diff --git a/packages/web/package.json b/packages/web/package.json
index 994c4d1..8105b3e 100644
--- a/packages/web/package.json
+++ b/packages/web/package.json
@@ -11,7 +11,8 @@
   },
   "dependencies": {
     "@ns/core": "workspace:*",
-    "@ns/ui-utils": "workspace:*"
+    "@ns/ui-utils": "workspace:*",
+    "lzutf8": "^0.6.3"
   },
   "devDependencies": {
     "@types/node": "^25.5.2",
diff --git a/packages/web/src/components/ComparisonView.tsx b/packages/web/src/components/ComparisonView.tsx
index 7bc516c..a340cae 100644
--- a/packages/web/src/components/ComparisonView.tsx
+++ b/packages/web/src/components/ComparisonView.tsx
@@ -5,6 +5,7 @@ import ArrowRightIcon from 'lucide-solid/icons/arrow-right';
 import ArrowDownIcon from 'lucide-solid/icons/arrow-down';
 import ArrowUpIcon from 'lucide-solid/icons/arrow-up';
 import XIcon from 'lucide-solid/icons/x';
+import ShareIcon from 'lucide-solid/icons/share';
 import FileUpload from './FileUpload';
 
 interface ComparisonViewProps {
@@ -17,6 +18,10 @@ interface ComparisonViewProps {
   onPasteStats: (text: string, name: string) => ComparisonEntry | null;
   onFileLoad: (data: StatsData, raw: Record<string, unknown>) => void;
   onTextLoad: (text: string) => void;
+  onGenerateShareUrl: (left: ComparisonEntry, right: ComparisonEntry) => void;
+  initialLeftId?: number | null;
+  initialRightId?: number | null;
+  onInitialSelectionUsed?: () => void;
 }
 
 const ComparisonView: Component<ComparisonViewProps> = props => {
@@ -47,6 +52,22 @@ const ComparisonView: Component<ComparisonViewProps> = props => {
 
   onMount(() => {
     document.addEventListener('paste', handlePaste);
+
+    if (props.initialLeftId !== null && props.initialLeftId !== undefined) {
+      const left = props.entries.find(e => e.id === props.initialLeftId);
+      if (left) {
+        setLeftEntry(left);
+      }
+    }
+    if (props.initialRightId !== null && props.initialRightId !== undefined) {
+      const right = props.entries.find(e => e.id === props.initialRightId);
+      if (right) {
+        setRightEntry(right);
+      }
+    }
+    if (props.initialLeftId !== null || props.initialRightId !== null) {
+      props.onInitialSelectionUsed?.();
+    }
   });
 
   onCleanup(() => {
@@ -192,6 +213,16 @@ const ComparisonView: Component<ComparisonViewProps> = props => {
               Replace
             </button>
           </div>
+          <Show when={leftEntry() && rightEntry()}>
+            <button
+              class="share-btn"
+              onClick={() => props.onGenerateShareUrl(leftEntry()!, rightEntry()!)}
+              title="Copy share URL to clipboard"
+            >
+              <ShareIcon size={16} />
+              Share
+            </button>
+          </Show>
         </div>
       </Show>
 
diff --git a/packages/web/src/index.tsx b/packages/web/src/index.tsx
index e6c601f..fa56eaa 100644
--- a/packages/web/src/index.tsx
+++ b/packages/web/src/index.tsx
@@ -1,13 +1,59 @@
 import { createSignal, Show, For, onMount, createEffect, lazy } from 'solid-js';
 import { render } from 'solid-js/web';
+import LZUTF8 from 'lzutf8';
 import SaveIcon from 'lucide-solid/icons/save';
 import UploadIcon from 'lucide-solid/icons/upload';
 import Trash2Icon from 'lucide-solid/icons/trash-2';
 import XIcon from 'lucide-solid/icons/x';
+import ShareIcon from 'lucide-solid/icons/link-2';
 import FileUpload from './components/FileUpload';
 import { StatsData, ComparisonEntry, parseStats } from '@ns/core';
 import './styles.css';
 
