Publish 4 shards CC-MAIN-2026-08/03777–03876
Browse files- README.md +11 -11
- data/CC-MAIN-2026-08/03777.parquet +3 -0
- data/CC-MAIN-2026-08/03854.parquet +3 -0
- data/CC-MAIN-2026-08/03855.parquet +3 -0
- data/CC-MAIN-2026-08/03876.parquet +3 -0
- stats.csv +7 -3
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 **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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| 172 |
| HTML extracted (uncompressed) | 16.4 TB | ~295 TB | — |
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| 173 |
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| Packed markdown WARC (.md.warc.gz) | ~
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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 610.
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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 488h
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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 **136,293,801 documents across 7309 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 7309 files of CC-MAIN-2026-08 (136,293,801 pages total), projected to the full crawl of 100,000 WARC files.
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| Stage | 7309 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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| 173 |
+
| Packed markdown WARC (.md.warc.gz) | ~287.0 GB | ~3.7 TB | **-98.3%** vs HTML |
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| Final Parquet (Zstd level 19) | 193.6 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 610.5 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 68.3%.
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End to end: ~5.8 TB of raw gzipped WARCs becomes **193.6 GB of Parquet** — a **96.7% total reduction** — containing 136,293,801 clean markdown documents.
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### Processing Times
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Pipeline timings across 7309 shards of CC-MAIN-2026-08:
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```
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Download (raw WARC) ████████████████████████ total 488h 49m 20s avg 4m 0s
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Convert (HTML → MD) █░░░░░░░░░░░░░░░░░░░░░░░ total 17h 27m 50s avg 8s
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Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 112h 37m 47s avg 55s
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Publish (HuggingFace) ██░░░░░░░░░░░░░░░░░░░░░░ total 43h 10m 1s avg 21s
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```
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### Dataset Charts
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data/CC-MAIN-2026-08/03777.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:55b72232c51fdb98cacf6f12c8b39d9b1badff036c4a766c739ad0baf452b39b
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size 30602215
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data/CC-MAIN-2026-08/03854.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:28039f475e4e88552a8988ede9d3ace76b58d39d3a17e32f01ffe15c33b1c9db
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size 31764437
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data/CC-MAIN-2026-08/03855.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:3be80c1742c3ab4bdb3c9c69e6a95573326ffc4ed2e20bd4c1406f701f73ff6e
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size 30708513
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data/CC-MAIN-2026-08/03876.parquet
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version https://git-lfs.github.com/spec/v1
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oid sha256:bcbd447cf8c64c4b91fa7ef298cb41586d590be48979609df3f7a55139267743
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size 28842750
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stats.csv
CHANGED
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@@ -3764,7 +3764,7 @@ CC-MAIN-2026-08,3760,19453,2594103737,90589983,28169268,2026-03-17T05:31:47Z,153
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| 3764 |
CC-MAIN-2026-08,3761,19453,2575026874,93901867,29062496,2026-03-17T05:53:02Z,126,0,40,32
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| 3765 |
CC-MAIN-2026-08,3762,19253,2556775879,89084194,28187196,2026-03-17T05:38:32Z,281,0,21,14
