diff --git a/sia-share/main.go b/sia-share/main.go
index 73fdf85..b28011e 100644
--- a/sia-share/main.go
+++ b/sia-share/main.go
@@ -427,9 +427,27 @@ func (h *handler) get(w http.ResponseWriter, r *http.Request) {
 		notFound(w)
 		return
 	}
+	if wantsPage(r) {
+		filePage(w, l, l.Files[0])
+		return
+	}
 	h.stream(w, r, l, l.Files[0])
 }
 
+// A person opening a single-file link in a browser gets a page with the
+// file and where it came from; players, <img> tags, download tools and the
+// page's own preview (?raw) get the file itself.
+func wantsPage(r *http.Request) bool {
+	q := r.URL.Query()
+	if r.Method != http.MethodGet || q.Has("raw") || q.Has("dl") {
+		return false
+	}
+	if d := r.Header.Get("Sec-Fetch-Dest"); d != "" {
+		return d == "document"
+	}
+	return strings.Contains(r.Header.Get("Accept"), "text/html")
+}
+
 func notFound(w http.ResponseWriter) {
 	w.Header().Set("content-type", "text/html; charset=utf-8")
 	w.WriteHeader(404)
@@ -503,7 +521,11 @@ func (h *handler) stream(w http.ResponseWriter, r *http.Request, l *link, f file
 	hd.Set("content-type", ct)
 	hd.Set("accept-ranges", "bytes")
 	hd.Set("content-length", strconv.FormatInt(length, 10))
-	hd.Set("content-disposition", mime.FormatMediaType("inline", map[string]string{"filename": f.Name}))
+	disp := "inline"
+	if r.URL.Query().Has("dl") {
+		disp = "attachment"
+	}
+	hd.Set("content-disposition", mime.FormatMediaType(disp, map[string]string{"filename": f.Name}))
 	hd.Set("content-security-policy", "sandbox")
 	hd.Set("x-content-type-options", "nosniff")
 	hd.Set("cache-control", "public, max-age=300")
@@ -543,6 +565,52 @@ func fmtSize(n int64) string {
 	return fmt.Sprintf("%.1f %s", f, units[i])
 }
 
+// Where a visitor goes from a shared link: the Pithos site, the Pithos app
+// and Theseus Navigator (which opens pithos.sia itself).
+const pageLinks = `<nav class="more"><a href="https://silentmode.st/pithos/">pithos.sia</a><a href="https://silentmode.st/pithos/#get">Get Pithos</a><a href="https://silentmode.st/theseus">Get Theseus Navigator</a></nav>`
+
+const pageStyle = `body{margin:0;background:#0b100e;color:#e6ece9;font:15px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif}main{max-width:860px;margin:0 auto;padding:28px 18px 120px}
+a{color:#3ddc97;text-decoration:none}a:hover{text-decoration:underline}.owner{color:#8e9c96;font-size:13px}h1{font-size:20px;margin:4px 0 18px;font-weight:600;overflow-wrap:anywhere}
+footer{color:#5f6b66;font-size:12.5px;margin-top:22px;padding-top:14px;border-top:1px solid rgba(255,255,255,.06)}.more{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:8px;font-size:14px}`
+
+func mediaKind(n string) string {
+	switch strings.ToLower(path.Ext(n)) {
+	case ".png", ".jpg", ".jpeg", ".gif", ".webp", ".avif":
+		return "img"
+	case ".mp3", ".m4a", ".aac", ".ogg", ".oga", ".opus", ".flac", ".wav":
+		return "audio"
+	case ".mp4", ".webm", ".mov", ".m4v":
+		return "video"
+	}
+	return ""
+}
+
+func filePage(w http.ResponseWriter, l *link, f file) {
+	preview := ""
+	switch mediaKind(f.Name) {
+	case "img":
+		preview = `<img class="pv" src="?raw=1" alt="">`
+	case "audio":
+		preview = `<audio class="pv" src="?raw=1" controls preload="metadata"></audio>`
+	case "video":
+		preview = `<video class="pv" src="?raw=1" controls preload="metadata"></video>`
+	}
+	w.Header().Set("content-type", "text/html; charset=utf-8")
+	w.Header().Set("content-security-policy", "default-src 'none'; style-src 'unsafe-inline'; img-src 'self'; media-src 'self'; frame-ancestors 'none'")
