diff --git a/swh/web/api/utils.py b/swh/web/api/utils.py
--- a/swh/web/api/utils.py
+++ b/swh/web/api/utils.py
@@ -164,9 +164,12 @@
         - filetype_url: its filetype information
 
     """
+    checksums = content
+    if 'checksums' in content:
+        checksums = content['checksums']
     for h in ['sha1', 'sha1_git', 'sha256']:
-        if h in content:
-            q = '%s:%s' % (h, content[h])
+        if h in checksums:
+            q = '%s:%s' % (h, checksums[h])
             if top_url:
                 content['content_url'] = reverse('content', kwargs={'q': q})
             content['data_url'] = reverse('content-raw', kwargs={'q': q})
diff --git a/swh/web/common/service.py b/swh/web/common/service.py
--- a/swh/web/common/service.py
+++ b/swh/web/common/service.py
@@ -651,6 +651,14 @@
     """
     algo, hash = query.parse_hash(q)
     c = storage.content_find({algo: hash})
+    if c:
+        # group all computed content checksums in a dictionnary
+        checksums = {}
+        for hash in hashutil.ALGORITHMS:
+            if hash in c:
+                checksums[hash] = c[hash]
+                del c[hash]
+        c['checksums'] = checksums
     return converters.from_content(c)
 
 
diff --git a/swh/web/tests/api/views/test_content.py b/swh/web/tests/api/views/test_content.py
--- a/swh/web/tests/api/views/test_content.py
+++ b/swh/web/tests/api/views/test_content.py
@@ -381,13 +381,17 @@
 
     @patch('swh.web.api.views.content.service')
     @istest
-    def api_content_metadata(self, mock_service):
+    def test_api_content_metadata(self, mock_service):
         # given
         mock_service.lookup_content.return_value = {
-            'sha1': '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03',
-            'sha1_git': 'b4e8f472ffcb01a03875b26e462eb568739f6882',
-            'sha256': '83c0e67cc80f60caf1fcbec2d84b0ccd7968b3be4735637006560'
-            'cde9b067a4f',
+            'checksums': {
+                'blake2s256': '685395c5dc57cada459364f0946d3dd45bad5f'
+                              'cbabc1048edb44380f1d31d0aa',
+                'sha1': '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03',
+                'sha1_git': 'b4e8f472ffcb01a03875b26e462eb568739f6882',
+                'sha256': '83c0e67cc80f60caf1fcbec2d84b0ccd7968b3be47'
+                          '35637006560cde9b067a4f',
+            },
             'length': 17,
             'status': 'visible'
         }
@@ -399,6 +403,14 @@
         self.assertEquals(rv.status_code, 200)
         self.assertEquals(rv['Content-Type'], 'application/json')
         self.assertEquals(rv.data, {
+            'checksums': {
+                'blake2s256': '685395c5dc57cada459364f0946d3dd45bad5f'
+                              'cbabc1048edb44380f1d31d0aa',
+                'sha1': '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03',
+                'sha1_git': 'b4e8f472ffcb01a03875b26e462eb568739f6882',
+                'sha256': '83c0e67cc80f60caf1fcbec2d84b0ccd7968b3be47'
+                          '35637006560cde9b067a4f',
+            },
             'data_url': '/api/1/content/'
             'sha1:40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03/raw/',
             'filetype_url': '/api/1/content/'
@@ -407,10 +419,6 @@
             'sha1:40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03/language/',
             'license_url': '/api/1/content/'
             'sha1:40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03/license/',
-            'sha1': '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03',
-            'sha1_git': 'b4e8f472ffcb01a03875b26e462eb568739f6882',
-            'sha256': '83c0e67cc80f60caf1fcbec2d84b0ccd7968b3be4735637006560c'
-            'de9b067a4f',
             'length': 17,
             'status': 'visible'
         })
diff --git a/swh/web/tests/common/test_service.py b/swh/web/tests/common/test_service.py
--- a/swh/web/tests/common/test_service.py
+++ b/swh/web/tests/common/test_service.py
@@ -18,12 +18,15 @@
 class ServiceTestCase(unittest.TestCase):
 
     def setUp(self):
-        self.SHA1_SAMPLE = '18d8be353ed3480476f032475e7c233eff7371d5'
+        self.BLAKE2S256_SAMPLE = ('685395c5dc57cada459364f0946d3dd45b'
+                                  'ad5fcbabc1048edb44380f1d31d0aa')
+        self.BLAKE2S256_SAMPLE_BIN = hash_to_bytes(self.BLAKE2S256_SAMPLE)
+        self.SHA1_SAMPLE = '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03'
         self.SHA1_SAMPLE_BIN = hash_to_bytes(self.SHA1_SAMPLE)
-        self.SHA256_SAMPLE = ('39007420ca5de7cb3cfc15196335507e'
-                              'e76c98930e7e0afa4d2747d3bf96c926')
+        self.SHA256_SAMPLE = ('8abb0aa566452620ecce816eecdef4792d77a'
+                              '293ad8ea82a4d5ecb4d36f7e560')
         self.SHA256_SAMPLE_BIN = hash_to_bytes(self.SHA256_SAMPLE)
-        self.SHA1GIT_SAMPLE = '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03'
+        self.SHA1GIT_SAMPLE = '25d1a2e8f32937b0f498a5ca87f823d8df013c01'
         self.SHA1GIT_SAMPLE_BIN = hash_to_bytes(self.SHA1GIT_SAMPLE)
         self.DIRECTORY_ID = '7834ef7e7c357ce2af928115c6c6a42b7e2a44e6'
         self.DIRECTORY_ID_BIN = hash_to_bytes(self.DIRECTORY_ID)
@@ -84,13 +87,17 @@
         }
 
         self.SAMPLE_CONTENT = {
-            'sha1': self.SHA1_SAMPLE,
-            'sha256': self.SHA256_SAMPLE,
-            'sha1_git': self.SHA1GIT_SAMPLE,
+            'checksums': {
+                'blake2s256': self.BLAKE2S256_SAMPLE,
+                'sha1': self.SHA1_SAMPLE,
+                'sha256': self.SHA256_SAMPLE,
+                'sha1_git': self.SHA1GIT_SAMPLE,
+            },
             'length': 190,
             'status': 'absent'
         }
         self.SAMPLE_CONTENT_RAW = {
+            'blake2s256': self.BLAKE2S256_SAMPLE_BIN,
             'sha1': self.SHA1_SAMPLE_BIN,
             'sha256': self.SHA256_SAMPLE_BIN,
             'sha1_git': self.SHA1GIT_SAMPLE_BIN,
@@ -1567,7 +1574,7 @@
 
         # when
         actual_content = service.lookup_content_raw(
-            'sha1:18d8be353ed3480476f032475e7c233eff7371d5')
+            'sha1:' + self.SHA1_SAMPLE)
 
         # then
         self.assertIsNone(actual_content)