Publish 4 shards CC-MAIN-2026-08/03791–03877
Browse files- README.md +11 -11
- data/CC-MAIN-2026-08/03791.parquet +3 -0
- data/CC-MAIN-2026-08/03858.parquet +3 -0
- data/CC-MAIN-2026-08/03859.parquet +3 -0
- data/CC-MAIN-2026-08/03877.parquet +3 -0
- stats.csv +7 -3
README.md
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@@ -32,7 +32,7 @@ configs:
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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 **136,
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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) | ~5.8 TB | ~83 TB | — |
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| HTML extracted (uncompressed) | 16.4 TB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~287.
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| Final Parquet (Zstd level 19) | 193.
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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 16.4 TB of uncompressed HTML down to
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End to end: ~5.8 TB of raw gzipped WARCs becomes **193.
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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 17h 27m 50s avg 8s
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Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 112h
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Publish (HuggingFace) ██░░░░░░░░░░░░░░░░░░░░░░ total 43h
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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 **136,430,604 documents across 7316 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 7316 files of CC-MAIN-2026-08 (136,430,604 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 7316 files (measured) | 100,000 files (projected) | Reduction |
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|---|---|---|---|
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| Raw WARC (.warc.gz, downloaded) | ~5.8 TB | ~83 TB | — |
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| HTML extracted (uncompressed) | 16.4 TB | ~295 TB | — |
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| Packed markdown WARC (.md.warc.gz) | ~287.3 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 193.8 GB | ~2.9 TB | **-32.5%** 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 16.4 TB of uncompressed HTML down to 611.2 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 68.3%.
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End to end: ~5.8 TB of raw gzipped WARCs becomes **193.8 GB of Parquet** — a **96.7% total reduction** — containing 136,430,604 clean markdown documents.
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### Processing Times
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Pipeline timings across 7316 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 489h 3m 49s avg 4m 0s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 17h 27m 50s avg 8s
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Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 112h 40m 39s avg 55s
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Publish (HuggingFace) ██░░░░░░░░░░░░░░░░░░░░░░ total 43h 15m 22s avg 21s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/03791.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:b0f7377f55323f6b88d7110b667323d7858822672316b4c71e8db17471ddc075
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size 31455753
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data/CC-MAIN-2026-08/03858.parquet
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version https://git-lfs.github.com/spec/v1
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size 29726773
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data/CC-MAIN-2026-08/03859.parquet
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version https://git-lfs.github.com/spec/v1
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size 29135991
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data/CC-MAIN-2026-08/03877.parquet
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version https://git-lfs.github.com/spec/v1
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size 30394814
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stats.csv
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@@ -3778,16 +3778,17 @@ CC-MAIN-2026-08,3776,19584,2582885329,95393371,30031363,2026-03-17T05:22:02Z,100
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CC-MAIN-2026-08,3777,19513,2589142734,97489949,30602215,2026-03-17T07:04:32Z,105,0,24,54
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| 3779 |
CC-MAIN-2026-08,3778,19449,2588087997,94351499,29663502,2026-03-17T05:27:17Z,321,0,21,10
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| 3780 |
CC-MAIN-2026-08,3779,19199,2549960728,93066368,29304842,2026-03-17T05:31:47Z,153,0,29,29
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-
CC-MAIN-2026-08,3780,19410,2570025021,95259821,29932495,2026-03-17T07:09:47Z,91,0,20,
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| 3782 |
CC-MAIN-2026-08,3781,19404,2583276945,90583350,29653081,2026-03-17T05:36:02Z,214,0,41,47
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| 3783 |
CC-MAIN-2026-08,3782,19839,2626486825,92610103,29440267,2026-03-17T05:38:32Z,117,0,31,14
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CC-MAIN-2026-08,3786,19435,2566711179,94820562,30373142,2026-03-17T05:50:32Z,192,0,25,10
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CC-MAIN-2026-08,3787,19420,2596365494,93996847,29340119,2026-03-17T07:09:47Z,165,0,20,
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| 3788 |
CC-MAIN-2026-08,3788,19288,2559747521,95462111,29805726,2026-03-17T05:55:47Z,107,0,25,6
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CC-MAIN-2026-08,3792,19358,2583676932,94935645,30102585,2026-03-17T06:07:02Z,132,0,53,16
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CC-MAIN-2026-08,3793,19427,2572031898,90137747,28968302,2026-03-17T06:09:32Z,105,0,46,13
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CC-MAIN-2026-08,3794,19253,2554972711,91267853,28626707,2026-03-17T06:11:47Z,97,0,19,57
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| 3839 |
CC-MAIN-2026-08,3853,19421,2600785460,95558432,29812564,2026-03-17T07:01:47Z,91,0,25,23
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| 3840 |
CC-MAIN-2026-08,3854,19415,2580147551,97415893,31764437,2026-03-17T07:04:32Z,121,0,28,54
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| 3841 |
CC-MAIN-2026-08,3855,19536,2614933792,94440391,30708513,2026-03-17T07:04:32Z,107,0,22,54
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CC-MAIN-2026-08,3857,19572,2605718759,94764147,30438669,2026-03-17T07:09:47Z,155,0,30,
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CC-MAIN-2026-08,3863,19136,2568351093,99368510,32321209,2026-03-17T06:26:02Z,111,0,26,10
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CC-MAIN-2026-08,3865,19410,2544755697,95772161,29378374,2026-03-17T06:33:32Z,196,0,21,10
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| 3852 |
CC-MAIN-2026-08,3873,19612,2593908528,94259805,29231824,2026-03-17T06:53:17Z,93,0,20,40
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CC-MAIN-2026-08,3874,19566,2580367381,96080330,30149239,2026-03-17T06:58:03Z,107,0,22,31
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CC-MAIN-2026-08,3876,19600,2603702619,90688335,28842750,2026-03-17T07:04:32Z,149,0,24,54
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| 3855 |
CC-MAIN-2026-08,5000,19611,2544147305,91933944,29028493,2026-03-13T17:51:21Z,393,0,122,0
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CC-MAIN-2026-08,5002,19469,2581016243,91856903,29042422,2026-03-14T01:06:34Z,622,0,143,18
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| 3778 |
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CC-MAIN-2026-08,3778,19449,2588087997,94351499,29663502,2026-03-17T05:27:17Z,321,0,21,10
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CC-MAIN-2026-08,3780,19410,2570025021,95259821,29932495,2026-03-17T07:09:47Z,91,0,20,35
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CC-MAIN-2026-08,3782,19839,2626486825,92610103,29440267,2026-03-17T05:38:32Z,117,0,31,14
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CC-MAIN-2026-08,3783,19443,2592219168,94732660,30118327,2026-03-17T05:42:32Z,167,0,26,18
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| 3785 |
CC-MAIN-2026-08,3785,19376,2576474028,97185069,30961486,2026-03-17T05:46:02Z,167,0,32,59
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| 3840 |
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CC-MAIN-2026-08,3859,19663,2601629835,90661267,29135991,2026-03-17T07:13:17Z,109,0,22,0
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CC-MAIN-2026-08,3865,19410,2544755697,95772161,29378374,2026-03-17T06:33:32Z,196,0,21,10
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CC-MAIN-2026-08,3877,19448,2601114463,97843372,30394814,2026-03-17T07:13:17Z,100,0,31,0
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CC-MAIN-2026-08,5001,19479,2584193920,98160035,30333909,2026-03-13T17:51:21Z,240,0,274,0
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