+	w.Header().Set("x-content-type-options", "nosniff")
+	w.Header().Set("cache-control", "no-store")
+	name := html.EscapeString(f.Name)
+	fmt.Fprintf(w, `<!doctype html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1">
+<title>%s · shared from Sia</title>
+<style>%s
+.pv{display:block;max-width:100%%;max-height:70vh;margin:0 0 18px;border-radius:10px;background:#121a17}audio.pv{width:100%%}
+.acts{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.btn{display:inline-block;padding:9px 18px;border-radius:8px;font-weight:600}.btn.pri{background:#3ddc97;color:#06231a}.btn.sec{border:1px solid rgba(255,255,255,.14);color:#e6ece9}.sz{color:#8e9c96;font-size:13px}</style></head>
+<body><main><div class="owner">Shared from Sia</div><h1>%s</h1>%s
+<div class="acts"><a class="btn pri" href="?dl=1">Download</a><a class="btn sec" href="?raw=1">Open</a><span class="sz">%s</span></div>
+<footer>Stored on the Sia network and shared with Pithos, private storage you own.%s</footer></main></body></html>`,
+		name, pageStyle, name, preview, fmtSize(f.Size), pageLinks)
+}
+
 func folderPage(w http.ResponseWriter, l *link) {
 	kind := func(n string) string {
 		switch strings.ToLower(path.Ext(n)) {
@@ -577,9 +645,9 @@ a{color:#3ddc97;text-decoration:none}a:hover{text-decoration:underline}.owner{co
 ul{list-style:none;padding:0;margin:0;border:1px solid rgba(255,255,255,.08);border-radius:10px;overflow:hidden}li{display:flex;align-items:center;gap:10px;padding:9px 14px;border-top:1px solid rgba(255,255,255,.06);min-width:0}li:first-child{border-top:none}
 li a{flex:1;min-width:0;overflow-wrap:anywhere}li img{width:44px;height:44px;object-fit:cover;border-radius:6px;flex:none}.sz{color:#8e9c96;font-size:13px;white-space:nowrap}
 .play{flex:none;width:32px;height:32px;border-radius:50%%;border:0;background:#3ddc97;color:#06231a;cursor:pointer;font-size:13px}
-#player{position:fixed;left:0;right:0;bottom:0;background:#121a17;border-top:1px solid rgba(255,255,255,.08);padding:10px 16px;display:none}#player.on{display:block}#player audio,#player video{width:100%%;max-height:50vh}footer{color:#5f6b66;font-size:12.5px;margin-top:18px}</style></head>
+#player{position:fixed;left:0;right:0;bottom:0;background:#121a17;border-top:1px solid rgba(255,255,255,.08);padding:10px 16px;display:none}#player.on{display:block}#player audio,#player video{width:100%%;max-height:50vh}footer{color:#5f6b66;font-size:12.5px;margin-top:22px;padding-top:14px;border-top:1px solid rgba(255,255,255,.06)}.more{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:8px;font-size:14px}</style></head>
 <body><main><div class="owner">Shared from Sia</div><h1>%s</h1><ul>%s</ul>
-<footer>Stored on the Sia network and shared with Pithos.</footer></main><div id="player"></div>
+<footer>Stored on the Sia network and shared with Pithos, private storage you own.%s</footer></main><div id="player"></div>
 <script>document.addEventListener('click',function(e){var b=e.target.closest('.play');if(!b)return;var p=document.getElementById('player');var m=document.createElement(b.dataset.kind);m.src=b.dataset.src;m.controls=true;m.autoplay=true;p.innerHTML='';p.appendChild(m);p.className='on';});</script>
-</body></html>`, html.EscapeString(l.Name), html.EscapeString(l.Name), rows.String())
+</body></html>`, html.EscapeString(l.Name), html.EscapeString(l.Name), rows.String(), pageLinks)
 }
diff --git a/sia-share/main_test.go b/sia-share/main_test.go
index f119cad..9e7b61d 100644
--- a/sia-share/main_test.go
+++ b/sia-share/main_test.go
@@ -1,6 +1,9 @@
 package main
 
-import "testing"
+import (
