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metadata.js
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metadata.js
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// Copyright 2013 Lovell Fuller and others.
// SPDX-License-Identifier: Apache-2.0
'use strict';
const fs = require('fs');
const assert = require('assert');
const exifReader = require('exif-reader');
const icc = require('icc');
const sharp = require('../../');
const fixtures = require('../fixtures');
const create = { width: 1, height: 1, channels: 3, background: 'red' };
describe('Image metadata', function () {
it('JPEG', function (done) {
sharp(fixtures.inputJpg).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('jpeg', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(2725, metadata.width);
assert.strictEqual(2225, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(true, ['undefined', 'number'].includes(typeof metadata.density));
assert.strictEqual('4:2:0', metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
it('JPEG with EXIF/ICC', function (done) {
sharp(fixtures.inputJpgWithExif).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('jpeg', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(450, metadata.width);
assert.strictEqual(600, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(72, metadata.density);
assert.strictEqual('4:2:0', metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(true, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual(8, metadata.orientation);
// EXIF
assert.strictEqual('object', typeof metadata.exif);
assert.strictEqual(true, metadata.exif instanceof Buffer);
const exif = exifReader(metadata.exif);
assert.strictEqual('object', typeof exif);
assert.strictEqual('object', typeof exif.Image);
assert.strictEqual('number', typeof exif.Image.XResolution);
// ICC
assert.strictEqual('object', typeof metadata.icc);
assert.strictEqual(true, metadata.icc instanceof Buffer);
const profile = icc.parse(metadata.icc);
assert.strictEqual('object', typeof profile);
assert.strictEqual('Generic RGB Profile', profile.description);
done();
});
});
it('JPEG with IPTC/XMP', function (done) {
sharp(fixtures.inputJpgWithIptcAndXmp).metadata(function (err, metadata) {
if (err) throw err;
// IPTC
assert.strictEqual('object', typeof metadata.iptc);
assert.strictEqual(true, metadata.iptc instanceof Buffer);
assert.strictEqual(18250, metadata.iptc.byteLength);
assert.strictEqual(metadata.iptc.indexOf(Buffer.from('Photoshop')), 0);
// XMP
assert.strictEqual('object', typeof metadata.xmp);
assert.strictEqual(true, metadata.xmp instanceof Buffer);
assert.strictEqual(12466, metadata.xmp.byteLength);
assert.strictEqual(metadata.xmp.indexOf(Buffer.from('<?xpacket begin="')), 0);
done();
});
});
it('TIFF', function (done) {
sharp(fixtures.inputTiff).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('tiff', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(2464, metadata.width);
assert.strictEqual(3248, metadata.height);
assert.strictEqual('b-w', metadata.space);
assert.strictEqual(1, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(300, metadata.density);
assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual(1, metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
assert.strictEqual('inch', metadata.resolutionUnit);
done();
});
});
it('Multipage TIFF', function (done) {
sharp(fixtures.inputTiffMultipage).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('tiff', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(2464, metadata.width);
assert.strictEqual(3248, metadata.height);
assert.strictEqual('b-w', metadata.space);
assert.strictEqual(1, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(300, metadata.density);
assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(2, metadata.pages);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual(1, metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
it('PNG', function (done) {
sharp(fixtures.inputPng).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('png', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(2809, metadata.width);
assert.strictEqual(2074, metadata.height);
assert.strictEqual('b-w', metadata.space);
assert.strictEqual(1, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(300, metadata.density);
assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
it('Transparent PNG', function (done) {
