diff --git a/src/App.tsx b/src/App.tsx
index 7d5fee1..43856ee 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -40,6 +40,7 @@ function App() {
         <Routes>
           <Route path="/" element={<LandingPage />} />
           <Route path="/browse" element={<Browse />} />
+          <Route path="/builds/new/:buildHash" element={<BuildNew />} />
           <Route path="/builds/new" element={<BuildNew />} />
           <Route path="/builds/:buildHash" element={<BuildProgress />} />
           <Route path="/profiles/:id" element={<ProfileDetail />} />
@@ -53,6 +54,7 @@ function App() {
           <Route path="/" element={<LandingPage />} />
           <Route path="/browse" element={<Browse />} />
           <Route path="/dashboard" element={<Dashboard />} />
+          <Route path="/builds/new/:buildHash" element={<BuildNew />} />
           <Route path="/builds/new" element={<BuildNew />} />
           <Route path="/builds/:buildHash" element={<BuildProgress />} />
           <Route
diff --git a/src/pages/BuildNew.tsx b/src/pages/BuildNew.tsx
index c763827..1a39de2 100644
--- a/src/pages/BuildNew.tsx
+++ b/src/pages/BuildNew.tsx
@@ -1,7 +1,7 @@
 import { useMutation, useQuery } from 'convex/react'
 import { ChevronDown, ChevronRight, Loader2 } from 'lucide-react'
 import { useEffect, useState } from 'react'
-import { useNavigate } from 'react-router-dom'
+import { useNavigate, useParams } from 'react-router-dom'
 import { toast } from 'sonner'
 import { ModuleToggle } from '@/components/ModuleToggle'
 import { PluginToggle } from '@/components/PluginToggle'
@@ -35,8 +35,13 @@ const DEFAULT_TARGET =
 
 export default function BuildNew() {
   const navigate = useNavigate()
+  const { buildHash: buildHashParam } = useParams<{ buildHash?: string }>()
   const ensureBuildFromConfig = useMutation(api.builds.ensureBuildFromConfig)
   const pluginFlashCounts = useQuery(api.plugins.getAll) ?? {}
+  const sharedBuild = useQuery(
+    api.builds.getByHash,
+    buildHashParam ? { buildHash: buildHashParam } : 'skip'
+  )
 
   const STORAGE_KEY = 'quick_build_target'
   const persistTargetSelection = (targetId: string) => {
@@ -59,6 +64,7 @@ export default function BuildNew() {
   const [errorMessage, setErrorMessage] = useState<string | null>(null)
   const [showModuleOverrides, setShowModuleOverrides] = useState(false)
   const [showPlugins, setShowPlugins] = useState(true)
+  const [isLoadingSharedBuild, setIsLoadingSharedBuild] = useState(false)
 
   useEffect(() => {
     if (!activeCategory && TARGET_CATEGORIES.length > 0) {
@@ -111,6 +117,67 @@ export default function BuildNew() {
     }
   }, [selectedTarget])
 
+  // Pre-populate form from shared build
+  useEffect(() => {
+    if (!buildHashParam) return
+    if (sharedBuild === undefined) {
+      setIsLoadingSharedBuild(true)
+      return
+    }
+    setIsLoadingSharedBuild(false)
+
+    if (!sharedBuild) {
+      setErrorMessage(
+        'Build not found. The shared build may have been deleted.'
+      )
+      toast.error('Build not found', {
+        description: 'The shared build could not be loaded.',
+      })
+      return
+    }
+
+    const config = sharedBuild.config
+
+    // Set target and category
+    if (config.target && TARGETS[config.target]) {
+      setSelectedTarget(config.target)
+      const category = TARGETS[config.target].category || 'Other'
+      if (TARGET_CATEGORIES.includes(category)) {
+        setActiveCategory(category)
+      }
+    }
+
+    // Set version
+    if (
+      config.version &&
+      (VERSIONS as readonly string[]).includes(config.version)
+    ) {
+      setSelectedVersion(config.version as (typeof VERSIONS)[number])
+    }
+
+    // Set module config (already in the correct format)
+    if (config.modulesExcluded) {
+      setModuleConfig(config.modulesExcluded)
+      if (Object.keys(config.modulesExcluded).length > 0) {
+        setShowModuleOverrides(true)
+      }
+    }
+
+    // Set plugin config (convert array to object format)
+    if (config.pluginsEnabled && config.pluginsEnabled.length > 0) {
+      const pluginObj: Record<string, boolean> = {}
+      config.pluginsEnabled.forEach((pluginId) => {
+        // Extract slug from "slug@version" format if present
+        const slug = pluginId.includes('@') ? pluginId.split('@')[0] : pluginId
+        if (slug in registryData) {
+          pluginObj[slug] = true
+        }
+      })
+      setPluginConfig(pluginObj)
+      setShowPlugins(true)
+    }
+  }, [buildHashParam, sharedBuild])
+
   const moduleCount = Object.keys(moduleConfig).length
   const pluginCount = Object.keys(pluginConfig).filter(
     (id) => pluginConfig[id] === true
@@ -176,6 +243,19 @@ export default function BuildNew() {
 
