Datasets:

open-index
/

open-html

+Open Data Commons Attribution License (ODC-By) v1.0
+You are free to:
+- Share: copy, distribute, and use the database.
+- Create: produce works from the database.
+- Adapt: modify, transform, and build upon the database.
+As long as you:
+- Attribute: You must attribute any public use of the database,
+  or works produced from the database, in the manner specified
+  in the ODC-By license.

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+---
+license: odc-by
+task_categories:
+  - text-generation
+  - text-classification
+language:
+  - en
+size_categories:
+  - 100M<n<1B
+tags:
+  - html
+  - web-crawl
+  - common-crawl
+---
+# OpenHTML — CC-MAIN-2026-12
+Raw HTML pages from Common Crawl with structured metadata extracted from
+WARC records, HTTP response headers, and HTML `<head>` tags.
+## Stats
+| Metric | Value |
+|--------|-------|
+| Crawl | CC-MAIN-2026-12 |
+| Shards | 0 |
+| Documents | 0 |
+| Raw HTML | 0 B |
+| Body (parquet) | 0 B |
+| Parquet (zstd) | 0 B |
+## Schema
+Each row contains 24 columns:
+| Column | Type | Description |
+|--------|------|-------------|
+| `url` | string | Full page URL |
+| `warc_date` | string | Crawl timestamp (RFC3339) |
+| `warc_record_id` | string | WARC record UUID |
+| `warc_filename` | string | Source WARC file basename |
+| `http_status` | int32 | HTTP status (always 200) |
+| `content_type` | string | Content-Type header |
+| `charset` | string | Character encoding |
+| `content_language` | string | HTTP Content-Language header |
+| `http_server` | string | Server software header |
+| `http_last_modified` | string | Last-Modified header |
+| `host` | string | Hostname (e.g. `www.example.com`) |
+| `domain` | string | Registered domain (eTLD+1) |
+| `path` | string | URL path |
+| `query` | string | URL query string |
+| `html_lang` | string | `<html lang="...">` attribute |
+| `title` | string | Page `<title>` |
+| `description` | string | `<meta name="description">` |
+| `og_title` | string | `og:title` Open Graph tag |
+| `og_description` | string | `og:description` Open Graph tag |
+| `og_image` | string | `og:image` Open Graph tag |
+| `og_type` | string | `og:type` Open Graph tag |
+| `canonical_url` | string | `<link rel="canonical">` href |
+| `html_length` | int64 | Raw HTML byte count |
+| `body` | string | HTML body (truncated at 256 KB) |
+## Usage
+```python
+from datasets import load_dataset
+# Load a single shard
+ds = load_dataset("open-index/open-html", data_files="data/CC-MAIN-2026-12/00000.parquet")
+# Load entire crawl
+ds = load_dataset("open-index/open-html", data_files="data/CC-MAIN-2026-12/*.parquet")
+# Filter by language
+en = ds.filter(lambda r: (r["html_lang"] or "").startswith("en"))
+# Filter by domain
+wiki = ds.filter(lambda r: r["domain"] == "wikipedia.org")
+```
+## Data Source
+Common Crawl — filtered to HTTP 200 responses with `text/html` content type.
+Body is truncated at 256 KB per record.
+## License
+Open Data Commons Attribution License (ODC-By).

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1	+ crawl_id,file_idx,rows,html_bytes,body_bytes,parquet_bytes,created_at,dur_download_s,dur_extract_s,dur_export_s,dur_publish_s,peak_rss_mb