diff --git a/src/lib/components/functional/FormatDropdown.svelte b/src/lib/components/functional/FormatDropdown.svelte
index 1f6845b..d2c5b3a 100644
--- a/src/lib/components/functional/FormatDropdown.svelte
+++ b/src/lib/components/functional/FormatDropdown.svelte
@@ -90,7 +90,13 @@
 				cat === rootCategory ||
 				categories[rootCategory!]?.canConvertTo?.includes(cat),
 		);
+
+		// handle special cases
 		if (from === ".gif") finalCategories.push("video");
+		if (from === ".apng") {
+			//finalCategories.push("image"); // -- buggy, magick can't convert from or to apng properly
+			finalCategories = finalCategories.filter((cat) => cat !== "audio");
+		}
 
 		// filter out categories that can't handle large files (due to browser/device limitations)
 		if (file && file.isLarge()) {
diff --git a/src/lib/converters/vertd.svelte.ts b/src/lib/converters/vertd.svelte.ts
index 4003ac9..321fe8d 100644
--- a/src/lib/converters/vertd.svelte.ts
+++ b/src/lib/converters/vertd.svelte.ts
@@ -264,6 +264,8 @@ export class VertdConverter extends Converter {
 		new FormatInfo("wmv", true, true),
 		new FormatInfo("mov", true, true),
 		new FormatInfo("gif", true, true),
+		new FormatInfo("apng", true, true),
+		new FormatInfo("webp", false, true), // for some odd reasons, ffmpeg only supports encoding webp and not decoding -- https://trac.ffmpeg.org/ticket/4907
 		new FormatInfo("mts", true, true),
 		new FormatInfo("ts", true, true),
 		new FormatInfo("m2ts", true, true),
@@ -379,7 +381,9 @@ export class VertdConverter extends Converter {
 			ws.onopen = () => {
 				const speed = Settings.instance.settings.vertdSpeed;
 				const keepMetadata = Settings.instance.settings.metadata;
-				this.log(`opened ws connection to vertd for file ${input.name}`);
+				this.log(
+					`opened ws connection to vertd for file ${input.name}`,
+				);
 				const msg: StartJobMessage = {
 					type: "startJob",
 					data: {