Publish shard CC-MAIN-2026-08/00715
Browse files- README.md +13 -13
- data/CC-MAIN-2026-08/00715.parquet +3 -0
- stats.csv +6 -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.
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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) ███████
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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 **2,507,635 documents across 128 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 128 files of CC-MAIN-2026-08 (2,507,635 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 128 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~103.8 GB | ~83 TB | — |
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| HTML extracted (uncompressed) | 311.0 GB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~5.2 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 3.6 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 311.0 GB of uncompressed HTML down to 11.1 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: ~103.8 GB of raw gzipped WARCs becomes **3.6 GB of Parquet** — a **96.6% total reduction** — containing 2,507,635 clean markdown documents.
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### Processing Times
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Pipeline timings across 128 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 4h 20m 59s avg 2m 2s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 16m 2s avg 7s
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Export (Parquet) ████░░░░░░░░░░░░░░░░░░░░ total 52m 38s avg 24s
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Publish (HuggingFace) ███████░░░░░░░░░░░░░░░░░ total 1h 25m 31s avg 40s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/00715.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:70c9ea1d9d29898882df85bc25f92b264d0e321544121b7022f811e184d5fa56
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size 30144173
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stats.csv
CHANGED
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@@ -60,6 +60,7 @@ CC-MAIN-2026-08,110,19345,2585860073,93489029,30521102,2026-03-13T07:23:31Z,221,
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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-2026-08,415,19293,2533466692,97370528,31311143,2026-03-13T07:36:
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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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