+	"net/http/httptest"
+	"testing"
+)
 
 func TestParseRange(t *testing.T) {
 	cases := []struct {
@@ -35,3 +38,30 @@ func TestCleanName(t *testing.T) {
 		}
 	}
 }
+
+func TestWantsPage(t *testing.T) {
+	cases := []struct {
+		url, dest, accept string
+		want              bool
+	}{
+		{"/sia/x", "document", "", true},
+		{"/sia/x", "image", "", false},
+		{"/sia/x", "iframe", "", false},
+		{"/sia/x?raw=1", "document", "", false},
+		{"/sia/x?dl=1", "document", "", false},
+		{"/sia/x", "", "text/html,application/xhtml+xml", true},
+		{"/sia/x", "", "*/*", false},
+	}
+	for _, c := range cases {
+		r := httptest.NewRequest("GET", c.url, nil)
+		if c.dest != "" {
+			r.Header.Set("Sec-Fetch-Dest", c.dest)
+		}
+		if c.accept != "" {
+			r.Header.Set("Accept", c.accept)
+		}
+		if got := wantsPage(r); got != c.want {
+			t.Errorf("%s dest=%q accept=%q: got %v want %v", c.url, c.dest, c.accept, got, c.want)
+		}
+	}
+}
diff --git a/ui/app.css b/ui/app.css
index 5100fde..8948b71 100644
--- a/ui/app.css
+++ b/ui/app.css
@@ -489,3 +489,13 @@ a.brand:hover > span:first-of-type { color: var(--accent); }
 /* Toasts with actions (Share: Open / Manage) */
 .toast.action { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
 .toast.action > span { flex: 1 1 auto; }
+
+/* share menu */
+.menu.share-menu { width: min(21rem, calc(100vw - 16px)); padding: 0.5rem; }
+.share-busy { display: flex; align-items: center; gap: 0.5rem; padding: 0.5rem; color: var(--muted); }
+.share-link { display: flex; gap: 0.375rem; padding: 0.125rem 0.125rem 0.375rem; }
+.share-link input { flex: 1; min-width: 0; font-size: 0.75rem; padding: 0.3125rem 0.5rem; }
+.share-sep { height: 1px; background: var(--border); margin: 0.25rem 0; }
+.share-menu button[role=menuitem] { display: flex; align-items: center; gap: 0.625rem; width: 100%; }
+.share-ic { width: 1.125rem; text-align: center; color: var(--muted); }
+.share-note { margin: 0.375rem 0.5rem 0.125rem; }
diff --git a/ui/app.js b/ui/app.js
index f3d85de..a2d0891 100644
--- a/ui/app.js
+++ b/ui/app.js
@@ -1343,6 +1343,26 @@ function viewSwitch(page, current, onChange) {
       onclick: () => { try { localStorage.setItem(`pithos.view.${page}`, key); } catch {} onChange(key); } }, icon)));
 }
 
+// A pop-up under (or above) an anchor; closes on an outside click or Escape.
+// Returns { menu, done, place } so the caller can refill and re-place it.
+function popMenu(anchor, children, cls = '') {
+  document.querySelectorAll('.menu').forEach((m) => m.remove());
+  const menu = h('div', { class: `menu ${cls}`.trim(), role: 'menu' }, children);
+  function done() { menu.remove(); document.removeEventListener('mousedown', away, true); document.removeEventListener('keydown', esc, true); }
+  function away(ev) { if (!menu.contains(ev.target) && !anchor.contains(ev.target)) done(); }
+  function esc(ev) { if (ev.key === 'Escape') { ev.stopPropagation(); done(); anchor.focus(); } }
+  function place() {
+    const r = anchor.getBoundingClientRect();
+    const w = menu.offsetWidth, ht = menu.offsetHeight;
+    menu.style.left = Math.max(8, Math.min(r.right - w, innerWidth - w - 8)) + 'px';
+    menu.style.top = (r.bottom + 4 + ht > innerHeight - 8 ? Math.max(8, r.top - ht - 4) : r.bottom + 4) + 'px';
+  }
+  document.body.append(menu);
+  place();
+  setTimeout(() => { document.addEventListener('mousedown', away, true); document.addEventListener('keydown', esc, true); }, 0);
+  return { menu, done, place };
+}
+
 // "⋯" menu for one item: [label, action, kind?] rows; closes on any outside click.
