diff --git a/.changeset/witty-seahorses-rhyme.md b/.changeset/witty-seahorses-rhyme.md
new file mode 100644
index 00000000..da7b2319
--- /dev/null
+++ b/.changeset/witty-seahorses-rhyme.md
@@ -0,0 +1,6 @@
+---
+'imagetools-core': minor
+'vite-imagetools': minor
+---
+
+feat: allow usage of all supported sharp output formats
diff --git a/packages/core/src/transforms/__tests__/format.spec.ts b/packages/core/src/transforms/__tests__/format.spec.ts
index 621604a6..9ba3a1b3 100644
--- a/packages/core/src/transforms/__tests__/format.spec.ts
+++ b/packages/core/src/transforms/__tests__/format.spec.ts
@@ -1,13 +1,13 @@
 /* eslint-disable @typescript-eslint/no-non-null-assertion */
-import { format, FormatValue } from '../format'
-import { TransformFactoryContext } from '../../types'
+import { format } from '../format'
 import { applyTransforms } from '../../index'
-import sharp, { Sharp } from 'sharp'
-import { join } from 'path'
+import { consoleLogger } from '../../lib/logger'
+import { TransformFactoryContext } from '../../types'
+import { join } from 'node:path'
 import { toMatchFile } from 'jest-file-snapshot'
 import { toMatchImageSnapshot } from 'jest-image-snapshot'
+import sharp, { FormatEnum, Sharp } from 'sharp'
 import { describe, beforeAll, beforeEach, test, expect, vi } from 'vitest'
-import { consoleLogger } from '../../lib/logger'
 
 expect.extend({ toMatchFile, toMatchImageSnapshot })
 
@@ -34,7 +34,7 @@ describe('format', () => {
       //@ts-expect-error invalid args
       const res = format({ format: 'invalid' }, dirCtx)
 
-      expect(res).toBeUndefined()
+      expect(res).toThrow()
     })
 
     test('empty', () => {
@@ -45,7 +45,7 @@ describe('format', () => {
     })
 
     test('valid', () => {
-      const formats: FormatValue[] = ['avif', 'jpg', 'jpeg', 'png', 'heif', 'webp', 'tiff']
+      const formats: Array<keyof FormatEnum> = ['avif', 'jpg', 'jpeg', 'png', 'heif', 'webp', 'tiff']
 
       for (const f of formats) {
         const res = format({ format: f }, dirCtx)
diff --git a/packages/core/src/transforms/format.ts b/packages/core/src/transforms/format.ts
index a77286fd..343f7cff 100644
--- a/packages/core/src/transforms/format.ts
+++ b/packages/core/src/transforms/format.ts
@@ -5,29 +5,23 @@ import { getProgressive } from './progressive.js'
 import { getLossless } from './lossless.js'
 import { FormatEnum } from 'sharp'
 
-export const formatValues = ['avif', 'heif', 'jpeg', 'jpg', 'png', 'tiff', 'webp'] as const
-
-export type FormatValue = (typeof formatValues)[number]
-
 export interface FormatOptions {
-  format: FormatValue
+  format: keyof FormatEnum
 }
 
 export const format: TransformFactory<FormatOptions> = (config) => {
-  let format: FormatValue | undefined = undefined
+  let format: keyof FormatEnum
 
-  if (config.format && formatValues.includes(config.format)) {
+  if (!config.format) {
+    return
+  } else {
     format = config.format
   }
-  if (!format) return
-
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  const fixedFormat: keyof FormatEnum = format as any
 
   return function formatTransform(image) {
     image[METADATA].format = format
 
-    return image.toFormat(fixedFormat, {
+    return image.toFormat(format, {
       quality: getQuality(config, image),
       lossless: getLossless(config, image) as boolean,
       progressive: getProgressive(config, image) as boolean