QALAM
A way in,
your bridge to Arabic typography.
A guide to Arabic typography — built for designers who want to work with Arabic text thoughtfully.
How Arabic Works
كيف يعمل الخط العربيDirection, numbers, diacritics, spacing — the fundamental mechanics of Arabic text.
Anatomy
التشريحTeeth, bowls, connections, proportions — the structural components of Arabic letterforms.
Script Styles
أنماط الخطوطFrom Naskh to Diwani — the major Arabic script traditions, each with its own rules and character.
How Arabic Works
RTL
من اليمين إلى اليسار
Right-to-left text direction
Right-to-left (RTL) is the writing direction used by Arabic, meaning text flows from the right side of the page to the left. This isn't just a visual flip, it shapes how Arabic typography behaves in layout, reading order, and composition.
Numbers in Arabic Text
الأرقام في النص العربي
How numerals behave in RTL context
Numbers inside Arabic text can behave differently than designers expect, because Arabic is written right-to-left while numerals are typically read left-to-right. This creates a mixed-direction situation where the surrounding sentence flows one way, but the number itself follows its own internal order.
Diacritics
التشكيل
Vocalization marks above and below letters
Diacritics in Arabic (التشكيل) are small marks placed above or below letters to clarify pronunciation, grammar, or meaning. They can indicate vowels, emphasis, and other linguistic information that is not always written in everyday text, but becomes essential in contexts like the Qur'an, education, poetry, and formal writing.
Contextual Letterforms
الأشكال السياقية
Letters change shape based on position
Arabic letters change shape depending on where they appear in a word. A single letter can have different forms when it is isolated, at the beginning, in the middle, or at the end of a word. These are called contextual letterforms, and they are a core reason Arabic typography behaves differently than Latin.
Dot Placement
مواضع النقاط
How dots distinguish letters that share a base shape
Arabic has 28 letters, but only about 18 distinct base shapes. What distinguishes many letters from each other is the number and position of dots (نقط) placed above or below the skeleton of the letter. For example, ب (bāʾ), ت (tāʾ), and ث (thāʾ) share the same base form but are differentiated by one dot below, two dots above, and three dots above, respectively.
Ligatures
الرُبط
When letters merge into a single combined form
A ligature is a combined glyph formed when two or more letters merge into a single shape. In Arabic, some ligatures are mandatory — most notably لا (lam-alef), which must always be rendered as a single form, never as two separate letters. Other ligatures are optional and stylistic, appearing more frequently in calligraphic or display typefaces.
Word Spacing & Boundaries
المسافات والحدود
How space and connection define word edges
In Arabic, word boundaries are defined by breaks in the connecting stroke — not just by whitespace. Because Arabic is a connected script, letters within a word flow together, and the gap between words can sometimes be subtle. This makes word spacing a more sensitive typographic decision than in Latin, where letters are naturally discrete.
Vowelization (Tashkeel)
التشكيل
When and why Arabic fully marks its vowels
Arabic script is fundamentally consonantal — the base letters represent consonants, and short vowels are typically omitted in everyday writing. Readers infer vowels from context, grammar, and familiarity with the language. Full vowelization (تشكيل) adds diacritical marks to specify every vowel, removing ambiguity at the cost of visual density.
Hamza
الهمزة
The glottal stop and its shifting carriers
Hamza (ء) represents the glottal stop in Arabic — a sound made by briefly closing the throat. Unlike most Arabic letters, hamza does not have a fixed position on the baseline. Instead, it can appear independently or sit on a "carrier" letter: alef (أ / إ), waw (ؤ), or yāʾ (ئ), depending on the surrounding vowel context.
Bidirectional Text
النص ثنائي الاتجاه
When RTL and LTR scripts share a line
Bidirectional (bidi) text occurs whenever Arabic (right-to-left) and Latin (left-to-right) appear in the same line. This is common in modern digital interfaces, academic writing, branding, and any context where Arabic text includes English terms, URLs, code, or product names. The Unicode Bidirectional Algorithm (UBA) automatically determines the visual order of mixed-direction text.
Arabic Numerals
الأرقام العربية
The history and forms of number systems
The digits 0–9 used worldwide are called "Arabic numerals" because they reached Europe through Arabic-speaking scholars who transmitted them from India. But the numerals used in much of the Arabic-speaking world today — ٠١٢٣٤٥٦٧٨٩ — look quite different and are called Eastern Arabic-Indic numerals. Persian and Urdu use their own variants (e.g., ۴ and ۶ differ from their Arabic counterparts).
Shaddah & Sukun
الشدّة والسكون
Doubling consonants and marking vowel absence
Shaddah (شدّة) is a diacritical mark shaped like a small "w" placed above a letter to indicate that the consonant is doubled — pronounced twice in succession. Sukun (سكون) is a small circle placed above a letter to indicate the absence of a vowel after that consonant. Together, they are essential to the Arabic diacritical system and directly affect pronunciation, rhythm, and meaning.
Kashida
الكشيدة
Horizontal elongation for justification
Kashida (ـ), also known as Tatweel, is a horizontal elongation used in Arabic script to extend the connection between letters. It is part of the script's natural flexibility, allowing a word to expand without changing its spelling or meaning.
Anatomy
Tooth
السِّن
The vertical stroke in Arabic letters
A tooth (سن) is a small pointed peak in an Arabic stroke that rises and drops back to the baseline. It's one of the building blocks that creates Arabic "rhythm" across a word, because repeating teeth form a visible beat the eye can follow.
Tarwees (Serif)
الترويس
Serif-like finishing strokes in Arabic letterforms
Tarwees (ترويس) is an Arabic term often used to describe serif-like finishing strokes in letterforms, similar in role to serifs in Latin type. It refers to small structural "caps" or terminal treatments that can make a stroke feel anchored, directional, or more calligraphic.
Baseline & Descenders
خط الأساس والنازلات
Where Arabic letters sit, rise, and drop
The baseline in Arabic is the invisible line on which most letters rest and along which the connecting stroke travels. Unlike Latin, where the baseline is relatively stable, Arabic baselines can shift — especially in calligraphic scripts like Nastaʿliq, where words cascade diagonally and the baseline "hangs" rather than sitting flat.
Bowl / Eye (ʿAyn)
العين
Enclosed and semi-enclosed counter spaces
A bowl in Arabic letterforms refers to the enclosed or semi-enclosed space created by a curved stroke — the Arabic equivalent of what Latin typography calls a "counter." Letters like ع (ʿayn), ص (ṣād), and ق (qāf) contain distinct bowl shapes that define their identity and help readers distinguish them at speed.
Rasm (Skeleton)
الرسم
The base letter shapes before dots and marks
Rasm (رسم) refers to the skeletal structure of Arabic letters — the base shapes before any dots or diacritical marks are added. Arabic has approximately 18 distinct rasm shapes that generate all 28 letters through the addition of dots. This means the script is built on a smaller set of core forms than it might first appear, and understanding rasm reveals the deeper logic of the alphabet.
Nuqta (Dot Unit)
النقطة
The rhombic dot as a unit of calligraphic proportion
In Arabic calligraphy, the nuqta (نقطة) is more than just a dot that distinguishes letters — it is the fundamental unit of measurement that governs proportion. A nuqta is created by pressing the reed pen (qalam) at a specific angle to produce a rhombic (diamond-shaped) mark. The size of this mark depends on the pen's width, and all letter proportions are expressed as multiples of nuqta.
Swash / