diff --git a/docs/advanced/making plugins.md b/docs/advanced/making plugins.md
index 015e1953a..3042737a2 100644
--- a/docs/advanced/making plugins.md	
+++ b/docs/advanced/making plugins.md	
@@ -37,7 +37,7 @@ Transformers **map** over content, taking a Markdown file and outputting modifie
 ```ts
 export type QuartzTransformerPluginInstance = {
   name: string
-  textTransform?: (ctx: BuildCtx, src: string | Buffer) => string | Buffer
+  textTransform?: (ctx: BuildCtx, src: string) => string
   markdownPlugins?: (ctx: BuildCtx) => PluggableList
   htmlPlugins?: (ctx: BuildCtx) => PluggableList
   externalResources?: (ctx: BuildCtx) => Partial<StaticResources>
diff --git a/quartz/plugins/transformers/ofm.ts b/quartz/plugins/transformers/ofm.ts
index b0b0a42ef..a39a4db0e 100644
--- a/quartz/plugins/transformers/ofm.ts
+++ b/quartz/plugins/transformers/ofm.ts
@@ -156,20 +156,12 @@ export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options>>
     textTransform(_ctx, src) {
       // do comments at text level
       if (opts.comments) {
-        if (src instanceof Buffer) {
-          src = src.toString()
-        }
-
-        src = (src as string).replace(commentRegex, "")
+        src = src.replace(commentRegex, "")
       }
 
       // pre-transform blockquotes
       if (opts.callouts) {
-        if (src instanceof Buffer) {
-          src = src.toString()
-        }
-
-        src = (src as string).replace(calloutLineRegex, (value) => {
+        src = src.replace(calloutLineRegex, (value) => {
           // force newline after title of callout
           return value + "\n> "
         })
@@ -177,12 +169,8 @@ export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options>>
 
       // pre-transform wikilinks (fix anchors to things that may contain illegal syntax e.g. codeblocks, latex)
       if (opts.wikilinks) {
-        if (src instanceof Buffer) {
-          src = src.toString()
-        }
-
         // replace all wikilinks inside a table first
-        src = (src as string).replace(tableRegex, (value) => {
+        src = src.replace(tableRegex, (value) => {
           // escape all aliases and headers in wikilinks inside a table
           return value.replace(tableWikilinkRegex, (_value, raw) => {
             // const [raw]: (string | undefined)[] = capture
@@ -196,7 +184,7 @@ export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options>>
         })
 
         // replace all other wikilinks
-        src = (src as string).replace(wikilinkRegex, (value, ...capture) => {
+        src = src.replace(wikilinkRegex, (value, ...capture) => {
           const [rawFp, rawHeader, rawAlias]: (string | undefined)[] = capture
 
           const [fp, anchor] = splitAnchor(`${rawFp ?? ""}${rawHeader ?? ""}`)
diff --git a/quartz/plugins/types.ts b/quartz/plugins/types.ts
index a23f5d6f4..667799f4b 100644
--- a/quartz/plugins/types.ts
+++ b/quartz/plugins/types.ts
@@ -18,7 +18,7 @@ export type QuartzTransformerPlugin<Options extends OptionType = undefined> = (
 ) => QuartzTransformerPluginInstance
 export type QuartzTransformerPluginInstance = {
   name: string
-  textTransform?: (ctx: BuildCtx, src: string | Buffer) => string | Buffer
+  textTransform?: (ctx: BuildCtx, src: string) => string
   markdownPlugins?: (ctx: BuildCtx) => PluggableList
   htmlPlugins?: (ctx: BuildCtx) => PluggableList
   externalResources?: (ctx: BuildCtx) => Partial<StaticResources>
diff --git a/quartz/processors/parse.ts b/quartz/processors/parse.ts
index 15e559dc7..479313f49 100644
--- a/quartz/processors/parse.ts
+++ b/quartz/processors/parse.ts
@@ -95,7 +95,7 @@ export function createFileParser(ctx: BuildCtx, fps: FilePath[]) {
 
         // Text -> Text transforms
         for (const plugin of cfg.plugins.transformers.filter((p) => p.textTransform)) {
-          file.value = plugin.textTransform!(ctx, Buffer.from(file.value as Uint8Array))
+          file.value = plugin.textTransform!(ctx, file.value.toString())
         }
 
         // base data properties that plugins may use