+type ShareState =
+  | { type: 'analysis'; data: Record<string, unknown>; name: string }
+  | {
+      type: 'compare';
+      left: Record<string, unknown>;
+      right: Record<string, unknown>;
+      leftName: string;
+      rightName: string;
+    };
+
+function encodeShareUrl(state: ShareState): string {
+  const json = JSON.stringify(state);
+  const encoded = LZUTF8.compress(json, { outputEncoding: 'Base64' }) as string;
+  return encoded.replace(/\+/g, '-').replace(/\//g, '_').replace(/=/g, '');
+}
+
+function decodeShareUrl(encoded: string): ShareState | null {
+  try {
+    const base64 = encoded.replace(/-/g, '+').replace(/_/g, '/');
+    const json = LZUTF8.decompress(base64, {
+      inputEncoding: 'Base64',
+      outputEncoding: 'String',
+    }) as string | null;
+    if (!json) {
+      return null;
+    }
+    const state = JSON.parse(json) as ShareState;
+    if (state.type === 'analysis') {
+      if (!state.data || !state.name) {
+        return null;
+      }
+    } else if (state.type === 'compare') {
+      if (!state.left || !state.right || !state.leftName || !state.rightName) {
+        return null;
+      }
+    } else {
+      return null;
+    }
+    return state;
+  } catch {
+    return null;
+  }
+}
+
 function debounce<T extends (...args: Parameters<T>) => ReturnType<T>>(
   fn: T,
   delay: number,
@@ -35,6 +81,9 @@ function App() {
   const [isLoading, setIsLoading] = createSignal(true);
   const [showOverrideModal, setShowOverrideModal] = createSignal(false);
   const [pendingOverrideText, setPendingOverrideText] = createSignal('');
+  const [showShareToast, setShowShareToast] = createSignal(false);
+  const [initialLeftId, setInitialLeftId] = createSignal<number | null>(null);
+  const [initialRightId, setInitialRightId] = createSignal<number | null>(null);
 
   const STORAGE_KEY = 'ns-data';
 
@@ -71,6 +120,51 @@ function App() {
     } catch (e) {
       console.warn('Failed to load saved data:', e);
     }
+
+    const params = new URLSearchParams(window.location.search);
+    const shareParam = params.get('share');
+    if (shareParam) {
+      const shareState = decodeShareUrl(shareParam);
+      if (shareState) {
+        try {
+          if (shareState.type === 'analysis') {
+            const data = parseStats(shareState.data);
+            setCurrentStats(data);
+            setCurrentRaw(shareState.data);
+            setSnapshotName(shareState.name);
+            setView('analysis');
+            window.history.replaceState({}, '', window.location.pathname);
+          } else if (shareState.type === 'compare') {
+            const leftData = parseStats(shareState.left);
+            const rightData = parseStats(shareState.right);
+            const leftId = Date.now();
+            const rightId = Date.now() + 1;
+            const leftEntry: ComparisonEntry = {
+              id: leftId,
+              name: shareState.leftName,
+              data: leftData,
+              raw: shareState.left,
+              timestamp: new Date(),
+            };
+            const rightEntry: ComparisonEntry = {
+              id: rightId,
+              name: shareState.rightName,
+              data: rightData,
+              raw: shareState.right,
+              timestamp: new Date(),
+            };
+            setSnapshots([leftEntry, rightEntry]);
+            setInitialLeftId(leftId);
+            setInitialRightId(rightId);
+            setView('compare');
+            window.history.replaceState({}, '', window.location.pathname);
+          }
+        } catch (e) {
+          console.warn('Failed to load shared data:', e);
+        }
+      }
+    }
+
     setIsLoading(false);
 
     const handleKeyDown = (e: KeyboardEvent) => {
@@ -166,6 +260,20 @@ function App() {
     setShowSaveDialog(false);
   };
 
+  const shareAnalysis = () => {
+    const stats = currentStats();
+    const raw = currentRaw();
+    if (!stats || !raw) return;
+    const name = snapshotName().trim() || `Analysis ${Date.now()}`;
+    const state: ShareState = { type: 'analysis', data: raw, name };
+    const encoded = encodeShareUrl(state);
+    const url = `${window.location.origin}${window.location.pathname}?share=${encoded}`;
+    navigator.clipboard.writeText(url).then(() => {
+      setShowShareToast(true);
+      setTimeout(() => setShowShareToast(false), 2000);
+    });
+  };
+
   const deleteSnapshot = (id: number) => {
     setSnapshots(prev => prev.filter(e => e.id !== id));
   };
@@ -248,6 +356,22 @@ function App() {
     }
   };
 
