queries/admin/diagnostics.test.ts b/web/src/hooks/queries/admin/diagnostics.test.ts
index 9af2572b..214daa38 100644
--- a/web/src/hooks/queries/admin/diagnostics.test.ts
+++ b/web/src/hooks/queries/admin/diagnostics.test.ts
@@ -1,17 +1,30 @@
+import { createElement, type ReactNode } from "react";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { act, renderHook } from "@testing-library/react";
 import { beforeEach, describe, expect, it, vi } from "vitest";
 
 import type { DiagnosticReport } from "@/api/types";
 
 const mocks = vi.hoisted(() => ({
+  api: vi.fn(),
   apiResponse: vi.fn(),
+  toastError: vi.fn(),
+  toastSuccess: vi.fn(),
 }));
 
 vi.mock("@/api/client", () => ({
-  api: vi.fn(),
+  api: mocks.api,
   apiResponse: mocks.apiResponse,
 }));
 
-import { downloadDiagnosticReport } from "./diagnostics";
+vi.mock("sonner", () => ({
+  toast: {
+    error: mocks.toastError,
+    success: mocks.toastSuccess,
+  },
+}));
+
+import { downloadDiagnosticReport, useUpdateDiagnosticsUploadsEnabled } from "./diagnostics";
 
 const report = {
   id: "83fd3186-bd4f-42e1-8285-58107c503685",
@@ -20,7 +33,10 @@ const report = {
 
 describe("downloadDiagnosticReport", () => {
   beforeEach(() => {
+    mocks.api.mockReset();
     mocks.apiResponse.mockReset();
+    mocks.toastError.mockReset();
+    mocks.toastSuccess.mockReset();
   });
 
   it("streams the bundle through the proxy download path", async () => {
@@ -62,3 +78,68 @@ describe("downloadDiagnosticReport", () => {
     );
   });
 });
+
+describe("useUpdateDiagnosticsUploadsEnabled", () => {
+  beforeEach(() => {
+    mocks.api.mockReset();
+    mocks.apiResponse.mockReset();
+    mocks.toastError.mockReset();
+    mocks.toastSuccess.mockReset();
+  });
+
+  function createWrapper(queryClient: QueryClient) {
+    return function Wrapper({ children }: { children: ReactNode }) {
+      return createElement(QueryClientProvider, { client: queryClient }, children);
+    };
+  }
+
+  it.each([
+    [true, "true", "Client diagnostic uploads enabled"],
+    [false, "false", "Client diagnostic uploads disabled"],
+  ] as const)("persists %s and refreshes diagnostics status", async (enabled, value, message) => {
+    const queryClient = new QueryClient({
+      defaultOptions: { mutations: { retry: false }, queries: { retry: false } },
+    });
+    const invalidateQueries = vi.spyOn(queryClient, "invalidateQueries");
+    mocks.api.mockResolvedValue({ key: "diagnostics.uploads_enabled", value });
+    const { result } = renderHook(() => useUpdateDiagnosticsUploadsEnabled(), {
+      wrapper: createWrapper(queryClient),
+    });
+
+    await act(async () => {
+      await result.current.mutateAsync(enabled);
+    });
+
+    expect(mocks.api).toHaveBeenCalledWith("/admin/settings/diagnostics.uploads_enabled", {
+      method: "PUT",
+      body: JSON.stringify({ value }),
+    });
+    expect(invalidateQueries).toHaveBeenCalledWith({ queryKey: ["diagnostics", "status"] });
+    expect(invalidateQueries).toHaveBeenCalledWith({ queryKey: ["admin", "serverSettings"] });
+    expect(mocks.toastSuccess).toHaveBeenCalledWith(message);
+  });
+
+  it("surfaces storage validation errors", async () => {
+    const queryClient = new QueryClient({
+      defaultOptions: { mutations: { retry: false }, queries: { retry: false } },
+    });
+    const error = new Error("diagnostics uploads require configured private object storage");
+    mocks.api.mockRejectedValue(error);
+    const { result } = renderHook(() => useUpdateDiagnosticsUploadsEnabled(), {
+      wrapper: createWrapper(queryClient),
+    });
+    let caught: unknown;
+
+    await act(async () => {
+      try {
+        await result.current.mutateAsync(true);
+      } catch (mutationError) {
+        caught = mutationError;
+      }
+    });
+
+    expect(caught).toBe(error);
+    expect(mocks.toastError).toHaveBeenCalledWith(error.message);
+    expect(mocks.toastSuccess).not.toHaveBeenCalled();
+  });
+});
diff --git a/web/src/hooks/queries/admin/diagnostics.ts b/web/src/hooks/queries/admin/diagnostics.ts
index 7d3b26d0..535d8a2a 100644
--- a/web/src/hooks/queries/admin/diagnostics.ts
+++ b/web/src/hooks/queries/admin/diagnostics.ts
@@ -3,6 +3,7 @@ import { toast } from "sonner";
 
