The phrase denotes digital documents of the Quran formatted as Portable Document Format (PDF) files, wherein the text is visually enhanced with color to indicate Tajweed rules. Tajweed refers to the set of rules governing correct pronunciation during Quranic recitation. The color-coding acts as a visual aid to help reciters observe these rules accurately, influencing aspects like elongation of vowels, nasalization, and emphasis of certain consonants. For example, a specific color might signify when a letter requires a longer duration of pronunciation.
These resources aim to facilitate proper Quranic recitation, promoting accurate pronunciation and adherence to Tajweed principles. Historically, memorization and oral transmission were the primary methods for preserving the Quran; however, visual aids such as color-coded texts can support learners in understanding and applying Tajweed rules more effectively. The availability of these resources in a digital format allows for wider accessibility, benefitting individuals seeking to improve their recitation skills regardless of geographical location or access to traditional learning environments.