diff --git a/frontend/js/main.js b/frontend/js/main.js
index e77a76d..7243047 100644
--- a/frontend/js/main.js
+++ b/frontend/js/main.js
@@ -4883,16 +4883,19 @@ async function shareRideContext() {
   let token = (localStorage.getItem("baldav_live_token") || "").trim();
   if (!url || !token) { appAlert("Сначала задай адрес и токен трансляции в профиле"); return; }
   let shareUrl = url.endsWith("/push") ? url.slice(0, -5) + "/share" : url.replace(/\/[^/]*$/, "/share");
-  let track = (GPS.recording.points || []).map(p => [+p.lat, +p.lon]);
+  // Round coords to 5 decimals (~1 m) — enough to draw, and cuts the payload a lot
+  // (full doubles are ~2x longer). Roads can be big; this keeps the POST reasonable.
+  let r5 = v => Math.round((+v) * 1e5) / 1e5;
+  let track = (GPS.recording.points || []).map(p => [r5(p.lat), r5(p.lon)]);
   let route = [];
   try {
     let rid = localStorage.getItem("baldav_active_route");
-    if (rid) { let r = await DB.getRoute(rid); if (r && r.points) route = r.points.map(p => [+p.lat, +p.lon]); }
+    if (rid) { let r = await DB.getRoute(rid); if (r && r.points) route = r.points.map(p => [r5(p.lat), r5(p.lon)]); }
   } catch (e) {}
   let roads = [];
   try {
     let segs = buildRoadSegments(await DB.getRoadPoints());
-    roads = segs.map(s => ({ p: s.pts.map(q => [+q.lat, +q.lon]), t: s.atype || "b" }));
+    roads = segs.map(s => ({ p: s.pts.map(q => [r5(q.lat), r5(q.lon)]), t: s.atype || "b" }));
   } catch (e) {}
   showToast("Отдаю смотрящему...");
   try {