Publish shard CC-MAIN-2026-08/00129
Browse files- README.md +13 -13
- data/CC-MAIN-2026-08/00129.parquet +3 -0
- stats.csv +5 -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 **3,
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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) | ~7.
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| Final Parquet (Zstd level 19) | 4.
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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 5h
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 5s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total 1h
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Publish (HuggingFace) ███████████░░░░░░░░░░░░░ total 2h
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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 **3,477,820 documents across 178 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 178 files of CC-MAIN-2026-08 (3,477,820 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 178 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~144.3 GB | ~83 TB | — |
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| HTML extracted (uncompressed) | 430.7 GB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~7.3 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 4.9 GB | ~2.9 TB | **-32.0%** 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 430.7 GB of uncompressed HTML down to 15.5 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 68.1%.
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End to end: ~144.3 GB of raw gzipped WARCs becomes **4.9 GB of Parquet** — a **96.6% total reduction** — containing 3,477,820 clean markdown documents.
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### Processing Times
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Pipeline timings across 178 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 5h 51m 41s avg 1m 58s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 5s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total 1h 11m 56s avg 24s
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Publish (HuggingFace) ███████████░░░░░░░░░░░░░ total 2h 51m 18s avg 57s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/00129.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:a6b38ab33c187a67e3912a95dc295752da1177c5abb369614f2ef0b38c29d266
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size 29322874
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stats.csv
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@@ -74,7 +74,8 @@ CC-MAIN-2026-08,124,19516,2599820114,96915408,30891980,2026-03-13T08:09:10Z,100,
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CC-MAIN-2026-08,127,19402,2552000966,96535361,31142501,2026-03-13T08:17:24Z,93,0,27,80
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CC-MAIN-2026-08,128,19421,2552860799,92743989,29661401,2026-03-13T08:
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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-2026-08,253,19312,2557230855,96017199,30399966,2026-03-13T06:51:42Z,130,0,23,117
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CC-MAIN-2026-08,277,19420,2584694709,96412947,30707468,2026-03-13T08:14:39Z,84,0,22,6
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CC-MAIN-2026-08,278,19322,2550292792,95398249,30935270,2026-03-13T08:16:50Z,98,0,23,7
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CC-MAIN-2026-08,279,19479,2561365029,94152406,30402050,2026-03-13T08:19:10Z,101,0,23,14
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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-2026-08,417,19292,2580932812,94163471,29780723,2026-03-13T08:19:15Z,105,0,21,78
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CC-MAIN-2026-08,125,19254,2558572277,96621435,30532558,2026-03-13T08:12:05Z,80,0,20,73
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CC-MAIN-2026-08,126,19346,2586860649,94975987,31506543,2026-03-13T08:14:01Z,84,0,22,9
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CC-MAIN-2026-08,127,19402,2552000966,96535361,31142501,2026-03-13T08:17:24Z,93,0,27,80
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CC-MAIN-2026-08,128,19421,2552860799,92743989,29661401,2026-03-13T08:20:09Z,88,0,21,54
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CC-MAIN-2026-08,129,19354,2565925365,92600540,29322874,2026-03-13T08:22:25Z,117,0,18,0
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CC-MAIN-2026-08,280,19648,2618355119,95881188,30182638,2026-03-13T08:22:09Z,154,0,24,0
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