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 ['sha1', 'sha1_git', 'sha256', 'blake2s256']:
+            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
@@ -384,10 +384,12 @@
     def api_content_metadata(self, mock_service):
         # given
         mock_service.lookup_content.return_value = {
-            'sha1': '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03',
-            'sha1_git': 'b4e8f472ffcb01a03875b26e462eb568739f6882',
-            'sha256': '83c0e67cc80f60caf1fcbec2d84b0ccd7968b3be4735637006560'
-            'cde9b067a4f',
+            'checksums': {
+                'sha1': '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03',
+                'sha1_git': 'b4e8f472ffcb01a03875b26e462eb568739f6882',
+                'sha256': '83c0e67cc80f60caf1fcbec2d84b0ccd7968b3be47'
+                          '35637006560cde9b067a4f',
+            },
             'length': 17,
             'status': 'visible'
         }
@@ -399,6 +401,12 @@
         self.assertEquals(rv.status_code, 200)
         self.assertEquals(rv['Content-Type'], 'application/json')
         self.assertEquals(rv.data, {
+            'checksums': {
+                'sha1': '40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03',
+                'sha1_git': 'b4e8f472ffcb01a03875b26e462eb568739f6882',
+                'sha256': '83c0e67cc80f60caf1fcbec2d84b0ccd7968b3be47'
+                          '35637006560cde9b067a4f',
+            },
             'data_url': '/api/1/content/'
             'sha1:40e71b8614fcd89ccd17ca2b1d9e66c5b00a6d03/raw/',
             'filetype_url': '/api/1/content/'
@@ -407,10 +415,6 @@
             '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
@@ -84,9 +84,11 @@
         }
 
         self.SAMPLE_CONTENT = {
-            'sha1': self.SHA1_SAMPLE,
-            'sha256': self.SHA256_SAMPLE,
-            'sha1_git': self.SHA1GIT_SAMPLE,
+            'checksums': {
+                'sha1': self.SHA1_SAMPLE,
+                'sha256': self.SHA256_SAMPLE,
+                'sha1_git': self.SHA1GIT_SAMPLE,
+            },
             'length': 190,
             'status': 'absent'
         }