+  const handleGenerateShareUrl = (left: ComparisonEntry, right: ComparisonEntry) => {
+    const state: ShareState = {
+      type: 'compare',
+      left: left.raw,
+      right: right.raw,
+      leftName: left.name,
+      rightName: right.name,
+    };
+    const encoded = encodeShareUrl(state);
+    const url = `${window.location.origin}${window.location.pathname}?share=${encoded}`;
+    navigator.clipboard.writeText(url).then(() => {
+      setShowShareToast(true);
+      setTimeout(() => setShowShareToast(false), 2000);
+    });
+  };
+
   return (
     <div class="app">
       <header class="header">
@@ -364,6 +488,13 @@ function App() {
               onPasteStats={handlePasteStats}
               onFileLoad={handleCompareFileLoad}
               onTextLoad={handleCompareTextLoad}
+              onGenerateShareUrl={handleGenerateShareUrl}
+              initialLeftId={initialLeftId()}
+              initialRightId={initialRightId()}
+              onInitialSelectionUsed={() => {
+                setInitialLeftId(null);
+                setInitialRightId(null);
+              }}
             />
           </Show>
         </Show>
@@ -429,11 +560,18 @@ function App() {
           >
             <SaveIcon size={20} />
           </button>
+          <button class="action-btn share" onClick={shareAnalysis} title="Share Analysis">
+            <ShareIcon size={20} />
+          </button>
           <button class="action-btn clear" onClick={() => setCurrentStats(null)} title="Load New">
             <UploadIcon size={20} />
           </button>
         </div>
       </Show>
+
+      <Show when={showShareToast()}>
+        <div class="toast">Share URL copied to clipboard!</div>
+      </Show>
     </div>
   );
 }
diff --git a/packages/web/src/styles.css b/packages/web/src/styles.css
index 86e387d..a5c8531 100644
--- a/packages/web/src/styles.css
+++ b/packages/web/src/styles.css
@@ -444,6 +444,16 @@ body {
   transform: scale(1.05);
 }
 
+.action-btn.share {
+  background: var(--accent);
+  color: white;
+}
+
+.action-btn.share:hover {
+  background: var(--accent-hover);
+  transform: scale(1.05);
+}
+
 .action-btn.clear {
   background: var(--bg-secondary);
   color: var(--text-secondary);
@@ -1496,6 +1506,26 @@ body {
   color: white;
 }
 
+.share-btn {
+  display: flex;
+  align-items: center;
+  gap: 0.375rem;
+  height: calc(0.75rem * 2 + 1rem + 2px);
+  padding: 0 0.875rem;
+  background: var(--accent);
+  border: none;
+  color: white;
+  border-radius: 0.375rem;
+  font-size: 0.75rem;
+  font-weight: 500;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.share-btn:hover {
+  background: var(--accent-hover);
+}
+
 .compare-placeholder {
   text-align: center;
   padding: 4rem;
@@ -1768,3 +1798,30 @@ body {
   font-size: 0.75rem;
   color: var(--text-muted);
 }
+
+.toast {
+  position: fixed;
+  bottom: 6rem;
+  left: 50%;
+  transform: translateX(-50%);
+  padding: 0.875rem 1.5rem;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-color);
+  border-radius: 0.5rem;
+  color: var(--text-primary);
+  font-size: 0.875rem;
+  box-shadow: var(--shadow);
+  z-index: 1000;
+  animation: toast-in 0.2s ease;
+}
+
+@keyframes toast-in {
+  from {
+    opacity: 0;
+    transform: translateX(-50%) translateY(0.5rem);
+  }
+  to {
+    opacity: 1;
+    transform: translateX(-50%) translateY(0);
+  }
+}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 6802e54..ef4f390 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -77,6 +77,9 @@ importers:
       '@ns/ui-utils':
         specifier: workspace:*
         version: link:../ui-utils
+      lzutf8:
+        specifier: ^0.6.3
+        version: 0.6.3
     devDependencies:
       '@types/node':
         specifier: ^25.5.2
@@ -920,6 +923,13 @@ packages:
       }
     engines: { node: ^18.18.0 || ^20.9.0 || >=21.1.0 }
 