 function itemMenu(items) {
   const btn = h('button', { type: 'button', class: 'btn small more', title: 'More', 'aria-label': 'More actions', 'aria-haspopup': 'menu' }, '⋯');
@@ -1373,7 +1393,7 @@ const ICONS = {
   share: '<svg viewBox="0 0 16 16" width="15" height="15" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round"><path d="M6.6 9.4a2.6 2.6 0 0 0 3.7 0l2.2-2.2a2.6 2.6 0 0 0-3.7-3.7l-.9.9"/><path d="M9.4 6.6a2.6 2.6 0 0 0-3.7 0L3.5 8.8a2.6 2.6 0 0 0 3.7 3.7l.9-.9"/></svg>',
 };
 function iconButton(name, label, run) {
-  const b = h('button', { type: 'button', class: 'btn small icon', title: label, 'aria-label': label, onclick: (e) => { e.stopPropagation(); run(); } });
+  const b = h('button', { type: 'button', class: 'btn small icon', title: label, 'aria-label': label, onclick: (e) => { e.stopPropagation(); run(e); } });
   b.innerHTML = ICONS[name]; // fixed markup above, never user data
   return b;
 }
@@ -1741,7 +1761,7 @@ function objectBrowser(head, body, user, bucket, prefix, userSel) {
     } catch { put(accessChip, 'Access'); }
   }
   paintAccess();
-  const shareHere = () => (isHosted() ? folderShareDialog(user, bucket, prefix).then(paintAccess) : quickShare({ prefix }));
+  const shareHere = () => (isHosted() ? folderShareDialog(user, bucket, prefix).then(paintAccess) : quickShare({ prefix }, shareBtn));
   const shareBtn = h('button', { type: 'button', class: 'chip', title: prefix ? 'Share this folder' : 'Share this drive', onclick: shareHere }, '🔗 Share');
   put(head, 
     h('div', { class: 'stack' }, h('div', { class: 'row crumb-row' }, crumbs, accessChip, shareBtn), accountLine()),
@@ -1793,7 +1813,7 @@ function objectBrowser(head, body, user, bucket, prefix, userSel) {
     // Narrow screens: Download and Share as icons beside the ⋯ menu.
     const quickIcons = (o) => h('span', { class: 'narrow-only icon-row' },
       iconButton('download', 'Download', () => downloadObject(o.key)),
-      iconButton('share', 'Copy public link', () => quickShare({ key: o.key })));
+      iconButton('share', 'Share', (e) => quickShare({ key: o.key }, e.currentTarget)));
 
     if (mode === 'details') {
       put(card, h('table', { class: 'files' },
@@ -1810,7 +1830,7 @@ function objectBrowser(head, body, user, bucket, prefix, userSel) {
             h('td', { class: 'hide-sm muted' }, fmtDate(o.modified)),
             h('td', { class: 'actions', onclick: stop },
               h('span', { class: 'wide-only' }, h('button', { class: 'btn small', onclick: () => downloadObject(o.key) }, 'Download'), ' ',
-                h('button', { class: 'btn small', title: 'Copy a public link', onclick: () => quickShare({ key: o.key }) }, 'Share'), ' '),
+                h('button', { class: 'btn small', title: 'Share a public link', 'aria-haspopup': 'menu', onclick: (e) => { e.stopPropagation(); quickShare({ key: o.key }, e.currentTarget); } }, 'Share'), ' '),
               quickIcons(o), fileMenu(o)))))),
         more);
     } else if (mode === 'list') {
@@ -2048,11 +2068,22 @@ function objectBrowser(head, body, user, bucket, prefix, userSel) {
   // drive, or a new one valid for 10 years (a Sia share link is signed with
   // an end date; Switch off ends it sooner), copied at once. Manage opens
   // the full list. Drives on Silent Mode keep their own Share dialog.
-  async function quickShare({ key, prefix }) {
+  // With an anchor (a Share button) it opens the share menu instead.