   const isFlashDisabled = !selectedTarget || isFlashing
 
+  if (isLoadingSharedBuild) {
+    return (
+      <div className="min-h-screen bg-slate-950 text-white p-6 md:p-10 flex items-center justify-center">
+        <div className="text-center space-y-4">
+          <Loader2 className="w-8 h-8 animate-spin text-cyan-500 mx-auto" />
+          <p className="text-slate-400">
+            Loading shared build configuration...
+          </p>
+        </div>
+      </div>
+    )
+  }
+
   return (
     <div className="min-h-screen bg-slate-950 text-white p-6 md:p-10">
       <div className="max-w-6xl mx-auto space-y-8">
diff --git a/src/pages/BuildProgress.tsx b/src/pages/BuildProgress.tsx
index 06aebca..57cfec4 100644
--- a/src/pages/BuildProgress.tsx
+++ b/src/pages/BuildProgress.tsx
@@ -1,8 +1,9 @@
 import { useMutation, useQuery } from 'convex/react'
 import { pick } from 'convex-helpers'
-import { ArrowLeft, CheckCircle, Loader2, XCircle } from 'lucide-react'
+import { ArrowLeft, CheckCircle, Loader2, Share2, XCircle } from 'lucide-react'
 import { useState } from 'react'
 import { Link, useParams } from 'react-router-dom'
+import { toast } from 'sonner'
 import { Button } from '@/components/ui/button'
 import { humanizeStatus } from '@/lib/utils'
 import { api } from '../../convex/_generated/api'
@@ -25,6 +26,7 @@ export default function BuildProgress() {
   const [sourceDownloadError, setSourceDownloadError] = useState<string | null>(
     null
   )
+  const [shareUrlCopied, setShareUrlCopied] = useState(false)
 
   if (!buildHash) {
     return (
@@ -129,6 +131,21 @@ export default function BuildProgress() {
       ? `https://github.com/MeshEnvy/configurable-web-flasher/actions/runs/${build.githubRunId}`
       : null
 
+  const shareUrl = `${window.location.origin}/builds/new/${build.buildHash}`
+
+  const handleShare = async () => {
+    try {
+      await navigator.clipboard.writeText(shareUrl)
+      setShareUrlCopied(true)
+      toast.success('Share link copied to clipboard')
+      setTimeout(() => setShareUrlCopied(false), 2000)
+    } catch {
+      toast.error('Failed to copy link', {
+        description: 'Please copy the URL manually',
+      })
+    }
+  }
+
   return (
     <div className="min-h-screen bg-slate-950 text-white p-8">
       <div className="max-w-4xl mx-auto space-y-6">
@@ -140,40 +157,46 @@ export default function BuildProgress() {
             <ArrowLeft className="w-4 h-4 mr-2" />
             Back to Quick Build
           </Link>
-          <p className="text-sm text-slate-500 font-mono break-all">
-            Hash: {build.buildHash}
-          </p>
         </div>
 
         <div className="bg-slate-900/60 rounded-lg border border-slate-800 p-6 space-y-4">
-          <div className="flex items-center gap-4">
-            {getStatusIcon()}
-            <div>
-              <p className="text-sm uppercase tracking-wide text-slate-500">
-                Target
-              </p>
-              <h2 className="text-2xl font-semibold">{targetLabel}</h2>
-              <div className="flex items-center gap-2 text-slate-400 mt-1 text-sm">
-                <span className={getStatusColor()}>
-                  {humanizeStatus(status)}
-                </span>
-                <span>•</span>
-                <span>{new Date(build.updatedAt).toLocaleString()}</span>
-                {githubActionUrl && (
-                  <>
-                    <span>•</span>
-                    <a
-                      href={githubActionUrl}
-                      target="_blank"
-                      rel="noopener noreferrer"
-                      className="text-slate-500 hover:text-slate-300"
-                    >
-                      View run
-                    </a>
-                  </>
-                )}
+          <div className="flex items-center justify-between flex-wrap gap-4">
+            <div className="flex items-center gap-4">
+              {getStatusIcon()}
+              <div>
+                <p className="text-sm uppercase tracking-wide text-slate-500">
+                  Target
+                </p>
+                <h2 className="text-2xl font-semibold">{targetLabel}</h2>
+                <div className="flex items-center gap-2 text-slate-400 mt-1 text-sm">
+                  <span className={getStatusColor()}>
+                    {humanizeStatus(status)}
+                  </span>
+                  <span>•</span>
+                  <span>{new Date(build.updatedAt).toLocaleString()}</span>
+                  {githubActionUrl && (
+                    <>
+                      <span>•</span>
+                      <a
+                        href={githubActionUrl}
+                        target="_blank"
+                        rel="noopener noreferrer"
+                        className="text-slate-500 hover:text-slate-300"
+                      >
+                        View run
+                      </a>
+                    </>
+                  )}
+                </div>
               </div>
             </div>
+            <Button
+              onClick={handleShare}
+              className="bg-green-600 hover:bg-green-700"
+            >
+              <Share2 className="w-4 h-4 mr-2" />
+              {shareUrlCopied ? 'Copied!' : 'Share Build'}
+            </Button>
           </div>
 
           {status !== 'success' && status !== 'failure' && (