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| 3766 |
CC-MAIN-2026-08,3763,19426,2611509424,93934716,30441326,2026-03-17T04:49:32Z,138,0,24,9
|
| 3767 |
-
CC-MAIN-2026-08,3764,19644,2617458285,97405723,30323209,2026-03-17T07:01:47Z,107,0,29,
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| 3768 |
CC-MAIN-2026-08,3765,19432,2556412890,90651281,28805238,2026-03-17T04:56:17Z,178,0,21,54
|
| 3769 |
CC-MAIN-2026-08,3766,19352,2566236222,94248102,29418747,2026-03-17T04:59:47Z,176,0,18,4
|
| 3770 |
CC-MAIN-2026-08,3767,19578,2609898329,89688041,29252769,2026-03-17T05:01:47Z,176,0,20,33
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|
@@ -3775,6 +3775,7 @@ CC-MAIN-2026-08,3773,19461,2581225276,91836377,28992519,2026-03-17T05:15:47Z,131
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|
| 3775 |
CC-MAIN-2026-08,3774,19658,2622074615,93869528,29170435,2026-03-17T05:17:47Z,97,0,21,8
|
| 3776 |
CC-MAIN-2026-08,3775,19530,2621416702,92796830,28456262,2026-03-17T05:19:47Z,117,0,26,11
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| 3777 |
CC-MAIN-2026-08,3776,19584,2582885329,95393371,30031363,2026-03-17T05:22:02Z,100,0,28,48
|
|
|
|
| 3778 |
CC-MAIN-2026-08,3778,19449,2588087997,94351499,29663502,2026-03-17T05:27:17Z,321,0,21,10
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| 3779 |
CC-MAIN-2026-08,3779,19199,2549960728,93066368,29304842,2026-03-17T05:31:47Z,153,0,29,29
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| 3780 |
CC-MAIN-2026-08,3781,19404,2583276945,90583350,29653081,2026-03-17T05:36:02Z,214,0,41,47
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@@ -3801,7 +3802,7 @@ CC-MAIN-2026-08,3806,19264,2569926980,88288986,28523471,2026-03-17T06:46:02Z,159
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| 3801 |
CC-MAIN-2026-08,3808,19431,2583412440,90379755,29174520,2026-03-17T06:49:02Z,177,0,20,53
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| 3802 |
CC-MAIN-2026-08,3809,19668,2678184219,94220964,30501820,2026-03-17T06:53:17Z,131,0,22,40
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| 3803 |
CC-MAIN-2026-08,3810,19787,2622497429,92580755,30078686,2026-03-17T06:58:02Z,121,0,25,31
|
| 3804 |
-
CC-MAIN-2026-08,3812,19419,2570727708,91280717,29306060,2026-03-17T07:01:47Z,166,0,25,
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| 3805 |
CC-MAIN-2026-08,3813,19530,2566347087,91041349,28673971,2026-03-17T05:17:47Z,104,0,29,8
|
| 3806 |
CC-MAIN-2026-08,3814,19471,2588388404,95609519,29769349,2026-03-17T05:19:47Z,109,0,24,11
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| 3807 |
CC-MAIN-2026-08,3816,19450,2602257308,94180181,28967115,2026-03-17T05:25:17Z,114,0,20,14
|
|
@@ -3833,7 +3834,9 @@ CC-MAIN-2026-08,3848,19544,2603467536,93476329,30122454,2026-03-17T06:49:02Z,148
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|
| 3833 |
CC-MAIN-2026-08,3849,19521,2572850854,90431918,28652060,2026-03-17T06:53:17Z,128,0,21,40
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| 3834 |
CC-MAIN-2026-08,3850,19505,2586040838,95227686,30295736,2026-03-17T06:58:02Z,97,0,29,31
|
| 3835 |
CC-MAIN-2026-08,3852,19439,2606300625,99921094,30536511,2026-03-17T06:58:02Z,133,0,36,31
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| 3836 |
-
CC-MAIN-2026-08,3853,19421,2600785460,95558432,29812564,2026-03-17T07:01:47Z,91,0,25,
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|
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| 3837 |
CC-MAIN-2026-08,3863,19136,2568351093,99368510,32321209,2026-03-17T06:26:02Z,111,0,26,10
|
| 3838 |
CC-MAIN-2026-08,3864,19548,2574110045,95496920,30202016,2026-03-17T06:27:47Z,174,0,20,18
|
| 3839 |
CC-MAIN-2026-08,3865,19410,2544755697,95772161,29378374,2026-03-17T06:33:32Z,196,0,21,10
|
|
@@ -3845,6 +3848,7 @@ CC-MAIN-2026-08,3871,19476,2616117602,93489074,29508923,2026-03-17T06:49:02Z,164
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|
| 3845 |
CC-MAIN-2026-08,3872,19543,2612877676,92754266,29392491,2026-03-17T06:53:17Z,98,0,29,40
|
| 3846 |
CC-MAIN-2026-08,3873,19612,2593908528,94259805,29231824,2026-03-17T06:53:17Z,93,0,20,40
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| 3847 |
CC-MAIN-2026-08,3874,19566,2580367381,96080330,30149239,2026-03-17T06:58:03Z,107,0,22,31
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|
|
|
| 3848 |
CC-MAIN-2026-08,5000,19611,2544147305,91933944,29028493,2026-03-13T17:51:21Z,393,0,122,0