 import { api, apiResponse } from "@/api/client";
 import type {
+  AdminSettingUpdateResponse,
   DiagnosticReport,
   DiagnosticReportListResponse,
   DiagnosticReportSummary,
@@ -38,6 +39,31 @@ export function useDiagnosticsStatus() {
   });
 }
 
+export function useUpdateDiagnosticsUploadsEnabled() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (enabled: boolean) =>
+      api<AdminSettingUpdateResponse>("/admin/settings/diagnostics.uploads_enabled", {
+        method: "PUT",
+        body: JSON.stringify({ value: enabled ? "true" : "false" }),
+      }),
+    onSuccess: async (_result, enabled) => {
+      await Promise.all([
+        queryClient.invalidateQueries({ queryKey: adminKeys.diagnosticStatus() }),
+        queryClient.invalidateQueries({ queryKey: adminKeys.serverSettings() }),
+      ]);
+      toast.success(
+        enabled ? "Client diagnostic uploads enabled" : "Client diagnostic uploads disabled",
+      );
+    },
+    onError: (error) => {
+      toast.error(
+        error instanceof Error ? error.message : "Failed to update client diagnostic uploads",
+      );
+    },
+  });
+}
+
 export function useDiagnosticReports(params: AdminDiagnosticsQuery) {
   const query = toQueryString(params);
   return useQuery({
diff --git a/web/src/pages/AdminDiagnostics.test.tsx b/web/src/pages/AdminDiagnostics.test.tsx
new file mode 100644
index 00000000..d1ad76ad
--- /dev/null
+++ b/web/src/pages/AdminDiagnostics.test.tsx
@@ -0,0 +1,133 @@
+import { render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { MemoryRouter } from "react-router";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import type { DiagnosticAvailabilityStatus, DiagnosticStatus } from "@/api/types";
+
+const mocks = vi.hoisted(() => ({
+  mutateUploadsEnabled: vi.fn(),
+  useDiagnosticsStatus: vi.fn(),
+  useUpdateDiagnosticsUploadsEnabled: vi.fn(),
+}));
+
+vi.mock("@/hooks/useDateTimeFormat", () => ({
+  useDateTimeFormat: vi.fn(),
+}));
+
+vi.mock("@/hooks/queries/admin/diagnostics", () => ({
+  downloadDiagnosticReport: vi.fn(),
+  useDeleteDiagnosticReport: () => ({ isPending: false, mutate: vi.fn() }),
+  useDiagnosticReport: () => ({ data: undefined, isError: false, isLoading: false }),
+  useDiagnosticReports: () => ({
+    data: { reports: [] },
+    isError: false,
+    isFetching: false,
+    isLoading: false,
+  }),
+  useDiagnosticsStatus: () => mocks.useDiagnosticsStatus(),
+  useUpdateDiagnosticsUploadsEnabled: () => mocks.useUpdateDiagnosticsUploadsEnabled(),
+}));
+
+import AdminDiagnostics from "./AdminDiagnostics";
+
+function diagnosticStatus(status: DiagnosticAvailabilityStatus): DiagnosticStatus {
+  return {
+    status,
+    server_instance_id: "server-id",
+    accepted_schema_versions: [1],
+    max_bundle_bytes: 10 * 1024 * 1024,
+    max_manifest_bytes: 64 * 1024,
+    retention_days: 30,
+    consent_notice_version: 1,
+  };
+}
+
+function renderPage() {
+  return render(
+    <MemoryRouter>
+      <AdminDiagnostics />
+    </MemoryRouter>,
+  );
+}
+
+describe("AdminDiagnostics uploads toggle", () => {
+  beforeEach(() => {
