Publish shard CC-MAIN-2026-08/00111
Browse files- README.md +11 -11
- data/CC-MAIN-2026-08/00111.parquet +3 -0
- stats.csv +2 -1
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 **2,
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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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| Raw WARC (.warc.gz, downloaded) | ~
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| HTML extracted (uncompressed) |
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| Packed markdown WARC (.md.warc.gz) | ~4.4 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 3.0 GB | ~2.9 TB | **-31.8%** 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
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End to end: ~
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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 3h
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 8s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total
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Publish (HuggingFace) ███████░░░░░░░░░░░░░░░░░ total 1h
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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 **2,138,395 documents across 109 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 109 files of CC-MAIN-2026-08 (2,138,395 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 109 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~88.3 GB | ~83 TB | — |
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| HTML extracted (uncompressed) | 265.4 GB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~4.4 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 3.0 GB | ~2.9 TB | **-31.8%** 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 265.4 GB of uncompressed HTML down to 9.4 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 68.0%.
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End to end: ~88.3 GB of raw gzipped WARCs becomes **3.0 GB of Parquet** — a **96.6% total reduction** — containing 2,138,395 clean markdown documents.
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### Processing Times
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Pipeline timings across 109 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 3h 39m 7s avg 2m 0s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 8s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total 44m 32s avg 24s
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Publish (HuggingFace) ███████░░░░░░░░░░░░░░░░░ total 1h 12m 26s avg 39s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/00111.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:5fd312bf1d19f5a2bfe9bf00865d5c2225f6bc833e343a56aeb2588c3430a9ae
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size 29275356
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stats.csv
CHANGED
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@@ -57,6 +57,7 @@ CC-MAIN-2026-08,107,19477,2610750800,97990183,30876795,2026-03-13T07:11:08Z,203,
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CC-MAIN-2026-08,108,19400,2604607711,92680586,29321154,2026-03-13T07:15:10Z,157,0,26,57
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CC-MAIN-2026-08,109,19487,2556703136,91883241,29188577,2026-03-13T07:19:05Z,164,0,26,43
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CC-MAIN-2026-08,110,19345,2585860073,93489029,30521102,2026-03-13T07:23:31Z,221,0,31,11
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CC-MAIN-2026-08,251,19610,2594898345,97558492,31917087,2026-03-13T06:42:12Z,277,0,23,136
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CC-MAIN-2026-08,252,19240,2525928701,98163046,31104034,2026-03-13T06:47:10Z,238,0,49,10
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CC-MAIN-2026-08,253,19312,2557230855,96017199,30399966,2026-03-13T06:51:42Z,130,0,23,117
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CC-MAIN-2026-08,258,19594,2562768558,93951481,28809284,2026-03-13T07:13:13Z,157,0,29,16
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CC-MAIN-2026-08,259,19381,2566397701,90109275,29321014,2026-03-13T07:16:29Z,169,0,19,6
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CC-MAIN-2026-08,260,19334,2553916248,92962972,29646143,2026-03-13T07:22:01Z,284,0,29,17
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-
CC-MAIN-2026-08,261,19637,2584855305,96241876,32062389,2026-03-13T07:
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CC-MAIN-2026-08,401,19517,2605589961,95609438,30404753,2026-03-13T06:41:08Z,218,0,47,107
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CC-MAIN-2026-08,402,19446,2552785517,96654791,30588984,2026-03-13T06:43:58Z,98,0,26,44
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CC-MAIN-2026-08,403,19320,2579048144,91406292,29375992,2026-03-13T06:49:29Z,198,0,33,98
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CC-MAIN-2026-08,109,19487,2556703136,91883241,29188577,2026-03-13T07:19:05Z,164,0,26,43
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CC-MAIN-2026-08,110,19345,2585860073,93489029,30521102,2026-03-13T07:23:31Z,221,0,31,11
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CC-MAIN-2026-08,111,19477,2631100726,91693229,29275356,2026-03-13T07:25:54Z,107,0,34,0
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CC-MAIN-2026-08,251,19610,2594898345,97558492,31917087,2026-03-13T06:42:12Z,277,0,23,136
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CC-MAIN-2026-08,252,19240,2525928701,98163046,31104034,2026-03-13T06:47:10Z,238,0,49,10
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CC-MAIN-2026-08,253,19312,2557230855,96017199,30399966,2026-03-13T06:51:42Z,130,0,23,117
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CC-MAIN-2026-08,258,19594,2562768558,93951481,28809284,2026-03-13T07:13:13Z,157,0,29,16
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CC-MAIN-2026-08,259,19381,2566397701,90109275,29321014,2026-03-13T07:16:29Z,169,0,19,6
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CC-MAIN-2026-08,260,19334,2553916248,92962972,29646143,2026-03-13T07:22:01Z,284,0,29,17
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CC-MAIN-2026-08,261,19637,2584855305,96241876,32062389,2026-03-13T07:25:30Z,139,0,25,42
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CC-MAIN-2026-08,401,19517,2605589961,95609438,30404753,2026-03-13T06:41:08Z,218,0,47,107
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CC-MAIN-2026-08,402,19446,2552785517,96654791,30588984,2026-03-13T06:43:58Z,98,0,26,44
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CC-MAIN-2026-08,403,19320,2579048144,91406292,29375992,2026-03-13T06:49:29Z,198,0,33,98
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