sharp(fixtures.inputPngWithTransparency).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('png', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(2048, metadata.width);
assert.strictEqual(1536, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(4, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(72, metadata.density);
assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(true, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
it('WebP', function (done) {
sharp(fixtures.inputWebP).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('webp', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(1024, metadata.width);
assert.strictEqual(772, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual('undefined', typeof metadata.density);
assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
it('Animated WebP', () =>
sharp(fixtures.inputWebPAnimated)
.metadata()
.then(({
format, width, height, space, channels, depth,
isProgressive, pages, loop, delay, hasProfile,
hasAlpha
}) => {
assert.strictEqual(format, 'webp');
assert.strictEqual(width, 80);
assert.strictEqual(height, 80);
assert.strictEqual(space, 'srgb');
assert.strictEqual(channels, 4);
assert.strictEqual(depth, 'uchar');
assert.strictEqual(isProgressive, false);
assert.strictEqual(pages, 9);
assert.strictEqual(loop, 0);
assert.deepStrictEqual(delay, [120, 120, 90, 120, 120, 90, 120, 90, 30]);
assert.strictEqual(hasProfile, false);
assert.strictEqual(hasAlpha, true);
})
);
it('Animated WebP with all pages', () =>
sharp(fixtures.inputWebPAnimated, { pages: -1 })
.metadata()
.then(({
format, width, height, space, channels, depth,
isProgressive, pages, pageHeight, loop, delay,
hasProfile, hasAlpha
}) => {
assert.strictEqual(format, 'webp');
assert.strictEqual(width, 80);
assert.strictEqual(height, 720);
assert.strictEqual(space, 'srgb');
assert.strictEqual(channels, 4);
assert.strictEqual(depth, 'uchar');
assert.strictEqual(isProgressive, false);
assert.strictEqual(pages, 9);
assert.strictEqual(pageHeight, 80);
assert.strictEqual(loop, 0);
assert.deepStrictEqual(delay, [120, 120, 90, 120, 120, 90, 120, 90, 30]);
assert.strictEqual(hasProfile, false);
assert.strictEqual(hasAlpha, true);
})
);
it('Animated WebP with limited looping', () =>
sharp(fixtures.inputWebPAnimatedLoop3)
.metadata()
.then(({
format, width, height, space, channels, depth,
isProgressive, pages, loop, delay, hasProfile,
hasAlpha
}) => {
assert.strictEqual(format, 'webp');
assert.strictEqual(width, 370);
assert.strictEqual(height, 285);
assert.strictEqual(space, 'srgb');
assert.strictEqual(channels, 4);
assert.strictEqual(depth, 'uchar');
assert.strictEqual(isProgressive, false);
assert.strictEqual(pages, 10);
assert.strictEqual(loop, 3);
assert.deepStrictEqual(delay, [...Array(9).fill(3000), 15000]);
assert.strictEqual(hasProfile, false);
assert.strictEqual(hasAlpha, true);
})
);
it('GIF', function (done) {
sharp(fixtures.inputGif).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('gif', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(800, metadata.width);
assert.strictEqual(533, metadata.height);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual('undefined', typeof metadata.density);
assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
assert.deepStrictEqual(metadata.background, { r: 138, g: 148, b: 102 });
done();
});
});
it('GIF grey+alpha', function (done) {
sharp(fixtures.inputGifGreyPlusAlpha).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('gif', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(2, metadata.width);
assert.strictEqual(1, metadata.height);
assert.strictEqual(4, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual('undefined', typeof metadata.density);
assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
it('Animated GIF', () =>
sharp(fixtures.inputGifAnimated)
.metadata()
.then(({
format, width, height, space, channels, depth,
isProgressive, pages, loop, delay, background,
hasProfile, hasAlpha
}) => {
assert.strictEqual(format, 'gif');
assert.strictEqual(width, 80);
assert.strictEqual(height, 80);
assert.strictEqual(space, 'srgb');
assert.strictEqual(channels, 4);
assert.strictEqual(depth, 'uchar');
assert.strictEqual(isProgressive, false);
assert.strictEqual(pages, 30);
assert.strictEqual(loop, 0);
assert.deepStrictEqual(delay, Array(30).fill(30));
assert.deepStrictEqual(background, { r: 0, g: 0, b: 0 });