+    mocks.mutateUploadsEnabled.mockReset();
+    mocks.useDiagnosticsStatus.mockReset();
+    mocks.useUpdateDiagnosticsUploadsEnabled.mockReset();
+    mocks.useDiagnosticsStatus.mockReturnValue({
+      data: diagnosticStatus("disabled"),
+      isError: false,
+      isLoading: false,
+    });
+    mocks.useUpdateDiagnosticsUploadsEnabled.mockReturnValue({
+      isPending: false,
+      mutate: mocks.mutateUploadsEnabled,
+    });
+  });
+
+  it("renders disabled status off and submits enablement without changing optimistically", async () => {
+    const user = userEvent.setup();
+    renderPage();
+    const toggle = screen.getByRole("switch", { name: "Client uploads" });
+
+    expect(toggle).not.toBeChecked();
+    expect(screen.getByText(/Use the Client uploads toggle above to enable them/)).toBeVisible();
+
+    await user.click(toggle);
+
+    expect(mocks.mutateUploadsEnabled).toHaveBeenCalledWith(true);
+    expect(toggle).not.toBeChecked();
+  });
+
+  it("renders available status on and submits disablement", async () => {
+    mocks.useDiagnosticsStatus.mockReturnValue({
+      data: diagnosticStatus("available"),
+      isError: false,
+      isLoading: false,
+    });
+    const user = userEvent.setup();
+    renderPage();
+    const toggle = screen.getByRole("switch", { name: "Client uploads" });
+
+    expect(toggle).toBeChecked();
+
+    await user.click(toggle);
+
+    expect(mocks.mutateUploadsEnabled).toHaveBeenCalledWith(false);
+  });
+
+  it("keeps storage-unavailable status on while showing the warning", () => {
+    mocks.useDiagnosticsStatus.mockReturnValue({
+      data: diagnosticStatus("storage_unavailable"),
+      isError: false,
+      isLoading: false,
+    });
+    renderPage();
+
+    expect(screen.getByRole("switch", { name: "Client uploads" })).toBeChecked();
+    expect(screen.getByText(/Client diagnostic storage is currently unavailable/)).toBeVisible();
+  });
+
+  it("disables the toggle while an update is pending", () => {
+    mocks.useUpdateDiagnosticsUploadsEnabled.mockReturnValue({
+      isPending: true,
+      mutate: mocks.mutateUploadsEnabled,
+    });
+    renderPage();
+
+    expect(screen.getByRole("switch", { name: "Client uploads" })).toBeDisabled();
+  });
+
+  it("disables the toggle when status is unavailable", () => {
+    mocks.useDiagnosticsStatus.mockReturnValue({
+      data: undefined,
+      isError: true,
+      isLoading: false,
+    });
+    renderPage();
+
+    expect(screen.getByRole("switch", { name: "Client uploads" })).toBeDisabled();
+  });
+});
diff --git a/web/src/pages/AdminDiagnostics.tsx b/web/src/pages/AdminDiagnostics.tsx
index b681c576..bf06a8f7 100644
--- a/web/src/pages/AdminDiagnostics.tsx
+++ b/web/src/pages/AdminDiagnostics.tsx
@@ -1,11 +1,12 @@
 import { useEffect, useMemo, useState } from "react";
-import type { FormEvent, KeyboardEvent } from "react";
+import type { FormEvent, KeyboardEvent, ReactNode } from "react";
 import { Link, useSearchParams } from "react-router";
 import { Bug, Download, ExternalLink, FilterX, Trash2, TriangleAlert } from "lucide-react";
 import { toast } from "sonner";
 
