Publish shard CC-MAIN-2026-08/00717
Browse files- README.md +12 -12
- data/CC-MAIN-2026-08/00717.parquet +3 -0
- stats.csv +3 -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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|---|---|---|---|
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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) | ~5.
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| Final Parquet (Zstd level 19) | 3.8 GB | ~2.9 TB | **-31.9%** 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 4h
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 7s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total
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Publish (HuggingFace) ████████░░░░░░░░░░░░░░░░ total 1h 41m
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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 **2,682,089 documents across 137 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 137 files of CC-MAIN-2026-08 (2,682,089 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 137 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~111.0 GB | ~83 TB | — |
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| HTML extracted (uncompressed) | 332.5 GB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~5.6 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 3.8 GB | ~2.9 TB | **-31.9%** 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 332.5 GB of uncompressed HTML down to 11.9 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: ~111.0 GB of raw gzipped WARCs becomes **3.8 GB of Parquet** — a **96.6% total reduction** — containing 2,682,089 clean markdown documents.
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### Processing Times
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Pipeline timings across 137 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 4h 43m 27s avg 2m 4s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 7s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total 56m 29s avg 24s
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Publish (HuggingFace) ████████░░░░░░░░░░░░░░░░ total 1h 41m 15s avg 44s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/00717.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:c3b17634b1e1b02874f740e0d344831976e57d92d8f2f37d4fe164235034d196
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size 29639500
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stats.csv
CHANGED
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@@ -80,6 +80,7 @@ CC-MAIN-2026-08,263,19704,2599536323,94011169,29652032,2026-03-13T07:32:21Z,124,
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CC-MAIN-2026-08,266,19542,2562231435,92724556,28951823,2026-03-13T07:44:49Z,183,0,21,123
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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-2026-08,403,19320,2579048144,91406292,29375992,2026-03-13T06:49:29Z,198,0,33,98
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CC-MAIN-2026-08,714,19423,2596376760,95980683,30740910,2026-03-13T07:34:18Z,181,0,22,38
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CC-MAIN-2026-08,716,19676,2611420776,94959649,30429233,2026-03-13T07:44:51Z,200,0,22,119
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CC-MAIN-2026-08,851,19575,2612873485,97000364,30911294,2026-03-13T06:41:39Z,163,0,37,204
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CC-MAIN-2026-08,853,19694,2567973975,95901932,30303494,2026-03-13T06:50:12Z,150,0,28,80
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CC-MAIN-2026-08,714,19423,2596376760,95980683,30740910,2026-03-13T07:34:18Z,181,0,22,38
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CC-MAIN-2026-08,716,19676,2611420776,94959649,30429233,2026-03-13T07:44:51Z,200,0,22,119
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CC-MAIN-2026-08,717,19177,2533421579,90968900,29639500,2026-03-13T07:48:42Z,206,0,23,0
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CC-MAIN-2026-08,851,19575,2612873485,97000364,30911294,2026-03-13T06:41:39Z,163,0,37,204
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CC-MAIN-2026-08,852,19334,2546015208,94959847,30205044,2026-03-13T06:45:52Z,183,0,57,11
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CC-MAIN-2026-08,853,19694,2567973975,95901932,30303494,2026-03-13T06:50:12Z,150,0,28,80
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CC-MAIN-2026-08,864,19304,2546300382,91040684,28811041,2026-03-13T07:39:13Z,182,0,22,105
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CC-MAIN-2026-08,865,19211,2557891798,96126883,30876712,2026-03-13T07:45:54Z,183,0,23,194
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CC-MAIN-2026-08,866,19240,2545414991,94210985,29478780,2026-03-13T07:48:04Z,85,0,32,10
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