zaibihassan/Quranic-Recitation-Data

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🌟 Overview

Quranic Recitation Dataset (Word-by-Word Sync) is a highly optimized, production-ready dataset containing high-quality audio recitations of the Holy Quran synchronized at the word-by-word level.

This dataset features 34 world-renowned reciters, with every Surah (114 chapters) mapped precisely to millisecond-accurate word timestamps. It is designed for modern Islamic mobile and web applications — served via a Cloudflare Edge CDN with native range-request support for instant audio streaming and seeking.

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🚀 Key Features

• 34 Reciters × 114 Surahs — totaling 3,876 audio files with matching timing data.
• Optimized Audio — Mono-channel, 16kHz, 32kbps .opus format. Exceptional clarity at ultra-low bandwidth.
• Per-Surah Architecture — Each surah is a single .opus file. Seek to any ayah using the timing data — no need to download individual ayah files.
• Protocol Buffer Timing — Binary .pb timing files are ~33% smaller than JSON and parse instantly in any language.
• Cloudflare Edge CDN — Files are served from cdn.mualim.app with edge caching, CORS, and native HTTP 206 Partial Content for mobile audio seeking.
• Word-Level Accuracy — Timestamps map to standard Uthmani script word indices, enabling karaoke-style highlighting.

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📡 CDN Access

This dataset is served via a Cloudflare Worker that proxies HuggingFace with aggressive edge caching. You never need to download the 17GB repository locally.

Base URL

https://cdn.mualim.app

URL Format

{BASE_URL}/{slug}/{surah_number}.{opus|pb}

Quick Examples

# Audio — Mishari Rashid Al-Afasy, Surah Al-Fatihah
curl https://cdn.mualim.app/mishari-rashid-al-afasy-murattal-hafs/001.opus

# Timing — Same reciter, same surah (Protocol Buffer)
curl https://cdn.mualim.app/mishari-rashid-al-afasy-murattal-hafs/001.pb

# Range Request (for mobile seeking)
curl -H "Range: bytes=0-1024" \
  https://cdn.mualim.app/mishari-rashid-al-afasy-murattal-hafs/001.opus
# → 206 Partial Content ✅

CDN Features

Feature	Details
Edge Caching	max-age=31536000, immutable (1 year)
Range Requests	Native 206 Partial Content support
CORS	Access-Control-Allow-Origin: *
Stale Fallback	stale-if-error=604800 (7 days)
Fallback Origin	Direct HuggingFace if CDN cache misses

Direct HuggingFace Fallback

If the CDN is unavailable, you can fetch directly from HuggingFace:

https://huggingface.co/datasets/zaibihassan/Quranic-Recitation-Data/resolve/main/{Folder Name}/{Surah}/{File}

Note: Folder names on HuggingFace contain spaces and special characters (e.g., Mishari Rashid Al Afasy (Murattal – Hafs)). The CDN slug mapping handles this automatically.

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📂 Dataset Structure

The dataset is organized by Reciter Folder → Surah Number (001–114).

Each surah folder contains two files:

1. {surah}.opus — Per-surah audio file (full surah in one file)
2. {surah}.pb — Protocol Buffer word-by-word timing data

Quranic-Recitation-Data/
├── Abdul Basit Abdul Samad (Mujawwad – Hafs)/
│   ├── 001/
│   │   ├── 001.opus    (Full Surah Al-Fatihah audio)
│   │   └── 001.pb      (Word timestamps for all ayahs)
│   ├── 002/
│   │   ├── 002.opus
│   │   └── 002.pb
│   └── ...
├── Mishari Rashid Al Afasy (Murattal – Hafs)/
├── Alijon Qari/
└── ...

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⏱️ Timing Data Schema (Protocol Buffers)

The .pb timing files map every verse in a surah to word-level timestamps.

Protocol Buffer Schema (recitation.proto)

syntax = "proto3";
package recitation;

message WordSegment {
  int32 word_index_0_based = 1;
  int32 word_index_1_based = 2;
  int32 timestamp_from = 3;      // milliseconds from start of surah
  int32 timestamp_to = 4;        // milliseconds from start of surah
}

message VerseSegments {
  repeated WordSegment segments = 1;
}

message SurahTimestamps {
  map<string, VerseSegments> verses = 1;  // key = "surah:ayah" (e.g., "1:1")
}

How It Works

Each .pb file contains a SurahTimestamps message with all verses of that surah. The timestamps are relative to the start of the surah audio file, so you can:

1. Load the surah .opus audio
2. Decode the .pb timing data
3. To play a specific ayah, seek the audio to verses["1:3"].segments[0].timestamp_from milliseconds
4. Highlight words in real-time as currentTimeMs falls between each segment's timestamp_from and timestamp_to

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🔗 CDN Slug Map

The CDN uses URL-friendly slugs that map to the actual folder names on HuggingFace:

#	CDN Slug	Folder Name
1	abdul-basit-abdul-samad-mujawwad-hafs	Abdul Basit Abdul Samad (Mujawwad – Hafs)
2	abdul-basit-abdul-samad-murattal-hafs	Abdul Basit Abdul Samad (Murattal – Hafs)
3	abdul-rahman-al-sudais-murattal-hafs	Abdul Rahman Al Sudais (Murattal – Hafs)
4	abdullah-hamad-abu-sharida	Abdullah Hamad Abu Sharida
5	abu-bakr-al-shatri-murattal-hafs	Abu Bakr Al Shatri (Murattal – Hafs)
6	ahmed-ibn-ali-al-ajmy	Ahmed ibn Ali Al Ajmy
7	alijon-qari	Alijon Qari
8	alnufais	Alnufais
9	alzain-mohammad-ahmad	Alzain Mohammad Ahmad
10	ayman-suwaid-muallim	Ayman Suwaid (Muallim)
11	badr-al-turki	Badr Al Turki
12	bandar-baleela	Bandar Baleela
13	fatih-seferagic	Fatih Seferagic
14	hani-ar-rifai-murattal-hafs	Hani Ar Rifai (Murattal – Hafs)
15	idris-abkar	Idris Abkar
16	khalid-al-jalil-murattal-hafs	Khalid Al Jalil (Murattal – Hafs)
17	khalifa-al-tunaiji-murattal-hafs	Khalifa Al Tunaiji (Murattal – Hafs)
18	maher-al-muaiqly-murattal-hafs	Maher Al Muaiqly (Murattal – Hafs)
19	mahmoud-khalil-al-husary-mujawwad-hafs	Mahmoud Khalil Al Husary (Mujawwad – Hafs)
20	mahmoud-khalil-al-husary-mualim-hafs	Mahmoud Khalil Al Husary (Mualim – Hafs)
21	mahmoud-khalil-al-husary-murattal-hafs	Mahmoud Khalil Al Husary (Murattal – Hafs – Version 2)
22	mishari-rashid-al-afasy-murattal-hafs	Mishari Rashid Al Afasy (Murattal – Hafs)
23	mohamed-al-tablawi-murattal-hafs	Mohamed Al Tablawi (Murattal – Hafs)
24	muhammad-al-luhaidan	Muhammad Al Luhaidan
25	muhammad-siddiq-al-minshawi-kids	Muhammad Siddiq Al Minshawi (Kids)
26	muhammad-siddiq-al-minshawi-murattal-hafs	Muhammad Siddiq Al Minshawi (Murattal – Hafs)
27	nabil-ar-rifai	Nabil Ar Rifai
28	noreen-siddiq-duri-an-abu-amr	Noreen Siddiq (Duri 'an Abu Amr)
29	raad-mohammad-al-kurdi	Raad Mohammad Al Kurdi
30	saad-al-ghamdi-murattal-hafs	Saad Al Ghamdi (Murattal – Hafs)
31	saud-al-shuraim-murattal-hafs	Saud Al Shuraim (Murattal – Hafs)
32	surah-recitation-hady-toure	Surah Recitation – Hady Toure
33	tawfeeq-bin-saeed-as-sawaaigh	Tawfeeq bin Saeed As Sawaaigh
34	yasser-al-dosari-murattal-hafs	Yasser Al Dosari (Murattal – Hafs)

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📜 Data License & Usage

License: Apache-2.0

This dataset is completely free and open-source for personal, educational, and commercial projects under the Apache License 2.0. You are encouraged to integrate this directly into mobile apps (Flutter, React Native, iOS, Android) and web platforms.

Attribution: While not strictly required by the license, we appreciate attribution linking back to this dataset to support the ongoing development of open-source Islamic infrastructure.