remove EXIF information from PNG, JPEG and WebP images
jsr.io/@mary/exif-rm
typescript
jsr
refactor: take uint8 as input
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-9
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mod.ts
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mod.ts
···
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* @returns A new image buffer with EXIF removed, will return `null` if
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* image is unsupported, or if there's nothing to remove.
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*/
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export const remove = (buf: ArrayBuffer): Uint8Array | null => {
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const view = new DataView(buf);
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const indices: [start: number, end: number][] = [];
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export const remove = (buf: Uint8Array): Uint8Array | null => {
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const blen = buf.byteLength;
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const blen = view.byteLength;
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const view = new DataView(buf.buffer, buf.byteOffset, blen);
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const indices: [start: number, end: number][] = [];
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let start = 0;
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···
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return null;
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}
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const uint8 = new Uint8Array(buf);
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const copy = new Uint8Array(indices.reduce((accu, index) => accu + (index[1] - index[0]), blen - start));
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copy.set(
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uint8.subarray(start),
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buf.subarray(start),
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indices.reduce((offset, index) => {
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copy.set(uint8.subarray(index[0], index[1]), offset);
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copy.set(buf.subarray(index[0], index[1]), offset);
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return offset + (index[1] - index[0]);
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}, 0),
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);
+2
-2
test.ts
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-2
test.ts
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Deno.test('removes EXIF from JPEG files', async () => {
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const image = await Deno.readFile('./samples/sample.jpg');
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const exifRemoved = remove(image.buffer);
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const exifRemoved = remove(image);
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assert(exifRemoved != null);
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assert(exifRemoved.byteLength === 5480);
···
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Deno.test('removes EXIF from PNG files', async () => {
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const image = await Deno.readFile('./samples/sample.png');
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const exifRemoved = remove(image.buffer);
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const exifRemoved = remove(image);
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assert(exifRemoved != null);
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assert(exifRemoved.byteLength === 17638);