+  abort-controller@3.0.0:
+    resolution:
+      {
+        integrity: sha512-h8lQ8tacZYnR3vNQTgibj+tODHI5/+l06Au2Pcriv/Gmet0eaj4TwWH41sO9wnHDiQsEj19q0drzdWdeAHtweg==,
+      }
+    engines: { node: '>=6.5' }
+
   acorn-jsx@5.3.2:
     resolution:
       {
@@ -969,6 +979,12 @@ packages:
       }
     engines: { node: 18 || 20 || >=22 }
 
+  base64-js@1.5.1:
+    resolution:
+      {
+        integrity: sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==,
+      }
+
   baseline-browser-mapping@2.10.16:
     resolution:
       {
@@ -992,6 +1008,12 @@ packages:
     engines: { node: ^6 || ^7 || ^8 || ^9 || ^10 || ^11 || ^12 || >=13.7 }
     hasBin: true
 
+  buffer@6.0.3:
+    resolution:
+      {
+        integrity: sha512-FTiCpNxtwiZZHEZbcbTIcZjERVICn9yq/pDFkTl95/AxzD1naBctN7YO68riM/gLSDY7sdrMby8hofADYuuqOA==,
+      }
+
   caniuse-lite@1.0.30001787:
     resolution:
       {
@@ -1155,6 +1177,20 @@ packages:
       }
     engines: { node: '>=0.10.0' }
 
+  event-target-shim@5.0.1:
+    resolution:
+      {
+        integrity: sha512-i/2XbnSz/uxRCU6+NdVJgKWDTM427+MqYbkQzD321DuCQJUqOuJKIA0IM2+W2xtYHdKOmZ4dR6fExsd4SXL+WQ==,
+      }
+    engines: { node: '>=6' }
+
+  events@3.3.0:
+    resolution:
+      {
+        integrity: sha512-mQw+2fkQbALzQ7V0MY0IqdnXNOeTtP4r0lN9z7AAawCXgqea7bDii20AYrIBrFd/Hx0M2Ocz6S111CaFkUcb0Q==,
+      }
+    engines: { node: '>=0.8.x' }
+
   fast-deep-equal@3.1.3:
     resolution:
       {
@@ -1240,6 +1276,12 @@ packages:
         integrity: sha512-DV5Ln36z34NNTDgnz0EWGBLZENelNAtkiFA4kyNOG2tDI6Mz1uSWiq1wAKdyjnJwyDiDO7Fa2SO1CTxPXL8VxA==,
       }
 
+  ieee754@1.2.1:
+    resolution:
+      {
+        integrity: sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==,
+      }
+
   ignore@5.3.2:
     resolution:
       {
@@ -1472,6 +1514,12 @@ packages:
     peerDependencies:
       solid-js: ^1.4.7
 
+  lzutf8@0.6.3:
+    resolution:
+      {
+        integrity: sha512-CAkF9HKrM+XpB0f3DepQ2to2iUEo0zrbh+XgBqgNBc1+k8HMM3u/YSfHI3Dr4GmoTIez2Pr/If1XFl3rU26AwA==,
+      }
+
   merge-anything@5.1.7:
     resolution:
       {
@@ -1588,6 +1636,13 @@ packages:
     engines: { node: '>=14' }
     hasBin: true
 
+  process@0.11.10:
+    resolution:
+      {
+        integrity: sha512-cdGef/drWFoydD1JsMzuFf8100nZl+GT+yacc2bEced5f9Rjk4z+WtFUTBu9PhOi9j/jfmBPu0mMEY4wIdAF8A==,
+      }
+    engines: { node: '>= 0.6.0' }
+
   punycode@2.3.1:
     resolution:
       {
@@ -1595,6 +1650,13 @@ packages:
       }
     engines: { node: '>=6' }
 
