Publish shard CC-MAIN-2026-08/00710
Browse files- README.md +13 -13
- data/CC-MAIN-2026-08/00710.parquet +3 -0
- stats.csv +4 -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 **1,
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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) | ~
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| Final Parquet (Zstd level 19) | 2.
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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
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Convert (HTML → MD) ██░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 9s
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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 **1,962,991 documents across 100 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 100 files of CC-MAIN-2026-08 (1,962,991 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 100 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~81.1 GB | ~83 TB | — |
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| HTML extracted (uncompressed) | 243.7 GB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~4.1 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 2.8 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 243.7 GB of uncompressed HTML down to 8.6 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: ~81.1 GB of raw gzipped WARCs becomes **2.8 GB of Parquet** — a **96.6% total reduction** — containing 1,962,991 clean markdown documents.
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### Processing Times
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Pipeline timings across 100 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 3h 5m 36s avg 1m 51s
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Convert (HTML → MD) ██░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 9s
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Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 39m 55s avg 23s
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Publish (HuggingFace) ████████░░░░░░░░░░░░░░░░ total 1h 6m 31s avg 39s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/00710.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:dfc1a14868206ef611e83163cfd0c18442a8d7456440d4913230fa7429bfc95e
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size 29691240
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stats.csv
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@@ -45,7 +45,7 @@ CC-MAIN-2026-08,42,19512,2616225819,95097420,30795858,2026-03-13T07:00:37Z,215,0
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CC-MAIN-2026-08,43,19406,2577750172,93559201,30417539,2026-03-13T07:05:57Z,237,0,60,20
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CC-MAIN-2026-08,46,19497,2587172839,93962075,30171609,2026-03-13T07:16:
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CC-MAIN-2026-08,102,19438,2568537422,97402434,31137610,2026-03-13T06:42:52Z,93,0,20,52
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CC-MAIN-2026-08,103,19511,2593312947,96164480,30296223,2026-03-13T06:47:48Z,187,0,46,61
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CC-MAIN-2026-08,106,19330,2553664208,96434475,31127446,2026-03-13T07:06:40Z,245,0,63,30
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CC-MAIN-2026-08,107,19477,2610750800,97990183,30876795,2026-03-13T07:11:08Z,203,0,34,29
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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-2026-08,253,19312,2557230855,96017199,30399966,2026-03-13T06:51:42Z,130,0,23,117
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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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