assert.strictEqual(hasProfile, false);
assert.strictEqual(hasAlpha, true);
})
);
it('Animated GIF with limited looping', () =>
sharp(fixtures.inputGifAnimatedLoop3)
.metadata()
.then(({
format, width, height, space, channels, depth,
isProgressive, pages, loop, delay, hasProfile,
hasAlpha
}) => {
assert.strictEqual(format, 'gif');
assert.strictEqual(width, 370);
assert.strictEqual(height, 285);
assert.strictEqual(space, 'srgb');
assert.strictEqual(channels, 4);
assert.strictEqual(depth, 'uchar');
assert.strictEqual(isProgressive, false);
assert.strictEqual(pages, 10);
assert.strictEqual(loop, 3);
assert.deepStrictEqual(delay, [...Array(9).fill(3000), 15000]);
assert.strictEqual(hasProfile, false);
assert.strictEqual(hasAlpha, true);
})
);
it('vips', () =>
sharp(fixtures.inputV)
.metadata()
.then(metadata => {
assert.strictEqual('vips', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(70, metadata.width);
assert.strictEqual(60, metadata.height);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(72, metadata.density);
assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
})
);
it('File in, Promise out', function (done) {
sharp(fixtures.inputJpg).metadata().then(function (metadata) {
assert.strictEqual('jpeg', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(2725, metadata.width);
assert.strictEqual(2225, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(true, ['undefined', 'number'].includes(typeof metadata.density));
assert.strictEqual('4:2:0', metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
it('Non-existent file in, Promise out', async () =>
assert.rejects(
() => sharp('fail').metadata(),
(err) => {
assert.strictEqual(err.message, 'Input file is missing: fail');
assert(err.stack.includes('at Sharp.metadata'));
assert(err.stack.includes(__filename));
return true;
}
)
);
it('Invalid stream in, callback out', (done) => {
fs.createReadStream(__filename).pipe(
sharp().metadata((err) => {
assert.strictEqual(err.message, 'Input buffer contains unsupported image format');
assert(err.stack.includes('at Sharp.metadata'));
assert(err.stack.includes(__filename));
done();
})
);
});
it('Stream in, Promise out', function (done) {
const readable = fs.createReadStream(fixtures.inputJpg);
const pipeline = sharp();
pipeline.metadata().then(function (metadata) {
assert.strictEqual('jpeg', metadata.format);
assert.strictEqual(829183, metadata.size);
assert.strictEqual(2725, metadata.width);
assert.strictEqual(2225, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(true, ['undefined', 'number'].includes(typeof metadata.density));
assert.strictEqual('4:2:0', metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
}).catch(done);
readable.pipe(pipeline);
});
it('Stream in, rejected Promise out', () => {
const pipeline = sharp();
fs
.createReadStream(__filename)
.pipe(pipeline);
return pipeline
.metadata()
.then(
() => Promise.reject(new Error('Expected metadata to reject')),
err => assert.strictEqual(err.message, 'Input buffer contains unsupported image format')
);
});
it('Stream in, finish event fires before metadata is requested', (done) => {
const create = { width: 1, height: 1, channels: 3, background: 'red' };
const image1 = sharp({ create }).png().pipe(sharp());
const image2 = sharp({ create }).png().pipe(sharp());
setTimeout(async () => {
const data1 = await image1.metadata();
assert.strictEqual('png', data1.format);
const data2 = await image2.metadata();
assert.strictEqual('png', data2.format);
done();
}, 500);
});
it('Stream', function (done) {
const readable = fs.createReadStream(fixtures.inputJpg);
const pipeline = sharp().metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('jpeg', metadata.format);
assert.strictEqual(829183, metadata.size);
assert.strictEqual(2725, metadata.width);
assert.strictEqual(2225, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(true, ['undefined', 'number'].includes(typeof metadata.density));
assert.strictEqual('4:2:0', metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
readable.pipe(pipeline);
});
it('Resize to half width using metadata', function (done) {
const image = sharp(fixtures.inputJpg);
image.metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual('jpeg', metadata.format);
assert.strictEqual('undefined', typeof metadata.size);
assert.strictEqual(2725, metadata.width);
assert.strictEqual(2225, metadata.height);
