diff --git a/messages/en.json b/messages/en.json
index a6ed3e0..3df9e3d 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -206,7 +206,7 @@
 			"title": "Conversion",
 			"advanced_settings": "Advanced settings",
 			"filename_format": "File name format",
-			"filename_description": "This will determine the name of the file on download, <b>not including the file extension.</b> You can put these following templates in the format, which will be replaced with the relevant information: <b>%name%</b> for the original file name, <b>%extension%</b> for the original file extension, and <b>%date%</b> for a date string of when the file was converted.",
+			"filename_description": "This will determine the name of the file on download, <b>not including the file extension.</b> You can put the following templates in the format, which will be replaced with the relevant information: <b>%name%</b> for the original file name, <b>%extension%</b> for the original file extension, <b>%datetime%</b> for the full ISO 8601 timestamp, <b>%date%</b> for the date, <b>%time%</b> for the time, and <b>%unix%</b> for the unix timestamp.",
 			"placeholder": "VERT_%name%",
 			"default_format": "Default conversion format",
 			"default_format_enable": "Enable",
diff --git a/src/lib/types/file.svelte.ts b/src/lib/types/file.svelte.ts
index f2eaccf..7113499 100644
--- a/src/lib/types/file.svelte.ts
+++ b/src/lib/types/file.svelte.ts
@@ -483,11 +483,18 @@ export class VertFile {
 		const filenameFormat = settings.filenameFormat || "VERT_%name%";
 
 		const format = (name: string) => {
-			const date = new Date().toISOString();
+			const now = new Date();
+			const iso = now.toISOString();
+			const date = iso.split("T")[0];
+			const time = iso.split("T")[1].split(".")[0].replace(/:/g, "-");
+			const unix = now.getTime().toString();
 			const baseName = this.file.name.replace(/\.[^/.]+$/, "");
 			const originalExtension = this.file.name.split(".").pop()!;
 			return name
+				.replace(/%datetime%/g, iso)
 				.replace(/%date%/g, date)
+				.replace(/%time%/g, time)
+				.replace(/%unix%/g, unix)
 				.replace(/%name%/g, baseName)
 				.replace(/%extension%/g, originalExtension);
 		};