diff --git a/packages/app/package.json b/packages/app/package.json
index eabb863b..6b487ed1 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -14,6 +14,7 @@
     "@scure/bip39": "^1.1.1",
     "@snort/nostr": "^1.0.0",
     "@szhsin/react-menu": "^3.3.1",
+    "@void-cat/api": "^1.0.4",
     "base32-decode": "^1.0.0",
     "bech32": "^2.0.0",
     "dexie": "^3.2.2",
diff --git a/packages/app/src/Upload/VoidCat.ts b/packages/app/src/Upload/VoidCat.ts
index bc7e014c..9dc7dfd6 100644
--- a/packages/app/src/Upload/VoidCat.ts
+++ b/packages/app/src/Upload/VoidCat.ts
@@ -1,5 +1,6 @@
-import * as utils from "@noble/curves/abstract/utils";
 import { EventKind } from "@snort/nostr";
+import { VoidApi } from "@void-cat/api";
+
 import { FileExtensionRegex, VoidCatHost } from "Const";
 import { EventPublisher } from "System/EventPublisher";
 import { UploadResult } from "Upload";
@@ -9,98 +10,54 @@ import { magnetURIDecode } from "Util";
  * Upload file to void.cat
  * https://void.cat/swagger/index.html
  */
-export default async function VoidCat(
+export default async function VoidCatUpload(
   file: File | Blob,
   filename: string,
   publisher?: EventPublisher
 ): Promise<UploadResult> {
-  const buf = await file.arrayBuffer();
-  const digest = await crypto.subtle.digest("SHA-256", buf);
+  const api = new VoidApi(VoidCatHost);
+  const uploader = api.getUploader(file);
 
-  const req = await fetch(`${VoidCatHost}/upload`, {
-    mode: "cors",
-    method: "POST",
-    body: buf,
-    headers: {
-      "Content-Type": "application/octet-stream",
-      "V-Content-Type": file.type,
-      "V-Filename": filename,
-      "V-Full-Digest": utils.bytesToHex(new Uint8Array(digest)),
-      "V-Description": "Upload from https://snort.social",
-      "V-Strip-Metadata": "true",
-    },
+  const rsp = await uploader.upload({
+    "V-Strip-Metadata": "true",
   });
-
-  if (req.ok) {
-    const rsp: VoidUploadResponse = await req.json();
-    if (rsp.ok) {
-      let ext = filename.match(FileExtensionRegex);
-      if (rsp.file?.metadata?.mimeType === "image/webp") {
-        ext = ["", "webp"];
-      }
-      const resultUrl = rsp.file?.metadata?.url ?? `${VoidCatHost}/d/${rsp.file?.id}${ext ? `.${ext[1]}` : ""}`;
-
-      const ret = {
-        url: resultUrl,
-      } as UploadResult;
-
-      if (publisher) {
-        const tags = [
-          ["url", resultUrl],
-          ["x", rsp.file?.metadata?.digest ?? ""],
-          ["m", rsp.file?.metadata?.mimeType ?? "application/octet-stream"],
-        ];
-        if (rsp.file?.metadata?.size) {
-          tags.push(["size", rsp.file.metadata.size.toString()]);
-        }
-        if (rsp.file?.metadata?.magnetLink) {
-          tags.push(["magnet", rsp.file.metadata.magnetLink]);
-          const parsedMagnet = magnetURIDecode(rsp.file.metadata.magnetLink);
-          if (parsedMagnet?.infoHash) {
-            tags.push(["i", parsedMagnet?.infoHash]);
-          }
-        }
-        ret.header = await publisher.generic(eb => {
-          eb.kind(EventKind.FileHeader).content(filename);
-          tags.forEach(t => eb.tag(t));
-          return eb;
-        });
-      }
-      return ret;
-    } else {
-      return {
-        error: rsp.errorMessage,
-      };
+  if (rsp.ok) {
+    let ext = filename.match(FileExtensionRegex);
+    if (rsp.file?.metadata?.mimeType === "image/webp") {
+      ext = ["", "webp"];
     }
+    const resultUrl = rsp.file?.metadata?.url ?? `${VoidCatHost}/d/${rsp.file?.id}${ext ? `.${ext[1]}` : ""}`;
+
+    const ret = {
+      url: resultUrl,
+    } as UploadResult;
+
+    if (publisher) {
+      const tags = [
+        ["url", resultUrl],
+        ["x", rsp.file?.metadata?.digest ?? ""],
+        ["m", rsp.file?.metadata?.mimeType ?? "application/octet-stream"],
+      ];
+      if (rsp.file?.metadata?.size) {
+        tags.push(["size", rsp.file.metadata.size.toString()]);
+      }
+      if (rsp.file?.metadata?.magnetLink) {
+        tags.push(["magnet", rsp.file.metadata.magnetLink]);
+        const parsedMagnet = magnetURIDecode(rsp.file.metadata.magnetLink);
+        if (parsedMagnet?.infoHash) {
+          tags.push(["i", parsedMagnet?.infoHash]);
+        }
+      }
+      ret.header = await publisher.generic(eb => {
+        eb.kind(EventKind.FileHeader).content(filename);
+        tags.forEach(t => eb.tag(t));
+        return eb;
+      });
+    }
+    return ret;
+  } else {
+    return {
+      error: rsp.errorMessage,
+    };
   }
-  return {
-    error: "Upload failed",
-  };
 }
-
-export type VoidUploadResponse = {
-  ok: boolean;
-  file?: VoidFile;
-  errorMessage?: string;
-};
-
-export type VoidFile = {
-  id: string;
-  metadata?: VoidFileMeta;
-};
-
-export type VoidFileMeta = {
-  version: number;
-  id: string;
-  name?: string;
-  size: number;
-  uploaded: Date;
-  description?: string;
-  mimeType?: string;
-  digest?: string;
-  url?: string;
-  expires?: Date;
-  storage?: string;
-  encryptionParams?: string;
-  magnetLink?: string;
-};
diff --git a/yarn.lock b/yarn.lock
index 6878ed60..1b09ee9f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2587,6 +2587,13 @@
     "@typescript-eslint/types" "5.59.0"
     eslint-visitor-keys "^3.3.0"
 
+"@void-cat/api@^1.0.4":
+  version "1.0.4"
+  resolved "https://git.v0l.io/api/packages/Kieran/npm/%40void-cat%2Fapi/-/1.0.4/api-1.0.4.tgz#2e2f6eddc198fcf64d7e8b1fe7326641a6ce0d43"
+  integrity sha512-xGAGTWrra1UxoCAvbHLUQc/ibp7/tzgUay/F3fOklVpRPzFs8bdgc35v+EEQKHT7U5RXzCkdWjyfs+5NMESlxg==
+  dependencies:
+    sjcl "^1.0.8"
+
 "@webassemblyjs/ast@1.11.1":
   version "1.11.1"
   resolved "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.11.1.tgz"
@@ -8209,6 +8216,11 @@ sirv@^1.0.7:
     mrmime "^1.0.0"
     totalist "^1.0.0"
 
+sjcl@^1.0.8:
+  version "1.0.8"
+  resolved "https://registry.yarnpkg.com/sjcl/-/sjcl-1.0.8.tgz#f2ec8d7dc1f0f21b069b8914a41a8f236b0e252a"
+  integrity sha512-LzIjEQ0S0DpIgnxMEayM1rq9aGwGRG4OnZhCdjx7glTaJtf4zRfpg87ImfjSJjoW9vKpagd82McDOwbRT5kQKQ==
+
 slash@^3.0.0:
   version "3.0.0"
   resolved "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz"