diff --git a/src/components/CacheEventImportSettings/index.tsx b/src/components/CacheEventImportSettings/index.tsx
new file mode 100644
index 00000000..4a5f1f9f
--- /dev/null
+++ b/src/components/CacheEventImportSettings/index.tsx
@@ -0,0 +1,218 @@
+import { Button } from '@/components/ui/button'
+import { Checkbox } from '@/components/ui/checkbox'
+import { Label } from '@/components/ui/label'
+import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs'
+import { Textarea } from '@/components/ui/textarea'
+import {
+  CACHE_IMPORT_MAX_JSONL_FILE_BYTES,
+  formatCacheImportLimits,
+  parseJsonlCacheImportText,
+  parsePastedCacheImportJson
+} from '@/lib/cache-event-import'
+import { showPublishingError, showSimplePublishSuccess } from '@/lib/publishing-feedback'
+import { useNostr } from '@/providers/NostrProvider'
+import client from '@/services/client.service'
+import type { Event } from 'nostr-tools'
+import { Upload } from 'lucide-react'
+import { useCallback, useId, useRef, useState } from 'react'
+import { useTranslation } from 'react-i18next'
+import { toast } from 'sonner'
+
+async function ingestImportedEvents(
+  events: Event[],
+  broadcast: boolean,
+  accountPubkey: string | null,
+  t: (key: string) => string
+): Promise<{ imported: number; broadcastOk: number; broadcastFailed: number }> {
+  const unique: Event[] = []
+  const seen = new Set<string>()
+  for (const ev of events) {
+    const id = ev.id.toLowerCase()
+    if (seen.has(id)) continue
+    seen.add(id)
+    unique.push(ev)
+    client.addEventToCache(ev, { explicitNoteLookupHexId: id })
+  }
+
+  let broadcastOk = 0
+  let broadcastFailed = 0
+  if (broadcast && accountPubkey && unique.length > 0) {
+    const urls = await client.getMailboxStackWriteUrlsForRepublish(accountPubkey)
+    if (!urls.length) {
+      throw new Error(t('No mailbox cache or HTTP write relays configured'))
+    }
+    for (const ev of unique) {
+      try {
+        const result = await client.publishEvent(urls, ev, { skipOutboxRetry: true })
+        if (result.successCount >= 1) broadcastOk++
+        else broadcastFailed++
+      } catch {
+        broadcastFailed++
+      }
+    }
+  }
+
+  return { imported: unique.length, broadcastOk, broadcastFailed }
+}
+
+export default function CacheEventImportSettings() {
+  const { t } = useTranslation()
+  const { pubkey: accountPubkey } = useNostr()
+  const broadcastId = useId()
+  const fileInputRef = useRef<HTMLInputElement>(null)
+  const [pasteText, setPasteText] = useState('')
+  const [broadcastAfterImport, setBroadcastAfterImport] = useState(false)
+  const [busy, setBusy] = useState(false)
+
+  const runImport = useCallback(
+    async (events: Event[], issueCount: number) => {
+      if (events.length === 0) {
+        toast.error(t('cacheImport.noValidEvents'))
+        return
+      }
+      if (broadcastAfterImport && !accountPubkey) {
+        toast.error(t('Log in to broadcast'))
+        return
+      }
+      setBusy(true)
+      const loadingId = toast.loading(t('cacheImport.importing'))
+      try {
+        const stats = await ingestImportedEvents(events, broadcastAfterImport, accountPubkey ?? null, t)
+        if (issueCount > 0) {
+          toast.warning(
+            t('cacheImport.partialWithIssues', {
+              imported: stats.imported,
+              skipped: issueCount
+            })
+          )
+        }
+        const successMessage =
+          broadcastAfterImport && accountPubkey
+            ? t('cacheImport.doneWithBroadcast', {
+                imported: stats.imported,
+                broadcastOk: stats.broadcastOk,
+                broadcastFailed: stats.broadcastFailed
+              })
+            : t('cacheImport.done', { count: stats.imported })
+        toast.dismiss(loadingId)
+        showSimplePublishSuccess(successMessage)
+        setPasteText('')
+      } catch (err) {
+        toast.dismiss(loadingId)
