Publish shard CC-MAIN-2026-08/06019
Browse files- README.md +10 -10
- data/CC-MAIN-2026-08/06019.parquet +3 -0
- stats.csv +3 -2
README.md
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Open Index is a large-scale web text dataset built from [Common Crawl](https://commoncrawl.org). Every page goes through a pipeline that extracts the main content from raw HTML, converts it to clean Markdown using [trafilatura](https://github.com/adbar/trafilatura), and packages the result into Parquet files with full WARC metadata preserved.
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The dataset currently includes crawl **CC-MAIN-2026-08** with **25,
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Open Index is released under the **Open Data Commons Attribution License (ODC-By) v1.0**, the same license used by Common Crawl.
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### Compression Ratios
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Numbers below are actual measurements summed across all
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| Stage |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~1.0 TB | ~83 TB | — |
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| HTML extracted (uncompressed) | 3.1 TB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~53.
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| Final Parquet (Zstd level 19) | 36.3 GB | ~2.9 TB | **-32.5%** vs packed WARC |
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The big win is the HTML → Markdown step: trafilatura strips all tags, scripts, styles, navigation, and ads, keeping only the main content. This cuts 3.1 TB of uncompressed HTML down to 114.
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End to end: ~1.0 TB of raw gzipped WARCs becomes **36.3 GB of Parquet** — a **96.6% total reduction** — containing 25,
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### Processing Times
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Pipeline timings across
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```
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Download (raw WARC) ████████████████████████ total 95h
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 6h 44m 27s avg 18s
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Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 23h
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Publish (HuggingFace) ██░░░░░░░░░░░░░░░░░░░░░░ total 8h
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```
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### Dataset Charts
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Open Index is a large-scale web text dataset built from [Common Crawl](https://commoncrawl.org). Every page goes through a pipeline that extracts the main content from raw HTML, converts it to clean Markdown using [trafilatura](https://github.com/adbar/trafilatura), and packages the result into Parquet files with full WARC metadata preserved.
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The dataset currently includes crawl **CC-MAIN-2026-08** with **25,368,691 documents across 1311 shards**. We plan to add more snapshots over time.
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Open Index is released under the **Open Data Commons Attribution License (ODC-By) v1.0**, the same license used by Common Crawl.
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### Compression Ratios
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Numbers below are actual measurements summed across all 1311 files of CC-MAIN-2026-08 (25,368,691 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 1311 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~1.0 TB | ~83 TB | — |
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| HTML extracted (uncompressed) | 3.1 TB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~53.8 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 36.3 GB | ~2.9 TB | **-32.5%** vs packed WARC |
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The big win is the HTML → Markdown step: trafilatura strips all tags, scripts, styles, navigation, and ads, keeping only the main content. This cuts 3.1 TB of uncompressed HTML down to 114.4 GB of markdown — a **98.3% reduction** — before any file-level compression is applied. Parquet with Zstd level 19 then compresses the markdown a further 68.3%.
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End to end: ~1.0 TB of raw gzipped WARCs becomes **36.3 GB of Parquet** — a **96.6% total reduction** — containing 25,368,691 clean markdown documents.
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### Processing Times
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Pipeline timings across 1311 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 95h 45m 29s avg 4m 22s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 6h 44m 27s avg 18s
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Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 23h 17m 45s avg 1m 3s
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Publish (HuggingFace) ██░░░░░░░░░░░░░░░░░░░░░░ total 8h 19m 36s avg 22s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/06019.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:14cb7aa585ca395058210c0ab4ae56357491d3e77c5a262af43832b2afa0863a
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size 27264819
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stats.csv
CHANGED
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@@ -1206,7 +1206,7 @@ CC-MAIN-2026-08,5281,19312,2548288769,95754664,29847059,2026-03-14T03:02:45Z,218
