diff --git a/package-lock.json b/package-lock.json
index 6c46cfd..f5ec07f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,7 +15,7 @@
 				"@koa/router": "^12.0.1",
 				"@playwright/test": "^1.36.1",
 				"@sealcode/jdd": "^0.2.17",
-				"@sealcode/sealgen": "^0.12.10",
+				"@sealcode/sealgen": "^0.12.12",
 				"@sealcode/ts-predicates": "^0.4.3",
 				"@types/kill-port": "^2.0.0",
 				"get-port": "^7.0.0",
@@ -1329,9 +1329,9 @@
 			}
 		},
 		"node_modules/@sealcode/sealgen": {
-			"version": "0.12.10",
-			"resolved": "https://registry.npmjs.org/@sealcode/sealgen/-/sealgen-0.12.10.tgz",
-			"integrity": "sha512-xKr35a10YnQfTJrd/Kr/LQBB5bj+HzxGv+EvLSNZCgN6w0WKRb3UQmK0hpNp1OpmisG96QCBN+NFRUriVG8Auw==",
+			"version": "0.12.12",
+			"resolved": "https://registry.npmjs.org/@sealcode/sealgen/-/sealgen-0.12.12.tgz",
+			"integrity": "sha512-dtzF/iKUyDGEr4cVC+8sPsFbJtR/MPCjD8DGBP1ofhiIdyxSJoGGvtF9vyX+EsV2wDTlh1SmPDiEvU/e4VqwxQ==",
 			"dependencies": {
 				"@koa/router": "^12.0.1",
 				"@sealcode/ts-predicates": "^0.4.3",
@@ -1339,6 +1339,7 @@
 				"esbuild": "^0.20.0",
 				"js-convert-case": "^4.2.0",
 				"locreq": "^3.0.0",
+				"md5": "^2.3.0",
 				"merge": "^2.1.1",
 				"prettier": "^2.7.1",
 				"prompts": "^2.4.2",
@@ -3532,6 +3533,14 @@
 				"node": ">=4"
 			}
 		},
+		"node_modules/charenc": {
+			"version": "0.0.2",
+			"resolved": "https://registry.npmjs.org/charenc/-/charenc-0.0.2.tgz",
+			"integrity": "sha512-yrLQ/yVUFXkzg7EDQsPieE/53+0RlaWTs+wBrvW36cyilJ2SaDWfl4Yj7MtLTXleV9uEKefbAGUPv2/iWSooRA==",
+			"engines": {
+				"node": "*"
+			}
+		},
 		"node_modules/check-error": {
 			"version": "1.0.3",
 			"resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.3.tgz",
@@ -3874,6 +3883,14 @@
 				"node": ">= 8"
 			}
 		},
+		"node_modules/crypt": {
+			"version": "0.0.2",
+			"resolved": "https://registry.npmjs.org/crypt/-/crypt-0.0.2.tgz",
+			"integrity": "sha512-mCxBlsHFYh9C+HVpiEacem8FEBnMXgU9gy4zmNC+SXAZNB/1idgp/aulFJ4FgCi7GPEVbfyng092GqL2k2rmow==",
+			"engines": {
+				"node": "*"
+			}
+		},
 		"node_modules/css-select": {
 			"version": "5.1.0",
 			"resolved": "https://registry.npmjs.org/css-select/-/css-select-5.1.0.tgz",
@@ -6852,6 +6869,21 @@
 				"node": ">= 8.16.2"
 			}
 		},
+		"node_modules/md5": {
+			"version": "2.3.0",
+			"resolved": "https://registry.npmjs.org/md5/-/md5-2.3.0.tgz",
+			"integrity": "sha512-T1GITYmFaKuO91vxyoQMFETst+O71VUPEU3ze5GNzDm0OWdP8v1ziTaAEPUr/3kLsY3Sftgz242A1SetQiDL7g==",
+			"dependencies": {
+				"charenc": "0.0.2",
+				"crypt": "0.0.2",
+				"is-buffer": "~1.1.6"
+			}
+		},
+		"node_modules/md5/node_modules/is-buffer": {
+			"version": "1.1.6",
+			"resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
+			"integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w=="
+		},
 		"node_modules/media-typer": {
 			"version": "0.3.0",
 			"resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
diff --git a/package.json b/package.json
index 5fe8d9b..7994fbf 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
 		"@koa/router": "^12.0.1",
 		"@playwright/test": "^1.36.1",
 		"@sealcode/jdd": "^0.2.17",
-		"@sealcode/sealgen": "^0.12.10",
+		"@sealcode/sealgen": "^0.12.12",
 		"@sealcode/ts-predicates": "^0.4.3",
 		"@types/kill-port": "^2.0.0",
 		"get-port": "^7.0.0",
diff --git a/src/back/globals.d.ts b/src/back/globals.d.ts
new file mode 100644
index 0000000..6dfacae
--- /dev/null
+++ b/src/back/globals.d.ts
@@ -0,0 +1,34 @@
+declare module "*.svg" {
+	export const getContent: () => Promise<string>;
+	export const getBuffer: () => Promise<Buffer>;
+	export const getBase64: () => Promise<string>;
+	export const url: string;
+}
+
+declare module "*.png" {
+	export const getContent: () => Promise<string>;
+	export const getBuffer: () => Promise<Buffer>;
+	export const getBase64: () => Promise<string>;
+	export const url: string;
+}
+
+declare module "*.jpg" {
+	export const getContent: () => Promise<string>;
+	export const getBuffer: () => Promise<Buffer>;
+	export const getBase64: () => Promise<string>;
+	export const url: string;
+}
+
+declare module "*.jpeg" {
+	export const getContent: () => Promise<string>;
+	export const getBuffer: () => Promise<Buffer>;
+	export const getBase64: () => Promise<string>;
+	export const url: string;
+}
+
+declare module "*.webp" {
+	export const getContent: () => Promise<string>;
+	export const getBuffer: () => Promise<Buffer>;
+	export const getBase64: () => Promise<string>;
+	export const url: string;
+}