+        showPublishingError(
+          t('cacheImport.failed', {
+            error: err instanceof Error ? err.message : String(err)
+          })
+        )
+      } finally {
+        setBusy(false)
+      }
+    },
+    [accountPubkey, broadcastAfterImport, t]
+  )
+
+  const handleImportPaste = () => {
+    const { events, issues } = parsePastedCacheImportJson(pasteText)
+    void runImport(events, issues.length)
+  }
+
+  const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0]
+    e.target.value = ''
+    if (!file) return
+    if (!file.name.toLowerCase().endsWith('.jsonl')) {
+      toast.error(t('cacheImport.jsonlOnly'))
+      return
+    }
+    if (file.size > CACHE_IMPORT_MAX_JSONL_FILE_BYTES) {
+      toast.error(
+        t('cacheImport.fileTooLarge', {
+          mb: Math.round(CACHE_IMPORT_MAX_JSONL_FILE_BYTES / (1024 * 1024))
+        })
+      )
+      return
+    }
+    void (async () => {
+      setBusy(true)
+      try {
+        const text = await file.text()
+        const { events, issues } = parseJsonlCacheImportText(text)
+        await runImport(events, issues.length)
+      } catch (err) {
+        toast.error(
+          t('cacheImport.failed', {
+            error: err instanceof Error ? err.message : String(err)
+          })
+        )
+      } finally {
+        setBusy(false)
+      }
+    })()
+  }
+
+  return (
+    <div className="space-y-4 border-t border-border pt-6">
+      <h3 className="text-base font-medium">{t('cacheImport.sectionTitle')}</h3>
+      <p className="text-sm text-muted-foreground">{t('cacheImport.sectionBlurb')}</p>
+      <p className="text-xs text-muted-foreground">{formatCacheImportLimits()}</p>
+
+      <div className="flex items-start gap-2">
+        <Checkbox
+          id={broadcastId}
+          checked={broadcastAfterImport}
+          onCheckedChange={(v) => setBroadcastAfterImport(v === true)}
+          disabled={!accountPubkey || busy}
+        />
+        <Label htmlFor={broadcastId} className="text-sm font-normal leading-snug cursor-pointer">
+          {t('cacheImport.broadcastLabel')}
+          {!accountPubkey ? (
+            <span className="block text-xs text-muted-foreground">{t('Log in to broadcast')}</span>
+          ) : null}
+        </Label>
+      </div>
+
+      <Tabs defaultValue="paste" className="w-full">
+        <TabsList className="w-full">
+          <TabsTrigger value="paste" className="flex-1">
+            {t('cacheImport.tabPaste')}
+          </TabsTrigger>
+          <TabsTrigger value="file" className="flex-1">
+            {t('cacheImport.tabFile')}
+          </TabsTrigger>
+        </TabsList>
+        <TabsContent value="paste" className="space-y-3 mt-3">
+          <Textarea
+            className="min-h-[140px] font-mono text-xs"
+            placeholder={t('cacheImport.pastePlaceholder')}
+            value={pasteText}
+            onChange={(e) => setPasteText(e.target.value)}
+            disabled={busy}
+          />
+          <Button type="button" disabled={busy || !pasteText.trim()} onClick={handleImportPaste}>
+            {t('cacheImport.importButton')}
+          </Button>
+        </TabsContent>
+        <TabsContent value="file" className="space-y-3 mt-3">
+          <input
+            ref={fileInputRef}
+            type="file"
+            accept=".jsonl,application/jsonl,text/jsonl"
+            className="hidden"
+            onChange={handleFileChange}
+            disabled={busy}
+          />
+          <Button
+            type="button"
+            variant="secondary"
+            disabled={busy}
+            onClick={() => fileInputRef.current?.click()}
+          >
+            <Upload className="mr-2 h-4 w-4" />
+            {t('cacheImport.chooseJsonl')}
+          </Button>
+          <p className="text-xs text-muted-foreground">{t('cacheImport.fileHint')}</p>
+        </TabsContent>
+      </Tabs>
+    </div>
