diff --git a/src/app/Files/_components/Toolbar/ShareModal/ShareModal.tsx b/src/app/Files/_components/Toolbar/ShareModal/ShareModal.tsx
new file mode 100644
index 00000000..74c8c7b0
--- /dev/null
+++ b/src/app/Files/_components/Toolbar/ShareModal/ShareModal.tsx
@@ -0,0 +1,214 @@
+import React, { useCallback, useEffect, useMemo, useState } from 'react';
+import { Alert, AlertTitle, TextField, Stack } from '@mui/material';
+import { Button } from 'reactstrap';
+import { GenericModal, SubmitWrapper } from '@tapis/tapisui-common';
+import { ToolbarModalProps } from '../Toolbar';
+import { Files as Hooks } from '@tapis/tapisui-hooks';
+import { useFilesSelect } from '../../FilesContext';
+
+const DEFAULT_ALLOWED_USES = 1;
+const DEFAULT_VALID_SECONDS = 3600; // 1 hour
+
+const ShareModal: React.FC<ToolbarModalProps> = ({
+  toggle,
+  systemId = '',
+  path = '/',
+}) => {
+  const { selectedFiles, unselect } = useFilesSelect();
+  const { create, isLoading, isError, error, isSuccess, data, reset } =
+    Hooks.PostIts.useCreate();
+
+  const [allowedUses, setAllowedUses] = useState<number>(DEFAULT_ALLOWED_USES);
+  const [validSeconds, setValidSeconds] = useState<number>(
+    DEFAULT_VALID_SECONDS
+  );
+  const [redeemUrl, setRedeemUrl] = useState<string>('');
+  const [copyStatus, setCopyStatus] = useState<'idle' | 'success' | 'error'>(
+    'idle'
+  );
+
+  const selected = selectedFiles[0];
+  const isDir = selected?.type === 'dir';
+  const isMultipleSelection = selectedFiles.length > 1;
+
+  const description = useMemo(() => {
+    if (!selected) return '';
+    const kind = isDir ? 'folder' : 'file';
+    return `You are creating a shareable link for the ${kind} "${selected.name}".`;
+  }, [selected, isDir]);
+
+  useEffect(() => {
+    if (data?.result?.redeemUrl) {
+      // Add download parameter to force download instead of display
+      const url = new URL(data.result.redeemUrl);
+      url.searchParams.set('download', 'true');
+      setRedeemUrl(url.toString());
+    }
+  }, [data]);
+
+  const onGenerate = useCallback(() => {
+    if (!selected) return;
+    setRedeemUrl('');
+    create(
+      {
+        systemId,
+        path: selected.path!,
+        createPostItRequest: {
+          allowedUses,
+          validSeconds,
+        },
+      },
+      {
+        onSuccess: (resp) => {
+          if (resp.result?.redeemUrl) {
+            // Add download parameter to force download instead of display
+            const url = new URL(resp.result.redeemUrl);
+            url.searchParams.set('download', 'true');
+            setRedeemUrl(url.toString());
+          } else {
+            setRedeemUrl('');
+          }
+        },
+      }
+    );
+  }, [create, systemId, selected, allowedUses, validSeconds]);
+
+  const onClose = useCallback(() => {
+    reset();
+    setRedeemUrl('');
+    setCopyStatus('idle');
+    unselect(selectedFiles);
+    toggle();
+  }, [reset, toggle, unselect, selectedFiles]);
+
+  const handleCopyToClipboard = useCallback(async () => {
+    if (!redeemUrl) {
+      setCopyStatus('error');
+      return;
+    }
+
+    try {
+      await navigator.clipboard.writeText(redeemUrl);
+      setCopyStatus('success');
+    } catch (error) {
+      console.error('Error copying to clipboard:', error);
+      setCopyStatus('error');
+    }
+
+    // Reset status after 2 seconds
+    setTimeout(() => {
+      setCopyStatus('idle');
+    }, 2000);
+  }, [redeemUrl]);
+
+  return (
+    <GenericModal
+      size="lg"
+      toggle={onClose}
+      title={'Share via PostIt'}
+      body={
+        <div>
+          {isError && error && (
+            <Alert severity="error" sx={{ mb: 2 }}>
+              <AlertTitle>Error creating link</AlertTitle>
+              {error.message}
+            </Alert>
+          )}
+          {isMultipleSelection && (
+            <Alert severity="warning" sx={{ mb: 2 }}>
+              <AlertTitle>Multiple files selected</AlertTitle>
+              You have selected {selectedFiles.length} items. To share multiple
+              files, select them one at a time or create a folder containing all
+              files.
+            </Alert>
+          )}
+          <p>{description}</p>
+          <Stack direction="row" spacing={2} sx={{ mb: 2 }}>
+            <TextField
+              label="Allowed Uses"
+              type="number"
+              size="small"
+              value={allowedUses}
+              onChange={(e) =>
+                setAllowedUses(Math.max(1, Number(e.target.value)))
+              }
+              inputProps={{ min: 1 }}
+            />
+            <TextField
+              label="Valid Seconds"
+              type="number"
+              size="small"
+              value={validSeconds}
+              onChange={(e) =>
+                setValidSeconds(Math.max(1, Number(e.target.value)))
+              }
+              inputProps={{ min: 1 }}
+            />
+          </Stack>
+          <div style={{ display: 'flex', gap: '8px', alignItems: 'center' }}>
+            <SubmitWrapper
+              isLoading={isLoading}
+              error={null}
+              success={redeemUrl ? 'Link created' : undefined}
+            >
+              <Button
+                color="primary"
+                onClick={onGenerate}
+                disabled={!selected || isMultipleSelection}
+              >
+                Generate Link
+              </Button>
+            </SubmitWrapper>
+            <div style={{ flex: 1 }}>
+              <div className="input-group">
+                <div className="input-group-prepend">
+                  <Button
+                    color={
+                      copyStatus === 'success'
+                        ? 'success'
+                        : copyStatus === 'error'
+                        ? 'danger'
+                        : 'secondary'
+                    }
+                    onClick={handleCopyToClipboard}
+                    disabled={!redeemUrl}
+                    type="button"
+                    style={{
+                      minWidth: '80px',
+                      transition: 'all 0.2s ease',
+                    }}
+                  >
+                    {copyStatus === 'success'
+                      ? '✓ Copied!'
+                      : copyStatus === 'error'
+                      ? '✗ Failed'
+                      : 'Copy'}
+                  </Button>
+                </div>
+                <input
+                  type="text"
+                  value={redeemUrl}
+                  className="form-control"
+                  placeholder="Shareable link will appear here"
+                  readOnly
+                  style={{
+                    backgroundColor: '#f8f9fa',
+                    cursor: 'text',
+                  }}
+                />
+              </div>
+            </div>
+          </div>
+          {isSuccess && redeemUrl && (
+            <Alert severity="success" sx={{ mt: 2 }}>
+              Link created. You can share this URL with users without
+              authentication.
+            </Alert>
+          )}
+        </div>
+      }
+    />
+  );
+};
+
+export default ShareModal;
diff --git a/src/app/Files/_components/Toolbar/ShareModal/index.ts b/src/app/Files/_components/Toolbar/ShareModal/index.ts
new file mode 100644
index 00000000..cb8e5248
--- /dev/null
+++ b/src/app/Files/_components/Toolbar/ShareModal/index.ts
@@ -0,0 +1 @@
+export { default } from './ShareModal';
diff --git a/src/app/Files/_components/Toolbar/Toolbar.tsx b/src/app/Files/_components/Toolbar/Toolbar.tsx
index dc453a72..ed231823 100644
--- a/src/app/Files/_components/Toolbar/Toolbar.tsx
+++ b/src/app/Files/_components/Toolbar/Toolbar.tsx
@@ -11,6 +11,7 @@ import PermissionsModal from './PermissionsModal';
 import DeleteModal from './DeleteModal';
 import CreatePostitModal from './CreatePostitModal';
 import TransferModal from './TransferModal';
+import ShareModal from './ShareModal';
 import { useLocation } from 'react-router-dom';
 import { useFilesSelect } from '../FilesContext';
 import {
@@ -57,6 +58,7 @@ export const ToolbarButton: React.FC<ToolbarButtonProps> = ({
 
 type Op =
   | 'view'
+  | 'share'
   | 'download'
   | 'upload'
   | 'copy'
@@ -172,6 +174,15 @@ const Toolbar: React.FC<ToolbarProps> = ({
       <div id="file-operation-toolbar">
         {pathname !== '/files' && (
           <div className={styles['toolbar-wrapper']}>
+            {show('share', buttons) && (
+              <ToolbarButton
+                text="Share"
+                icon="link"
+                disabled={selectedFiles.length !== 1}
+                onClick={() => setModal('share')}
+                aria-label="Share link"
+              />
+            )}
             {show('view', buttons) && (
               <ToolbarButton
                 text="View"
@@ -338,6 +349,13 @@ const Toolbar: React.FC<ToolbarProps> = ({
                 path={currentPath}
               />
             )}
+            {modal === 'share' && (
+              <ShareModal
+                toggle={toggle}
+                systemId={systemId}
+                path={currentPath}
+              />
+            )}
           </div>
         )}
       </div>