 import type { DiagnosticReport, DiagnosticReportState, DiagnosticReportSummary } from "@/api/types";
 import { ConfirmDialog } from "@/components/ConfirmDialog";
+import { DateTimePicker } from "@/components/DateTimePicker";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
@@ -32,6 +33,8 @@ import {
   TableHeader,
   TableRow,
 } from "@/components/ui/table";
+import { Switch } from "@/components/ui/switch";
+import { cn } from "@/lib/utils";
 import { useDateTimeFormat } from "@/hooks/useDateTimeFormat";
 import {
   downloadDiagnosticReport,
@@ -39,6 +42,7 @@ import {
   useDiagnosticReport,
   useDiagnosticReports,
   useDiagnosticsStatus,
+  useUpdateDiagnosticsUploadsEnabled,
 } from "@/hooks/queries/admin/diagnostics";
 import { formatDateTime as formatPreferredDateTime } from "@/lib/datetime";
 
@@ -95,10 +99,12 @@ export default function AdminDiagnostics() {
   }, [activeCursor, searchParams]);
 
   const status = useDiagnosticsStatus();
+  const updateUploadsEnabled = useUpdateDiagnosticsUploadsEnabled();
   const reports = useDiagnosticReports(query);
   const selectedReport = useDiagnosticReport(selectedID);
   const deleteReport = useDeleteDiagnosticReport();
   const hasAppliedFilters = FILTER_KEYS.some((key) => searchParams.has(key));
+  const uploadsEnabled = status.data !== undefined && status.data.status !== "disabled";
 
   function setFilter<Key extends keyof FilterDraft>(key: Key, value: FilterDraft[Key]) {
     setFilters((current) => ({ ...current, [key]: value }));
@@ -170,12 +176,25 @@ export default function AdminDiagnostics() {
             Review client crash reports, device context, and correlated playback sessions.
           </p>
         </div>
-        <div className="text-right">
-          <div className="text-muted-foreground text-xs font-medium tracking-[0.2em] uppercase">
-            Retention
+        <div className="flex items-center gap-5 sm:gap-6">
+          <div className="flex items-center gap-2">
+            <Label htmlFor="diagnostics-uploads-enabled" className="text-muted-foreground text-sm">
+              Client uploads
+            </Label>
+            <Switch
+              id="diagnostics-uploads-enabled"
+              checked={uploadsEnabled}
+              onCheckedChange={(enabled) => updateUploadsEnabled.mutate(enabled)}
+              disabled={!status.data || status.isError || updateUploadsEnabled.isPending}
+            />
           </div>
-          <div className="text-sm">
-            {status.data ? `${status.data.retention_days} days` : "Loading..."}
+          <div className="text-right">
+            <div className="text-muted-foreground text-xs font-medium tracking-[0.2em] uppercase">
+              Retention
+            </div>
+            <div className="text-sm">
+              {status.data ? `${status.data.retention_days} days` : "Loading..."}
+            </div>
           </div>
         </div>
       </div>
@@ -185,24 +204,22 @@ export default function AdminDiagnostics() {
       )}
 