+  )
+}
diff --git a/src/i18n/locales/de.ts b/src/i18n/locales/de.ts
index 1d4fbefe..23e273b1 100644
--- a/src/i18n/locales/de.ts
+++ b/src/i18n/locales/de.ts
@@ -658,6 +658,25 @@ export default {
     "eventArchive.off": "off",
     "eventArchive.apply": "Apply cache settings",
     "eventArchive.appliedToast": "Cache settings saved. Session memory updated.",
+    "cacheImport.sectionTitle": "Events importieren",
+    "cacheImport.sectionBlurb":
+      "Signierte Nostr-Events per JSON (einfügen) oder .jsonl-Export in den lokalen Cache laden. Events müssen die Signaturprüfung bestehen.",
+    "cacheImport.broadcastLabel": "Nach dem Import an meine Schreib-Relays senden",
+    "cacheImport.tabPaste": "JSON einfügen",
+    "cacheImport.tabFile": ".jsonl hochladen",
+    "cacheImport.pastePlaceholder": "Ein Event-Objekt oder ein JSON-Array von Events einfügen…",
+    "cacheImport.importButton": "In Cache importieren",
+    "cacheImport.chooseJsonl": ".jsonl-Datei wählen",
+    "cacheImport.fileHint": "Ein JSON-Event pro Zeile (NDJSON). Doppelte Event-IDs im selben Import werden übersprungen.",
+    "cacheImport.jsonlOnly": "Bitte eine .jsonl-Datei wählen",
+    "cacheImport.fileTooLarge": "Datei ist größer als {{mb}} MB",
+    "cacheImport.noValidEvents": "Keine gültigen signierten Events zum Importieren",
+    "cacheImport.importing": "Events werden importiert…",
+    "cacheImport.done": "{{count}} Event(s) in den Cache importiert",
+    "cacheImport.doneWithBroadcast":
+      "{{imported}} Event(s) importiert; auf {{broadcastOk}} Relay(s) gesendet ({{broadcastFailed}} fehlgeschlagen)",
+    "cacheImport.partialWithIssues": "{{imported}} Event(s) importiert; {{skipped}} Zeile(n) übersprungen",
+    "cacheImport.failed": "Import fehlgeschlagen: {{error}}",
     "Paste or drop media files to upload": "Füge Medien-Dateien ein oder ziehe sie hierher, um sie hochzuladen",
     Preview: "Vorschau",
     "You are about to publish an event signed by [{{eventAuthorName}}]. You are currently logged in as [{{currentUsername}}]. Are you sure?": "Du bist dabei, ein Ereignis zu veröffentlichen, das von [{{eventAuthorName}}] signiert wurde. Du bist derzeit als [{{currentUsername}}] angemeldet. Bist du sicher?",
diff --git a/src/i18n/locales/en.ts b/src/i18n/locales/en.ts
index 679cc04f..a3911965 100644
--- a/src/i18n/locales/en.ts
+++ b/src/i18n/locales/en.ts
@@ -677,6 +677,25 @@ export default {
     "eventArchive.off": "off",
     "eventArchive.apply": "Apply cache settings",
     "eventArchive.appliedToast": "Cache settings saved. Session memory updated.",
+    "cacheImport.sectionTitle": "Import events",
+    "cacheImport.sectionBlurb":
+      "Add signed Nostr events to your local cache from JSON (paste) or a .jsonl export. Events must pass signature verification.",
+    "cacheImport.broadcastLabel": "Broadcast to my write relays after import",
+    "cacheImport.tabPaste": "Paste JSON",
+    "cacheImport.tabFile": "Upload .jsonl",
+    "cacheImport.pastePlaceholder": "Paste one event object, or a JSON array of events…",
+    "cacheImport.importButton": "Import to cache",
+    "cacheImport.chooseJsonl": "Choose .jsonl file",
+    "cacheImport.fileHint": "One JSON event per line (NDJSON). Duplicate event ids in the same import are skipped.",
+    "cacheImport.jsonlOnly": "Please choose a .jsonl file",
+    "cacheImport.fileTooLarge": "File is larger than {{mb}} MB",
+    "cacheImport.noValidEvents": "No valid signed events to import",
+    "cacheImport.importing": "Importing events…",
+    "cacheImport.done": "Imported {{count}} event(s) into cache",
+    "cacheImport.doneWithBroadcast":
+      "Imported {{imported}} event(s); broadcast accepted on {{broadcastOk}} relay(s) ({{broadcastFailed}} failed)",
+    "cacheImport.partialWithIssues": "Imported {{imported}} event(s); {{skipped}} line(s) skipped",
+    "cacheImport.failed": "Import failed: {{error}}",
