Publish shard CC-MAIN-2026-08/00161
Browse files- README.md +11 -11
- data/CC-MAIN-2026-08/00161.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 **14,
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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) | ~594.
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| HTML extracted (uncompressed) | 1.7 TB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~30.1 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 20.
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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 1.7 TB of uncompressed HTML down to
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End to end: ~594.
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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 36h
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 1h 43m 46s avg 8s
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Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 7h 53m
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Publish (HuggingFace) ███░░░░░░░░░░░░░░░░░░░░░ total 5h
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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 **14,213,145 documents across 734 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 734 files of CC-MAIN-2026-08 (14,213,145 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 734 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~594.9 GB | ~83 TB | — |
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| HTML extracted (uncompressed) | 1.7 TB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~30.1 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 20.4 GB | ~2.9 TB | **-32.4%** 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 1.7 TB of uncompressed HTML down to 64.0 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 68.2%.
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End to end: ~594.9 GB of raw gzipped WARCs becomes **20.4 GB of Parquet** — a **96.6% total reduction** — containing 14,213,145 clean markdown documents.
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### Processing Times
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Pipeline timings across 734 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 36h 31m 57s avg 2m 59s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 1h 43m 46s avg 8s
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Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 7h 53m 47s avg 38s
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Publish (HuggingFace) ███░░░░░░░░░░░░░░░░░░░░░ total 5h 45m 29s avg 28s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/00161.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:08f7a546854e0cb8ca9914eaa381a8fbd7f1505eab16595b7fa2a73ecbe9c0ac
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size 29432265
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stats.csv
CHANGED
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@@ -157,6 +157,7 @@ CC-MAIN-2026-08,157,19296,2569979144,95657887,30027726,2026-03-13T11:12:16Z,335,
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CC-MAIN-2026-08,160,19271,2527232924,95203130,30033158,2026-03-13T11:33:44Z,288,0,101,0
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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-2026-08,1144,19509,2566481040,94883595,29205160,2026-03-13T15:47:02Z,179,0,55,8
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CC-MAIN-2026-08,1145,19433,2544313558,90984935,28652764,2026-03-13T15:51:01Z,186,0,52,35
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CC-MAIN-2026-08,1146,19298,2558607156,94454330,29263992,2026-03-13T15:54:46Z,175,0,55,23
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CC-MAIN-2026-08,159,19592,2577788157,94175057,30675869,2026-03-13T11:27:14Z,452,0,84,0
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CC-MAIN-2026-08,160,19271,2527232924,95203130,30033158,2026-03-13T11:33:44Z,288,0,101,0
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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-2026-08,1144,19509,2566481040,94883595,29205160,2026-03-13T15:47:02Z,179,0,55,8
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CC-MAIN-2026-08,1145,19433,2544313558,90984935,28652764,2026-03-13T15:51:01Z,186,0,52,35
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CC-MAIN-2026-08,1146,19298,2558607156,94454330,29263992,2026-03-13T15:54:46Z,175,0,55,23
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CC-MAIN-2026-08,1147,19427,2559373463,97198018,29988995,2026-03-13T15:59:01Z,201,0,55,42
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CC-MAIN-2026-08,1201,19808,2613302440,99389904,31420651,2026-03-13T11:28:27Z,244,0,40,0
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CC-MAIN-2026-08,1202,19636,2614718109,93578849,29619593,2026-03-13T11:36:13Z,432,0,33,0
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CC-MAIN-2026-08,1203,19530,2570545683,93147045,29416235,2026-03-13T11:42:05Z,324,0,27,0
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