       <form
-        className="surface-panel-subtle grid gap-3 rounded-2xl p-4 md:grid-cols-2 xl:grid-cols-[110px_150px_170px_1fr_1fr_180px_auto] xl:items-end"
+        className="surface-panel-subtle flex flex-wrap items-end gap-x-3 gap-y-4 rounded-2xl p-4"
         onSubmit={applyFilters}
       >
-        <div className="space-y-2">
-          <Label htmlFor="diagnostics-user">User</Label>
+        <FilterField label="User" htmlFor="diagnostics-user" className="w-24">
           <Input
             id="diagnostics-user"
             type="number"
             min={1}
             step={1}
             inputMode="numeric"
-            placeholder="42"
+            placeholder="Any"
             value={filters.userID}
             onChange={(event) => setFilter("userID", event.target.value)}
           />
-        </div>
-        <div className="space-y-2">
-          <Label htmlFor="diagnostics-platform">Platform</Label>
+        </FilterField>
+        <FilterField label="Platform" htmlFor="diagnostics-platform" className="min-w-36 flex-1">
           <Select value={filters.platform} onValueChange={(value) => setFilter("platform", value)}>
             <SelectTrigger id="diagnostics-platform" className="w-full">
               <SelectValue />
@@ -215,9 +232,8 @@ export default function AdminDiagnostics() {
               <SelectItem value="tvos">tvOS</SelectItem>
             </SelectContent>
           </Select>
-        </div>
-        <div className="space-y-2">
-          <Label htmlFor="diagnostics-type">Report type</Label>
+        </FilterField>
+        <FilterField label="Report type" htmlFor="diagnostics-type" className="min-w-36 flex-1">
           <Select
             value={filters.reportType}
             onValueChange={(value) => setFilter("reportType", value)}
@@ -235,36 +251,31 @@ export default function AdminDiagnostics() {
               <SelectItem value="manual">Manual</SelectItem>
             </SelectContent>
           </Select>
-        </div>
-        <div className="space-y-2">
-          <Label htmlFor="diagnostics-from">From</Label>
-          <Input
+        </FilterField>
+        <FilterField label="From" htmlFor="diagnostics-from" className="min-w-44 flex-1">
+          <DateTimePicker
             id="diagnostics-from"
-            type="datetime-local"
             value={filters.from}
-            onChange={(event) => setFilter("from", event.target.value)}
+            onChange={(value) => setFilter("from", value)}
           />
-        </div>
-        <div className="space-y-2">
-          <Label htmlFor="diagnostics-to">To</Label>
-          <Input
+        </FilterField>
+        <FilterField label="To" htmlFor="diagnostics-to" className="min-w-44 flex-1">
+          <DateTimePicker
             id="diagnostics-to"
-            type="datetime-local"
             value={filters.to}
-            onChange={(event) => setFilter("to", event.target.value)}
+            onChange={(value) => setFilter("to", value)}
           />
-        </div>
-        <div className="space-y-2">
-          <Label htmlFor="diagnostics-short-id">Short ID</Label>
+        </FilterField>
+        <FilterField label="Short ID" htmlFor="diagnostics-short-id" className="min-w-32 flex-1">
           <Input
             id="diagnostics-short-id"
-            className="font-mono text-xs uppercase"
+            className="font-mono uppercase placeholder:normal-case"
             placeholder="Exact ID"
             value={filters.shortID}
             onChange={(event) => setFilter("shortID", event.target.value)}
           />
-        </div>
-        <div className="flex gap-2 md:col-span-2 xl:col-span-1">
+        </FilterField>
+        <div className="ml-auto flex gap-2">
           <Button type="submit">Apply</Button>
           <Button
             type="button"
@@ -413,6 +424,30 @@ export default function AdminDiagnostics() {
   );
 }
 
+function FilterField({
+  label,
+  htmlFor,
+  className,
+  children,
+}: {
+  label: string;
+  htmlFor: string;
+  className?: string;
+  children: ReactNode;
+}) {
+  return (
+    <div className={cn("flex flex-col gap-1.5", className)}>
+      <Label
+        htmlFor={htmlFor}
+        className="text-muted-foreground text-[11px] font-medium tracking-wide uppercase"
+      >
+        {label}
+      </Label>
+      {children}
+    </div>
+  );
+}
+
 function DiagnosticReportRow({
   report,
   onSelect,
@@ -576,7 +611,7 @@ function DiagnosticReportDetail({
 function FeatureStatusBanner({ status }: { status: "disabled" | "storage_unavailable" }) {
   const message =
     status === "disabled"
-      ? "Client diagnostic uploads are currently disabled. Reports from when the feature was enabled may still be available below."
+      ? "Client diagnostic uploads are currently disabled. Use the Client uploads toggle above to enable them. Reports from when the feature was enabled may still be available below."
       : "Client diagnostic storage is currently unavailable. Existing report metadata may still be available below.";
   return (
     <div className="border-border bg-muted/30 text-muted-foreground flex items-start gap-3 rounded-xl border px-4 py-3 text-sm">