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| 3849 |
CC-MAIN-2026-08,5001,19479,2584193920,98160035,30333909,2026-03-13T17:51:21Z,240,0,274,0
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| 3850 |
CC-MAIN-2026-08,5002,19469,2581016243,91856903,29042422,2026-03-14T01:06:34Z,622,0,143,18
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|
|
|
| 3764 |
CC-MAIN-2026-08,3761,19453,2575026874,93901867,29062496,2026-03-17T05:53:02Z,126,0,40,32
|
| 3765 |
CC-MAIN-2026-08,3762,19253,2556775879,89084194,28187196,2026-03-17T05:38:32Z,281,0,21,14
|
| 3766 |
CC-MAIN-2026-08,3763,19426,2611509424,93934716,30441326,2026-03-17T04:49:32Z,138,0,24,9
|
| 3767 |
+
CC-MAIN-2026-08,3764,19644,2617458285,97405723,30323209,2026-03-17T07:01:47Z,107,0,29,23
|
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CC-MAIN-2026-08,3765,19432,2556412890,90651281,28805238,2026-03-17T04:56:17Z,178,0,21,54
|
| 3769 |
CC-MAIN-2026-08,3766,19352,2566236222,94248102,29418747,2026-03-17T04:59:47Z,176,0,18,4
|
| 3770 |
CC-MAIN-2026-08,3767,19578,2609898329,89688041,29252769,2026-03-17T05:01:47Z,176,0,20,33
|
|
|
|
| 3775 |
CC-MAIN-2026-08,3774,19658,2622074615,93869528,29170435,2026-03-17T05:17:47Z,97,0,21,8
|
| 3776 |
CC-MAIN-2026-08,3775,19530,2621416702,92796830,28456262,2026-03-17T05:19:47Z,117,0,26,11
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CC-MAIN-2026-08,3776,19584,2582885329,95393371,30031363,2026-03-17T05:22:02Z,100,0,28,48
|
| 3778 |
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CC-MAIN-2026-08,3777,19513,2589142734,97489949,30602215,2026-03-17T07:04:32Z,105,0,24,0
|
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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-2026-08,3779,19199,2549960728,93066368,29304842,2026-03-17T05:31:47Z,153,0,29,29
|
| 3781 |
CC-MAIN-2026-08,3781,19404,2583276945,90583350,29653081,2026-03-17T05:36:02Z,214,0,41,47
|
|
|
|
| 3802 |
CC-MAIN-2026-08,3808,19431,2583412440,90379755,29174520,2026-03-17T06:49:02Z,177,0,20,53
|
| 3803 |
CC-MAIN-2026-08,3809,19668,2678184219,94220964,30501820,2026-03-17T06:53:17Z,131,0,22,40
|
| 3804 |
CC-MAIN-2026-08,3810,19787,2622497429,92580755,30078686,2026-03-17T06:58:02Z,121,0,25,31
|
| 3805 |
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CC-MAIN-2026-08,3812,19419,2570727708,91280717,29306060,2026-03-17T07:01:47Z,166,0,25,23
|
| 3806 |
CC-MAIN-2026-08,3813,19530,2566347087,91041349,28673971,2026-03-17T05:17:47Z,104,0,29,8
|
| 3807 |
CC-MAIN-2026-08,3814,19471,2588388404,95609519,29769349,2026-03-17T05:19:47Z,109,0,24,11
|
| 3808 |
CC-MAIN-2026-08,3816,19450,2602257308,94180181,28967115,2026-03-17T05:25:17Z,114,0,20,14
|
|
|
|
| 3834 |
CC-MAIN-2026-08,3849,19521,2572850854,90431918,28652060,2026-03-17T06:53:17Z,128,0,21,40
|
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CC-MAIN-2026-08,3850,19505,2586040838,95227686,30295736,2026-03-17T06:58:02Z,97,0,29,31
|
| 3836 |
CC-MAIN-2026-08,3852,19439,2606300625,99921094,30536511,2026-03-17T06:58:02Z,133,0,36,31
|
| 3837 |
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CC-MAIN-2026-08,3853,19421,2600785460,95558432,29812564,2026-03-17T07:01:47Z,91,0,25,23
|
| 3838 |
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CC-MAIN-2026-08,3854,19415,2580147551,97415893,31764437,2026-03-17T07:04:32Z,121,0,28,0
|
| 3839 |
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CC-MAIN-2026-08,3855,19536,2614933792,94440391,30708513,2026-03-17T07:04:32Z,107,0,22,0
|
| 3840 |
CC-MAIN-2026-08,3863,19136,2568351093,99368510,32321209,2026-03-17T06:26:02Z,111,0,26,10
|
| 3841 |
CC-MAIN-2026-08,3864,19548,2574110045,95496920,30202016,2026-03-17T06:27:47Z,174,0,20,18
|
| 3842 |
CC-MAIN-2026-08,3865,19410,2544755697,95772161,29378374,2026-03-17T06:33:32Z,196,0,21,10
|
|
|
|
| 3848 |
CC-MAIN-2026-08,3872,19543,2612877676,92754266,29392491,2026-03-17T06:53:17Z,98,0,29,40
|
| 3849 |
CC-MAIN-2026-08,3873,19612,2593908528,94259805,29231824,2026-03-17T06:53:17Z,93,0,20,40
|
| 3850 |
CC-MAIN-2026-08,3874,19566,2580367381,96080330,30149239,2026-03-17T06:58:03Z,107,0,22,31
|
| 3851 |
+
CC-MAIN-2026-08,3876,19600,2603702619,90688335,28842750,2026-03-17T07:04:32Z,149,0,24,0
|
| 3852 |
CC-MAIN-2026-08,5000,19611,2544147305,91933944,29028493,2026-03-13T17:51:21Z,393,0,122,0
|
| 3853 |
CC-MAIN-2026-08,5001,19479,2584193920,98160035,30333909,2026-03-13T17:51:21Z,240,0,274,0
|
| 3854 |
CC-MAIN-2026-08,5002,19469,2581016243,91856903,29042422,2026-03-14T01:06:34Z,622,0,143,18
|