assert.strictEqual('srgb', metadata.space);
assert.strictEqual(3, metadata.channels);
assert.strictEqual('uchar', metadata.depth);
assert.strictEqual(true, ['undefined', 'number'].includes(typeof metadata.density));
assert.strictEqual('4:2:0', metadata.chromaSubsampling);
assert.strictEqual(false, metadata.isProgressive);
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual(false, metadata.hasAlpha);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
image.resize(Math.floor(metadata.width / 2)).toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual(1362, info.width);
assert.strictEqual(1112, info.height);
done();
});
});
});
it('Keep EXIF metadata and add sRGB profile after a resize', function (done) {
sharp(fixtures.inputJpgWithExif)
.resize(320, 240)
.withMetadata()
.toBuffer(function (err, buffer) {
if (err) throw err;
sharp(buffer).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual(true, metadata.hasProfile);
assert.strictEqual(8, metadata.orientation);
assert.strictEqual('object', typeof metadata.exif);
assert.strictEqual(true, metadata.exif instanceof Buffer);
// EXIF
const exif = exifReader(metadata.exif);
assert.strictEqual('object', typeof exif);
assert.strictEqual('object', typeof exif.Image);
assert.strictEqual('number', typeof exif.Image.XResolution);
// ICC
assert.strictEqual('object', typeof metadata.icc);
assert.strictEqual(true, metadata.icc instanceof Buffer);
const profile = icc.parse(metadata.icc);
assert.strictEqual('object', typeof profile);
assert.strictEqual('RGB', profile.colorSpace);
assert.strictEqual('Perceptual', profile.intent);
assert.strictEqual('Monitor', profile.deviceClass);
done();
});
});
});
it('keep existing ICC profile', async () => {
const data = await sharp(fixtures.inputJpgWithExif)
.keepIccProfile()
.toBuffer();
const metadata = await sharp(data).metadata();
const { description } = icc.parse(metadata.icc);
assert.strictEqual(description, 'Generic RGB Profile');
});
it('keep existing ICC profile, ignore colourspace conversion', async () => {
const data = await sharp(fixtures.inputJpgWithExif)
.keepIccProfile()
.toColourspace('cmyk')
.toBuffer();
const metadata = await sharp(data).metadata();
assert.strictEqual(metadata.channels, 3);
const { description } = icc.parse(metadata.icc);
assert.strictEqual(description, 'Generic RGB Profile');
});
it('keep existing CMYK ICC profile', async () => {
const data = await sharp(fixtures.inputJpgWithCmykProfile)
.pipelineColourspace('cmyk')
.toColourspace('cmyk')
.keepIccProfile()
.toBuffer();
const metadata = await sharp(data).metadata();
assert.strictEqual(metadata.channels, 4);
const { description } = icc.parse(metadata.icc);
assert.strictEqual(description, 'U.S. Web Coated (SWOP) v2');
});
it('transform to ICC profile and attach', async () => {
const data = await sharp({ create })
.png()
.withIccProfile('p3', { attach: true })
.toBuffer();
const metadata = await sharp(data).metadata();
const { description } = icc.parse(metadata.icc);
assert.strictEqual(description, 'sP3C');
});
it('transform to ICC profile but do not attach', async () => {
const data = await sharp({ create })
.png()
.withIccProfile('p3', { attach: false })
.toBuffer();
const metadata = await sharp(data).metadata();
assert.strictEqual(3, metadata.channels);
assert.strictEqual(undefined, metadata.icc);
});
it('transform to invalid ICC profile emits warning', async () => {
const img = sharp({ create })
.png()
.withIccProfile(fixtures.path('invalid-illuminant.icc'));
let warningEmitted = '';
img.on('warning', (warning) => {
warningEmitted = warning;
});
const data = await img.toBuffer();
assert.strictEqual('Invalid profile', warningEmitted);
const metadata = await sharp(data).metadata();
assert.strictEqual(3, metadata.channels);
assert.strictEqual(undefined, metadata.icc);
});
it('Apply CMYK output ICC profile', function (done) {
const output = fixtures.path('output.icc-cmyk.jpg');
sharp(fixtures.inputJpg)
.resize(64)
.withIccProfile('cmyk')
.toFile(output, function (err) {
if (err) throw err;
sharp(output).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual(true, metadata.hasProfile);
assert.strictEqual('cmyk', metadata.space);
assert.strictEqual(4, metadata.channels);
// ICC
assert.strictEqual('object', typeof metadata.icc);
assert.strictEqual(true, metadata.icc instanceof Buffer);
const profile = icc.parse(metadata.icc);