     "Paste or drop media files to upload": "Paste or drop media files to upload",
     Preview: "Preview",
     "You are about to publish an event signed by [{{eventAuthorName}}]. You are currently logged in as [{{currentUsername}}]. Are you sure?": "You are about to publish an event signed by [{{eventAuthorName}}]. You are currently logged in as [{{currentUsername}}]. Are you sure?",
diff --git a/src/lib/cache-event-import.test.ts b/src/lib/cache-event-import.test.ts
new file mode 100644
index 00000000..feb75d8a
--- /dev/null
+++ b/src/lib/cache-event-import.test.ts
@@ -0,0 +1,44 @@
+import { describe, expect, it } from 'vitest'
+import { kinds, finalizeEvent, generateSecretKey, getPublicKey } from 'nostr-tools'
+import { parseJsonlCacheImportText, parsePastedCacheImportJson } from './cache-event-import'
+
+function signedNote(content: string) {
+  const sk = generateSecretKey()
+  const pubkey = getPublicKey(sk)
+  return finalizeEvent(
+    {
+      kind: kinds.ShortTextNote,
+      created_at: Math.floor(Date.now() / 1000),
+      tags: [],
+      content
+    },
+    sk
+  )
+}
+
+describe('parsePastedCacheImportJson', () => {
+  it('accepts a single signed event object', () => {
+    const ev = signedNote('hello')
+    const { events, issues } = parsePastedCacheImportJson(JSON.stringify(ev))
+    expect(issues).toHaveLength(0)
+    expect(events).toHaveLength(1)
+    expect(events[0].id).toBe(ev.id)
+  })
+
+  it('rejects invalid JSON', () => {
+    const { events, issues } = parsePastedCacheImportJson('{not json')
+    expect(events).toHaveLength(0)
+    expect(issues[0].message).toMatch(/Invalid JSON/i)
+  })
+})
+
+describe('parseJsonlCacheImportText', () => {
+  it('parses one event per line', () => {
+    const a = signedNote('a')
+    const b = signedNote('b')
+    const text = `${JSON.stringify(a)}\n${JSON.stringify(b)}\n`
+    const { events, issues } = parseJsonlCacheImportText(text)
+    expect(issues).toHaveLength(0)
+    expect(events).toHaveLength(2)
+  })
+})
diff --git a/src/lib/cache-event-import.ts b/src/lib/cache-event-import.ts
new file mode 100644
index 00000000..89aa05cb
--- /dev/null
+++ b/src/lib/cache-event-import.ts
@@ -0,0 +1,148 @@
+import { isLikelyCachedNostrEvent } from '@/services/indexed-db.service'
+import type { Event } from 'nostr-tools'
+import { validateEvent, verifyEvent } from 'nostr-tools'
+
+/** Max size for a pasted JSON blob (single event or small array). */
+export const CACHE_IMPORT_MAX_PASTE_CHARS = 400_000
+
+/** Max `.jsonl` upload size. */
+export const CACHE_IMPORT_MAX_JSONL_FILE_BYTES = 2 * 1024 * 1024
+
+/** Max lines processed from a `.jsonl` file. */
+export const CACHE_IMPORT_MAX_JSONL_LINES = 500
+
+/** Skip oversized single lines in JSONL. */
+export const CACHE_IMPORT_MAX_JSONL_LINE_CHARS = 256_000
+
+export type CacheImportParseIssue = { line?: number; message: string }
+
+export type CacheImportParseResult = {
+  events: Event[]
+  issues: CacheImportParseIssue[]
+}
+
+function normalizeImportedEvent(raw: unknown): Event | null {
+  if (!isLikelyCachedNostrEvent(raw)) return null
+  const ev = raw as Event
+  if (typeof ev.created_at !== 'number' || !Number.isFinite(ev.created_at)) return null
+  if (typeof ev.sig !== 'string' || !ev.sig.trim()) return null
+  if (!validateEvent(ev)) return null
+  if (!verifyEvent(ev)) return null
+  return ev
+}
+
+function collectFromUnknown(
+  value: unknown,
+  line: number | undefined,
+  events: Event[],
+  issues: CacheImportParseIssue[]
+): void {
+  if (Array.isArray(value)) {
+    if (value.length + events.length > CACHE_IMPORT_MAX_JSONL_LINES) {
+      issues.push({
+        line,
+        message: `Too many events (max ${CACHE_IMPORT_MAX_JSONL_LINES})`
+      })
+      return
+    }
+    for (let i = 0; i < value.length; i++) {
+      collectFromUnknown(value[i], line, events, issues)
+      if (events.length >= CACHE_IMPORT_MAX_JSONL_LINES) break
+    }
+    return