+  async function quickShare({ key, prefix }, anchor) {
     if (isHosted()) return key != null ? hostedShare(key) : folderShareDialog(user, bucket, prefix);
     const folder = key == null;
     const mine = (l) => l.bucket === bucket && (folder ? l.key == null && (l.prefix ?? null) === prefix : l.key === key);
     const manage = () => (folder ? siaFolderLink(prefix) : share(key));
+    if (anchor) {
+      const getLink = async () => {
+        let links = [];
+        try { links = await api('GET', '/api/sia-links'); } catch {}
+        return links.filter(mine).filter((l) => l.until * 1000 > Date.now()).sort((a, b) => b.until - a.until)[0]
+          || api('POST', `${base}/sia-link`, { key, prefix, days: 3650 });
+      };
+      const title = String(key ?? prefix ?? '').replace(/\/+$/, '').split('/').pop() || bucket;
+      return shareMenu(anchor, getLink, { title, manage, folder });
+    }
     const busy = h('div', { class: 'toast' }, h('span', { class: 'spinner' }), ' Making the public link…');
     $('#toasts').append(busy);
     try {
@@ -2072,6 +2103,43 @@ function objectBrowser(head, body, user, bucket, prefix, userSel) {
     }
   }
 
+  // Share menu: the public link with Copy, then a few places to send it.
+  // The link is made (or the existing one reused) behind a spinner.
+  function shareMenu(anchor, getLink, { title, manage, folder }) {
+    const pop = popMenu(anchor, [h('div', { class: 'share-busy' }, h('span', { class: 'spinner' }), ' Making the public link…')], 'share-menu');
+    const options = () => { pop.done(); manage(); };
+    getLink().then((link) => {
+      if (!pop.menu.isConnected) return;
+      const url = link.url;
+      const text = `${title} on Pithos`;
+      const enc = encodeURIComponent;
+      const field = h('input', { type: 'text', readonly: true, value: url, 'aria-label': 'Public link', onfocus: (e) => e.target.select() });
+      const copyBtn = h('button', { type: 'button', class: 'btn small primary', onclick: async () => {
+        try { await navigator.clipboard.writeText(url); copyBtn.textContent = 'Copied ✓'; setTimeout(() => { copyBtn.textContent = 'Copy'; }, 1800); }
+        catch { field.focus(); field.select(); }
+      } }, 'Copy');
+      const send = (href) => () => { pop.done(); openLink(href); };
+      const row = (icon, label, run) => h('button', { type: 'button', role: 'menuitem', onclick: run }, h('span', { class: 'share-ic', 'aria-hidden': 'true' }, icon), label);
+      put(pop.menu,
+        h('div', { class: 'share-link' }, field, copyBtn),
+        h('div', { class: 'share-sep', role: 'separator' }),
+        row('↗', 'Open link', send(url)),
+        row('𝕏', 'Post on X', send(`https://x.com/intent/post?text=${enc(text)}&url=${enc(url)}`)),
+        row('✈', 'Send on Telegram', send(`https://t.me/share/url?url=${enc(url)}&text=${enc(text)}`)),
+        row('✆', 'Send on WhatsApp', send(`https://wa.me/?text=${enc(`${text}: ${url}`)}`)),
+        h('div', { class: 'share-sep', role: 'separator' }),
+        row('⚙', folder ? 'Manage public links…' : 'Link options…', options),
+        h('p', { class: 'small muted share-note' }, 'Anyone with the link can open it, for 10 years unless you switch it off.'));
+      pop.place();
+      copyBtn.focus();
+    }).catch((err) => {
+      if (!pop.menu.isConnected) return;
+      const msg = folder && /a file is required/.test(err.message) ? 'Pithos is still running its previous engine. Restart Theseus to finish the update, then try again.' : err.message;
+      put(pop.menu, h('p', { class: 'error share-note' }, msg), h('button', { type: 'button', role: 'menuitem', onclick: options }, 'Link options…'));
+      pop.place();
+    });
+  }
+
   // The links already made for this file, folder or drive come first, each
   // with Copy, Open and Switch off; then one line to make a new one.
   function siaLinkBlock({ key, prefix, heading = false }) {