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| 1206 |
CC-MAIN-2026-08,5282,19286,2542475245,90491398,29220808,2026-03-14T03:06:42Z,224,0,21,26
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| 1207 |
CC-MAIN-2026-08,5283,19407,2586644756,97814193,32285770,2026-03-14T03:10:35Z,200,0,28,3
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| 1208 |
CC-MAIN-2026-08,5284,19385,2577760283,89211657,28756055,2026-03-14T03:15:17Z,255,0,31,19
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-
CC-MAIN-2026-08,5285,19423,2556593842,92663450,28869745,2026-03-14T03:19:16Z,197,0,20,
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CC-MAIN-2026-08,5492,19488,2577487663,95676086,30636918,2026-03-14T01:06:35Z,267,0,18,18
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| 1211 |
CC-MAIN-2026-08,5493,19631,2592234390,91001440,28842612,2026-03-14T01:19:12Z,181,0,28,9
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CC-MAIN-2026-08,5494,19345,2580777219,94618705,30365899,2026-03-14T01:19:12Z,155,0,49,9
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@@ -1291,6 +1291,7 @@ CC-MAIN-2026-08,6015,19328,2574783077,95843603,30916841,2026-03-14T02:55:42Z,348
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CC-MAIN-2026-08,6016,19361,2543102664,89575772,29780286,2026-03-14T03:02:45Z,320,0,96,15
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| 1292 |
CC-MAIN-2026-08,6017,19267,2545395359,92658587,28905012,2026-03-14T03:09:42Z,292,0,132,8
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CC-MAIN-2026-08,6018,19610,2579643752,90744513,29251859,2026-03-14T03:14:42Z,206,0,98,34
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CC-MAIN-2026-08,6250,19502,2594302344,89411296,28384540,2026-03-13T17:51:21Z,406,0,120,0
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CC-MAIN-2026-08,6251,19394,2555453090,92793633,28885378,2026-03-14T01:06:36Z,709,0,233,18
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CC-MAIN-2026-08,6252,19389,2566928631,91567909,28780284,2026-03-14T01:06:36Z,515,0,174,18
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|
@@ -1309,4 +1310,4 @@ CC-MAIN-2026-08,6264,19390,2556140389,90035362,28748648,2026-03-14T02:49:08Z,336
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CC-MAIN-2026-08,6265,19312,2589283307,91853772,29397305,2026-03-14T02:56:42Z,365,0,79,23
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CC-MAIN-2026-08,6266,19316,2559292525,100218103,31070791,2026-03-14T03:03:32Z,315,0,83,21
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CC-MAIN-2026-08,6267,19425,2572529260,91648843,29008769,2026-03-14T03:10:12Z,359,0,60,23
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-
CC-MAIN-2026-08,6268,19354,2536931860,88229687,28665609,2026-03-14T03:19:16Z,417,0,79,
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| 1206 |
CC-MAIN-2026-08,5282,19286,2542475245,90491398,29220808,2026-03-14T03:06:42Z,224,0,21,26
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CC-MAIN-2026-08,5283,19407,2586644756,97814193,32285770,2026-03-14T03:10:35Z,200,0,28,3
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CC-MAIN-2026-08,5284,19385,2577760283,89211657,28756055,2026-03-14T03:15:17Z,255,0,31,19
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CC-MAIN-2026-08,5285,19423,2556593842,92663450,28869745,2026-03-14T03:19:16Z,197,0,20,21
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| 1210 |
CC-MAIN-2026-08,5492,19488,2577487663,95676086,30636918,2026-03-14T01:06:35Z,267,0,18,18
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| 1211 |
CC-MAIN-2026-08,5493,19631,2592234390,91001440,28842612,2026-03-14T01:19:12Z,181,0,28,9
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| 1212 |
CC-MAIN-2026-08,5494,19345,2580777219,94618705,30365899,2026-03-14T01:19:12Z,155,0,49,9
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| 1291 |
CC-MAIN-2026-08,6016,19361,2543102664,89575772,29780286,2026-03-14T03:02:45Z,320,0,96,15
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| 1292 |
CC-MAIN-2026-08,6017,19267,2545395359,92658587,28905012,2026-03-14T03:09:42Z,292,0,132,8
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CC-MAIN-2026-08,6018,19610,2579643752,90744513,29251859,2026-03-14T03:14:42Z,206,0,98,34
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| 1294 |
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CC-MAIN-2026-08,6019,19344,2587245422,86333148,27264819,2026-03-14T03:20:12Z,281,0,47,0
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CC-MAIN-2026-08,6250,19502,2594302344,89411296,28384540,2026-03-13T17:51:21Z,406,0,120,0
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CC-MAIN-2026-08,6251,19394,2555453090,92793633,28885378,2026-03-14T01:06:36Z,709,0,233,18
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CC-MAIN-2026-08,6252,19389,2566928631,91567909,28780284,2026-03-14T01:06:36Z,515,0,174,18
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|
| 1310 |
CC-MAIN-2026-08,6265,19312,2589283307,91853772,29397305,2026-03-14T02:56:42Z,365,0,79,23
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| 1311 |
CC-MAIN-2026-08,6266,19316,2559292525,100218103,31070791,2026-03-14T03:03:32Z,315,0,83,21
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| 1312 |
CC-MAIN-2026-08,6267,19425,2572529260,91648843,29008769,2026-03-14T03:10:12Z,359,0,60,23
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| 1313 |
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CC-MAIN-2026-08,6268,19354,2536931860,88229687,28665609,2026-03-14T03:19:16Z,417,0,79,21
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