assert.strictEqual('object', typeof profile);
assert.strictEqual('CMYK', profile.colorSpace);
assert.strictEqual('Relative', profile.intent);
assert.strictEqual('Printer', profile.deviceClass);
});
fixtures.assertSimilar(output, fixtures.expected('icc-cmyk.jpg'), { threshold: 1 }, done);
});
});
it('Apply custom output ICC profile', function (done) {
const output = fixtures.path('output.hilutite.jpg');
sharp(fixtures.inputJpg)
.resize(64)
.withIccProfile(fixtures.path('hilutite.icm'))
.toFile(output, function (err, info) {
if (err) throw err;
fixtures.assertMaxColourDistance(output, fixtures.expected('hilutite.jpg'), 9);
done();
});
});
it('Include metadata in output, enabled via empty object', () =>
sharp(fixtures.inputJpgWithExif)
.withMetadata({})
.toBuffer()
.then((buffer) => sharp(buffer)
.metadata()
.then(metadata => {
assert.strictEqual(true, metadata.hasProfile);
assert.strictEqual(8, metadata.orientation);
assert.strictEqual('object', typeof metadata.exif);
assert.strictEqual(true, metadata.exif instanceof Buffer);
// EXIF
const exif = exifReader(metadata.exif);
assert.strictEqual('object', typeof exif);
assert.strictEqual('object', typeof exif.Image);
assert.strictEqual('number', typeof exif.Image.XResolution);
// ICC
assert.strictEqual('object', typeof metadata.icc);
assert.strictEqual(true, metadata.icc instanceof Buffer);
const profile = icc.parse(metadata.icc);
assert.strictEqual('object', typeof profile);
assert.strictEqual('RGB', profile.colorSpace);
assert.strictEqual('Perceptual', profile.intent);
assert.strictEqual('Monitor', profile.deviceClass);
})
)
);
it('Remove EXIF metadata after a resize', function (done) {
sharp(fixtures.inputJpgWithExif)
.resize(320, 240)
.toBuffer(function (err, buffer) {
if (err) throw err;
sharp(buffer).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
});
it('Remove metadata from PNG output', function (done) {
sharp(fixtures.inputJpgWithExif)
.png()
.toBuffer(function (err, buffer) {
if (err) throw err;
sharp(buffer).metadata(function (err, metadata) {
if (err) throw err;
assert.strictEqual(false, metadata.hasProfile);
assert.strictEqual('undefined', typeof metadata.orientation);
assert.strictEqual('undefined', typeof metadata.exif);
assert.strictEqual('undefined', typeof metadata.icc);
done();
});
});
});
it('Add EXIF metadata to JPEG', async () => {
const data = await sharp({ create })
.jpeg()
.withMetadata({
exif: {
IFD0: { Software: 'sharp' },
IFD2: { ExposureTime: '0.2' }
}
})
.toBuffer();
const { exif } = await sharp(data).metadata();
const parsedExif = exifReader(exif);
assert.strictEqual(parsedExif.Image.Software, 'sharp');
assert.strictEqual(parsedExif.Photo.ExposureTime, 0.2);
});
it('Set density of JPEG', async () => {
const data = await sharp({ create })
.withMetadata({
density: 300
})
.jpeg()
.toBuffer();
const { density } = await sharp(data).metadata();
assert.strictEqual(density, 300);
});
it('Set density of PNG', async () => {
const data = await sharp({ create })
.withMetadata({
density: 96
})
.png()
.toBuffer();
const { density } = await sharp(data).metadata();
assert.strictEqual(density, 96);
});
it('chromaSubsampling 4:4:4:4 CMYK JPEG', function () {
return sharp(fixtures.inputJpgWithCmykProfile)
.metadata()
.then(function (metadata) {
assert.strictEqual('4:4:4:4', metadata.chromaSubsampling);
});
});
it('chromaSubsampling 4:4:4 RGB JPEG', function () {
return sharp(fixtures.inputJpg)
.resize(10, 10)
.jpeg({ chromaSubsampling: '4:4:4' })
.toBuffer()
.then(function (data) {
return sharp(data)
.metadata()
.then(function (metadata) {
assert.strictEqual('4:4:4', metadata.chromaSubsampling);
});
});
});
it('isProgressive JPEG', function () {
return sharp(fixtures.inputJpg)
.resize(10, 10)
.jpeg({ progressive: true })
.toBuffer()
.then(function (data) {
return sharp(data)
.metadata()
.then(function (metadata) {
assert.strictEqual(true, metadata.isProgressive);
});
});
});
it('isProgressive PNG', function () {
return sharp(fixtures.inputJpg)
.resize(10, 10)
.png({ progressive: true })
.toBuffer()
.then(function (data) {
return sharp(data)
.metadata()
.then(function (metadata) {
assert.strictEqual(true, metadata.isProgressive);
});
});
});
it('16-bit TIFF with TIFFTAG_PHOTOSHOP metadata', () =>
sharp(fixtures.inputTifftagPhotoshop)
.metadata()
.then(metadata => {
assert.strictEqual(metadata.format, 'tiff');
assert.strictEqual(metadata.width, 317);
