Publish shard CC-MAIN-2026-08/00119
Browse files- README.md +12 -12
- data/CC-MAIN-2026-08/00119.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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| Raw WARC (.warc.gz, downloaded) | ~
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| HTML extracted (uncompressed) |
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| Packed markdown WARC (.md.warc.gz) | ~5.8 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) |
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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 6s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total 58m
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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 **2,798,148 documents across 143 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 143 files of CC-MAIN-2026-08 (2,798,148 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 143 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~115.9 GB | ~83 TB | — |
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| HTML extracted (uncompressed) | 346.7 GB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~5.8 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 4.0 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 346.7 GB of uncompressed HTML down to 12.4 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: ~115.9 GB of raw gzipped WARCs becomes **4.0 GB of Parquet** — a **96.6% total reduction** — containing 2,798,148 clean markdown documents.
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### Processing Times
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Pipeline timings across 143 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 4h 54m 40s avg 2m 3s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 6s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total 58m 42s avg 24s
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Publish (HuggingFace) ████████░░░░░░░░░░░░░░░░ total 1h 43m 5s avg 43s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/00119.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:9d51af664b1f1d12799fe6774c2c157d9f18ec6d14f25acc9b4056de26284d23
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size 29641078
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stats.csv
CHANGED
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@@ -65,6 +65,7 @@ CC-MAIN-2026-08,115,19409,2567533083,97298312,30983238,2026-03-13T07:42:42Z,128,
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CC-MAIN-2026-08,116,19243,2529547260,94572631,30202354,2026-03-13T07:44:25Z,74,0,19,8
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CC-MAIN-2026-08,117,19312,2591755909,98560571,30842988,2026-03-13T07:47:28Z,78,0,21,81
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CC-MAIN-2026-08,118,19249,2506779989,92181553,28966860,2026-03-13T07:50:12Z,96,0,21,44
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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-2026-08,715,19432,2597827153,95508059,30144173,2026-03-13T07:39:08Z,165,0,29,94
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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-2026-08,717,19177,2533421579,90968900,29639500,2026-03-13T07:48:49Z,206,0,23,6
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CC-MAIN-2026-08,718,19595,2583045607,94790124,30279291,2026-03-13T07:
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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-2026-08,867,19323,2529650033,92719219,29138627,2026-03-13T07:49:59Z,88,0,18,7
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CC-MAIN-2026-08,117,19312,2591755909,98560571,30842988,2026-03-13T07:47:28Z,78,0,21,81
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CC-MAIN-2026-08,118,19249,2506779989,92181553,28966860,2026-03-13T07:50:12Z,96,0,21,44
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CC-MAIN-2026-08,119,19231,2563038965,92964034,29641078,2026-03-13T07:52:24Z,111,0,19,0
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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-2026-08,715,19432,2597827153,95508059,30144173,2026-03-13T07:39:08Z,165,0,29,94
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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-2026-08,717,19177,2533421579,90968900,29639500,2026-03-13T07:48:49Z,206,0,23,6
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CC-MAIN-2026-08,718,19595,2583045607,94790124,30279291,2026-03-13T07:52:09Z,131,0,28,39
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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-2026-08,865,19211,2557891798,96126883,30876712,2026-03-13T07:45:54Z,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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CC-MAIN-2026-08,867,19323,2529650033,92719219,29138627,2026-03-13T07:49:59Z,88,0,18,7
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CC-MAIN-2026-08,868,19282,2505890772,88764105,27958647,2026-03-13T07:52:19Z,120,0,19,0
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