+  }
+  const ev = normalizeImportedEvent(value)
+  if (ev) {
+    events.push(ev)
+    return
+  }
+  issues.push({
+    line,
+    message: line != null ? 'Invalid or unsigned event on this line' : 'Invalid or unsigned Nostr event JSON'
+  })
+}
+
+/** Parse one pasted JSON value (object or array of events). */
+export function parsePastedCacheImportJson(text: string): CacheImportParseResult {
+  const trimmed = text.trim()
+  if (!trimmed) {
+    return { events: [], issues: [{ message: 'Paste is empty' }] }
+  }
+  if (trimmed.length > CACHE_IMPORT_MAX_PASTE_CHARS) {
+    return {
+      events: [],
+      issues: [
+        {
+          message: `Paste exceeds ${Math.round(CACHE_IMPORT_MAX_PASTE_CHARS / 1024)} KB limit`
+        }
+      ]
+    }
+  }
+  let parsed: unknown
+  try {
+    parsed = JSON.parse(trimmed) as unknown
+  } catch {
+    return { events: [], issues: [{ message: 'Invalid JSON' }] }
+  }
+  const events: Event[] = []
+  const issues: CacheImportParseIssue[] = []
+  collectFromUnknown(parsed, undefined, events, issues)
+  return { events, issues }
+}
+
+/** Parse newline-delimited JSON (one event per line). */
+export function parseJsonlCacheImportText(text: string): CacheImportParseResult {
+  if (text.length > CACHE_IMPORT_MAX_JSONL_FILE_BYTES) {
+    return {
+      events: [],
+      issues: [
+        {
+          message: `File content exceeds ${Math.round(CACHE_IMPORT_MAX_JSONL_FILE_BYTES / (1024 * 1024))} MB limit`
+        }
+      ]
+    }
+  }
+  const lines = text.split(/\r?\n/)
+  const events: Event[] = []
+  const issues: CacheImportParseIssue[] = []
+  let nonEmptyLines = 0
+  for (let i = 0; i < lines.length; i++) {
+    const line = lines[i].trim()
+    if (!line) continue
+    nonEmptyLines++
+    if (nonEmptyLines > CACHE_IMPORT_MAX_JSONL_LINES) {
+      issues.push({
+        line: i + 1,
+        message: `Stopped at ${CACHE_IMPORT_MAX_JSONL_LINES} events (file has more lines)`
+      })
+      break
+    }
+    if (line.length > CACHE_IMPORT_MAX_JSONL_LINE_CHARS) {
+      issues.push({ line: i + 1, message: 'Line too large' })
+      continue
+    }
+    let parsed: unknown
+    try {
+      parsed = JSON.parse(line) as unknown
+    } catch {
+      issues.push({ line: i + 1, message: 'Invalid JSON on this line' })
+      continue
+    }
+    const before = events.length
+    collectFromUnknown(parsed, i + 1, events, issues)
+    if (events.length === before && issues[issues.length - 1]?.line !== i + 1) {
+      issues.push({ line: i + 1, message: 'Invalid or unsigned event on this line' })
+    }
+    if (events.length >= CACHE_IMPORT_MAX_JSONL_LINES) break
+  }
+  if (nonEmptyLines === 0) {
+    issues.push({ message: 'File has no event lines' })
+  }
+  return { events, issues }
+}
+
+export function formatCacheImportLimits(): string {
+  const mb = Math.round(CACHE_IMPORT_MAX_JSONL_FILE_BYTES / (1024 * 1024))
+  const pasteKb = Math.round(CACHE_IMPORT_MAX_PASTE_CHARS / 1024)
+  return `${CACHE_IMPORT_MAX_JSONL_LINES} events max · ${mb} MB file · ${pasteKb} KB paste`
+}
diff --git a/src/pages/secondary/CacheSettingsPage/index.tsx b/src/pages/secondary/CacheSettingsPage/index.tsx
index cb362e58..d219791a 100644
--- a/src/pages/secondary/CacheSettingsPage/index.tsx
+++ b/src/pages/secondary/CacheSettingsPage/index.tsx
@@ -1,3 +1,4 @@
+import CacheEventImportSettings from '@/components/CacheEventImportSettings'
 import InBrowserCacheSetting from '@/components/InBrowserCacheSetting'
 import EventArchiveCacheSettings from '@/components/EventArchiveCacheSettings'
 import { RefreshButton } from '@/components/RefreshButton'
@@ -31,6 +32,7 @@ const CacheSettingsPage = forwardRef(
       >
         <div key={contentKey} className="px-4 py-3 space-y-6">
           <InBrowserCacheSetting />
+          <CacheEventImportSettings />
           <EventArchiveCacheSettings />
         </div>
       </SecondaryPageLayout>