assert.strictEqual(metadata.height, 211);
assert.strictEqual(metadata.space, 'rgb16');
assert.strictEqual(metadata.channels, 3);
assert.strictEqual(typeof metadata.tifftagPhotoshop, 'object');
assert.strictEqual(metadata.tifftagPhotoshop instanceof Buffer, true);
assert.strictEqual(metadata.tifftagPhotoshop.length, 6634);
})
);
it('AVIF', async () => {
const metadata = await sharp(fixtures.inputAvif).metadata();
assert.deepStrictEqual(metadata, {
format: 'heif',
width: 2048,
height: 858,
space: 'srgb',
channels: 3,
depth: 'uchar',
isProgressive: false,
pages: 1,
pagePrimary: 0,
compression: 'av1',
hasProfile: false,
hasAlpha: false
});
});
it('withMetadata adds default sRGB profile', async () => {
const data = await sharp(fixtures.inputJpg)
.resize(32, 24)
.withMetadata()
.toBuffer();
const metadata = await sharp(data).metadata();
const { colorSpace, deviceClass, intent } = icc.parse(metadata.icc);
assert.strictEqual(colorSpace, 'RGB');
assert.strictEqual(deviceClass, 'Monitor');
assert.strictEqual(intent, 'Perceptual');
});
it('withMetadata adds default sRGB profile to RGB16', async () => {
const data = await sharp({ create })
.toColorspace('rgb16')
.png()
.withMetadata()
.toBuffer();
const metadata = await sharp(data).metadata();
assert.strictEqual(metadata.depth, 'ushort');
const { description } = icc.parse(metadata.icc);
assert.strictEqual(description, 'sRGB');
});
it('withMetadata adds P3 profile to 16-bit PNG', async () => {
const data = await sharp({ create })
.toColorspace('rgb16')
.png()
.withMetadata({ icc: 'p3' })
.toBuffer();
const metadata = await sharp(data).metadata();
assert.strictEqual(metadata.depth, 'ushort');
const { description } = icc.parse(metadata.icc);
assert.strictEqual(description, 'sP3C');
});
it('File input with corrupt header fails gracefully', function (done) {
sharp(fixtures.inputJpgWithCorruptHeader)
.metadata(function (err) {
assert.strictEqual(true, !!err);
assert.ok(err.message.includes('Input file has corrupt header: VipsJpeg: Premature end of'), err);
done();
});
});
it('Buffer input with corrupt header fails gracefully', function (done) {
sharp(fs.readFileSync(fixtures.inputJpgWithCorruptHeader))
.metadata(function (err) {
assert.strictEqual(true, !!err);
assert.ok(err.message.includes('Input buffer has corrupt header: VipsJpeg: Premature end of'), err);
done();
});
});
it('Unsupported lossless JPEG passes underlying error message', function (done) {
sharp(fixtures.inputJpgLossless)
.metadata(function (err) {
assert.strictEqual(true, !!err);
assert.strictEqual(true, /Input file has corrupt header: VipsJpeg: Unsupported JPEG process: SOF type 0xc3/.test(err.message));
done();
});
});
it('keepExif maintains all EXIF metadata', async () => {
const data1 = await sharp({ create })
.withExif({
IFD0: {
Copyright: 'Test 1',
Software: 'sharp'
}
})
.jpeg()
.toBuffer();
const data2 = await sharp(data1)
.keepExif()
.toBuffer();
const md2 = await sharp(data2).metadata();
const exif2 = exifReader(md2.exif);
assert.strictEqual(exif2.Image.Copyright, 'Test 1');
assert.strictEqual(exif2.Image.Software, 'sharp');
});
it('withExif replaces all EXIF metadata', async () => {
const data1 = await sharp({ create })
.withExif({
IFD0: {
Copyright: 'Test 1',
Software: 'sharp'
}
})
.jpeg()
.toBuffer();
const md1 = await sharp(data1).metadata();
const exif1 = exifReader(md1.exif);
assert.strictEqual(exif1.Image.Copyright, 'Test 1');
assert.strictEqual(exif1.Image.Software, 'sharp');
const data2 = await sharp(data1)
.withExif({
IFD0: {
Copyright: 'Test 2'
}
})
.toBuffer();
const md2 = await sharp(data2).metadata();
const exif2 = exifReader(md2.exif);
assert.strictEqual(exif2.Image.Copyright, 'Test 2');
assert.strictEqual(exif2.Image.Software, undefined);
});
it('withExifMerge merges all EXIF metadata', async () => {
const data1 = await sharp({ create })
.withExif({
IFD0: {
Copyright: 'Test 1'
}
})
.jpeg()
.toBuffer();
const md1 = await sharp(data1).metadata();
const exif1 = exifReader(md1.exif);
assert.strictEqual(exif1.Image.Copyright, 'Test 1');
assert.strictEqual(exif1.Image.Software, undefined);
const data2 = await sharp(data1)
.withExifMerge({
IFD0: {
Copyright: 'Test 2',
Software: 'sharp'
}
})
.toBuffer();
const md2 = await sharp(data2).metadata();
const exif2 = exifReader(md2.exif);
assert.strictEqual(exif2.Image.Copyright, 'Test 2');
assert.strictEqual(exif2.Image.Software, 'sharp');