+  readable-stream@4.7.0:
+    resolution:
+      {
+        integrity: sha512-oIGGmcpTLwPga8Bn6/Z75SVaH1z5dUut2ibSyAMVhmUggWpmDn2dapB0n7f8nwaSiRtepAsfJyfXIO5DCVAODg==,
+      }
+    engines: { node: ^12.22.0 || ^14.17.0 || >=16.0.0 }
+
   rolldown@1.0.0-rc.15:
     resolution:
       {
@@ -1603,6 +1665,12 @@ packages:
     engines: { node: ^20.19.0 || >=22.12.0 }
     hasBin: true
 
+  safe-buffer@5.2.1:
+    resolution:
+      {
+        integrity: sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==,
+      }
+
   semver@6.3.1:
     resolution:
       {
@@ -1669,6 +1737,12 @@ packages:
       }
     engines: { node: '>=0.10.0' }
 
+  string_decoder@1.3.0:
+    resolution:
+      {
+        integrity: sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==,
+      }
+
   tinyglobby@0.2.16:
     resolution:
       {
@@ -2288,6 +2362,10 @@ snapshots:
       '@typescript-eslint/types': 8.58.1
       eslint-visitor-keys: 5.0.1
 
+  abort-controller@3.0.0:
+    dependencies:
+      event-target-shim: 5.0.1
+
   acorn-jsx@5.3.2(acorn@8.16.0):
     dependencies:
       acorn: 8.16.0
@@ -2319,6 +2397,8 @@ snapshots:
 
   balanced-match@4.0.4: {}
 
+  base64-js@1.5.1: {}
+
   baseline-browser-mapping@2.10.16: {}
 
   brace-expansion@5.0.5:
@@ -2333,6 +2413,11 @@ snapshots:
       node-releases: 2.0.37
       update-browserslist-db: 1.2.3(browserslist@4.28.2)
 
+  buffer@6.0.3:
+    dependencies:
+      base64-js: 1.5.1
+      ieee754: 1.2.1
+
   caniuse-lite@1.0.30001787: {}
 
   convert-source-map@2.0.0: {}
@@ -2459,6 +2544,10 @@ snapshots:
 
   esutils@2.0.3: {}
 
+  event-target-shim@5.0.1: {}
+
+  events@3.3.0: {}
+
   fast-deep-equal@3.1.3: {}
 
   fast-json-stable-stringify@2.1.0: {}
@@ -2496,6 +2585,8 @@ snapshots:
 
   html-entities@2.3.3: {}
 
+  ieee754@1.2.1: {}
+
   ignore@5.3.2: {}
 
   ignore@7.0.5: {}
@@ -2594,6 +2685,10 @@ snapshots:
     dependencies:
       solid-js: 1.9.12
 
+  lzutf8@0.6.3:
+    dependencies:
+      readable-stream: 4.7.0
+
   merge-anything@5.1.7:
     dependencies:
       is-what: 4.1.16
@@ -2649,8 +2744,18 @@ snapshots:
 
   prettier@3.8.1: {}
 
+  process@0.11.10: {}
+
   punycode@2.3.1: {}
 
+  readable-stream@4.7.0:
+    dependencies:
+      abort-controller: 3.0.0
+      buffer: 6.0.3
+      events: 3.3.0
+      process: 0.11.10
+      string_decoder: 1.3.0
+
   rolldown@1.0.0-rc.15:
     dependencies:
       '@oxc-project/types': 0.124.0
@@ -2672,6 +2777,8 @@ snapshots:
       '@rolldown/binding-win32-arm64-msvc': 1.0.0-rc.15
       '@rolldown/binding-win32-x64-msvc': 1.0.0-rc.15
 
+  safe-buffer@5.2.1: {}
+
   semver@6.3.1: {}
 
   semver@7.7.4: {}
@@ -2705,6 +2812,10 @@ snapshots:
 
   source-map-js@1.2.1: {}
 
+  string_decoder@1.3.0:
+    dependencies:
+      safe-buffer: 5.2.1
+
   tinyglobby@0.2.16:
     dependencies:
       fdir: 6.5.0(picomatch@4.0.4)