diff --git a/keyword_overview.py b/keyword_overview.py
new file mode 100644
index 0000000..0232bee
--- /dev/null
+++ b/keyword_overview.py
@@ -0,0 +1,98 @@
+import json
+import itertools
+from collections import Counter
+
+import ox
+import ox.web.auth
+
+from keywords import KEYWORDS
+
+def splitint(number, by):
+    div = int(number/by)
+    mod = number % by
+    return [div + 1 if i > (by - 1 - mod) else div for i in range(by)]
+
+
+known_tags = set(itertools.chain.from_iterable(KEYWORDS.values()))
+
+api = ox.API('https://cdosea.0x2620.org/api/')
+api.signin(**ox.web.auth.get('cdosea'))
+
+query = {
+    'conditions': [
+        {'key': 'layer', 'operator': '==', 'value': 'keywords'},
+    ],
+    'operator': '&'
+}
+
+total = api.findAnnotations({
+    'query': query
+})['data']['items']
+
+offset = 0
+chunk = 1000
+clips = []
+while offset < total:
+    clips += api.findAnnotations({
+        'query': query,
+        'keys': ['id', 'in', 'out', 'value'],
+        'range': [offset, offset+chunk]})['data']['items']
+    offset += chunk
+
+clips0 = [c for c in clips if c['out'] == c['in']]
+clips = [c for c in clips if c['out'] != c['in']]
+
+tags = {c['value'] for c in clips}
+
+unknown_tags = [t for t in tags if t not in known_tags]
+missing_tags = [t for t in known_tags if t not in tags]
+
+if missing_tags:
+    print('missing tags\n', ', '.join(missing_tags))
+
+for letter in sorted(KEYWORDS):
+    print('\n\n')
+    letter_clips = [c for c in clips if c['value'] in KEYWORDS[letter]]
+    letter_tags = {c['value'] for c in letter_clips}
+    durations = {c['out'] - c['in'] for c in letter_clips}
+    duration = ox.format_duration(sum(durations) * 1000)
+    print('%s: %s clips with %s of %s tags total duration: %s' % (letter, len(letter_clips), len(letter_tags), len(KEYWORDS[letter]), duration))
+    if len(letter_tags) != len(KEYWORDS[letter]):
+        print('missing tags:', ', '.join(set(KEYWORDS[letter]) - set(letter_tags)))
+
+    buckets = {}
+    letter_clips.sort(key=lambda c: c['out'] - c['in'])
+    size = splitint(len(letter_clips), 10)
+    p = 0
+    for i in range(10):
+        buckets[i+1] = letter_clips[p:+p+size[i]]
+        p += size[i]
+    for size in buckets:
+        bucket_tags = {c['value'] for c in buckets[size]}
+        durations = {c['out'] - c['in'] for c in buckets[size]}
+        dmin = min(durations)
+        dmax = max(durations)
+        print(size)
+        print('\t', len(buckets[size]), 'clips', len(bucket_tags), 'tags', 'durations from %.3f to %.3f' % (dmin, dmax))
+
+        if set(letter_tags) - bucket_tags:
+            print('\t', 'used tags:', ', '.join(bucket_tags))
+            print('\t', 'missing tags:', ', '.join(set(letter_tags) - bucket_tags))
+
+
+for tag in sorted(known_tags):
+    tag_clips = [c for c in clips if c['value'] == tag]
+    if tag_clips:
+        durations = {c['out'] - c['in'] for c in tag_clips}
+        duration = ox.format_duration(sum(durations) * 1000)
+        print('\n\n%s - %d clips total duration: %s' % (tag, len(tag_clips), duration))
+
+        distribution = Counter([round(d) for d in durations])
+        distribution = '\n\t'.join('% 2d  - %s clips' % (duration, count) for duration, count in sorted(distribution.items()))
+        print('\t' + distribution)
+
+if clips0:
+    print('\n\n%d clips with 0 duration' % len(clips0))
+    print('\t' + '\n\t'.join(sorted(['https://cdosea.0x2620.org/' + c['id'] + ' ' + c['value'] for c in clips0])))
+if unknown_tags:
+    print('\n\nunknown tags\n', ', '.join(unknown_tags))