diff --git a/packages/backend/src/misc/fastify-hook-handlers.ts b/packages/backend/src/misc/fastify-hook-handlers.ts
new file mode 100644
index 000000000..49a48f6a6
--- /dev/null
+++ b/packages/backend/src/misc/fastify-hook-handlers.ts
@@ -0,0 +1,9 @@
+import type { onRequestHookHandler } from 'fastify';
+
+export const handleRequestRedirectToOmitSearch: onRequestHookHandler = (request, reply, done) => {
+	const index = request.url.indexOf('?');
+	if (~index) {
+		reply.redirect(301, request.url.slice(0, index));
+	}
+	done();
+};
diff --git a/packages/backend/src/server/FileServerService.ts b/packages/backend/src/server/FileServerService.ts
index 7d63cdba0..f51d7aebc 100644
--- a/packages/backend/src/server/FileServerService.ts
+++ b/packages/backend/src/server/FileServerService.ts
@@ -27,6 +27,7 @@ import { LoggerService } from '@/core/LoggerService.js';
 import { bindThis } from '@/decorators.js';
 import { isMimeImage } from '@/misc/is-mime-image.js';
 import { correctFilename } from '@/misc/correct-filename.js';
+import { handleRequestRedirectToOmitSearch } from '@/misc/fastify-hook-handlers.js';
 import type { FastifyInstance, FastifyRequest, FastifyReply, FastifyPluginOptions } from 'fastify';
 
 const _filename = fileURLToPath(import.meta.url);
@@ -67,20 +68,23 @@ export class FileServerService {
 			done();
 		});
 
-		fastify.get('/files/app-default.jpg', (request, reply) => {
-			const file = fs.createReadStream(`${_dirname}/assets/dummy.png`);
-			reply.header('Content-Type', 'image/jpeg');
-			reply.header('Cache-Control', 'max-age=31536000, immutable');
-			return reply.send(file);
-		});
+		fastify.register((fastify, options, done) => {
+			fastify.addHook('onRequest', handleRequestRedirectToOmitSearch);
+			fastify.get('/files/app-default.jpg', (request, reply) => {
+				const file = fs.createReadStream(`${_dirname}/assets/dummy.png`);
+				reply.header('Content-Type', 'image/jpeg');
+				reply.header('Cache-Control', 'max-age=31536000, immutable');
+				return reply.send(file);
+			});
 
-		fastify.get<{ Params: { key: string; } }>('/files/:key', async (request, reply) => {
-			return await this.sendDriveFile(request, reply)
-				.catch(err => this.errorHandler(request, reply, err));
-		});
-		fastify.get<{ Params: { key: string; } }>('/files/:key/*', async (request, reply) => {
-			return await this.sendDriveFile(request, reply)
-				.catch(err => this.errorHandler(request, reply, err));
+			fastify.get<{ Params: { key: string; } }>('/files/:key', async (request, reply) => {
+				return await this.sendDriveFile(request, reply)
+					.catch(err => this.errorHandler(request, reply, err));
+			});
+			fastify.get<{ Params: { key: string; } }>('/files/:key/*', async (request, reply) => {
+				return await reply.redirect(301, `${this.config.url}/files/${request.params.key}`);
+			});
+			done();
 		});
 
 		fastify.get<{
diff --git a/packages/backend/src/server/web/ClientServerService.ts b/packages/backend/src/server/web/ClientServerService.ts
index 2592253b8..f255e28fc 100644
--- a/packages/backend/src/server/web/ClientServerService.ts
+++ b/packages/backend/src/server/web/ClientServerService.ts
@@ -34,6 +34,7 @@ import { ChannelEntityService } from '@/core/entities/ChannelEntityService.js';
 import type { ChannelsRepository, ClipsRepository, FlashsRepository, GalleryPostsRepository, MiMeta, NotesRepository, PagesRepository, ReversiGamesRepository, UserProfilesRepository, UsersRepository } from '@/models/_.js';
 import type Logger from '@/logger.js';
 import { deepClone } from '@/misc/clone.js';
+import { handleRequestRedirectToOmitSearch } from '@/misc/fastify-hook-handlers.js';
 import { bindThis } from '@/decorators.js';
 import { FlashEntityService } from '@/core/entities/FlashEntityService.js';
 import { RoleService } from '@/core/RoleService.js';
@@ -253,11 +254,16 @@ export class ClientServerService {
 
 		//#region vite assets
 		if (this.config.clientManifestExists) {
-			fastify.register(fastifyStatic, {
-				root: viteOut,
-				prefix: '/vite/',
-				maxAge: ms('30 days'),
-				decorateReply: false,
+			fastify.register((fastify, options, done) => {
+				fastify.register(fastifyStatic, {
+					root: viteOut,
+					prefix: '/vite/',
+					maxAge: ms('30 days'),
+					immutable: true,
+					decorateReply: false,
+				});
+				fastify.addHook('onRequest', handleRequestRedirectToOmitSearch);
+				done();
 			});
 		} else {
 			const port = (process.env.VITE_PORT ?? '5173');
@@ -292,11 +298,16 @@ export class ClientServerService {
 			decorateReply: false,
 		});
 
-		fastify.register(fastifyStatic, {
-			root: tarball,
-			prefix: '/tarball/',
-			immutable: true,
-			decorateReply: false,
+		fastify.register((fastify, options, done) => {
+			fastify.register(fastifyStatic, {
+				root: tarball,
+				prefix: '/tarball/',
+				maxAge: ms('30 days'),
+				immutable: true,
+				decorateReply: false,
+			});
+			fastify.addHook('onRequest', handleRequestRedirectToOmitSearch);
+			done();
 		});
 
 		fastify.get('/favicon.ico', async (request, reply) => {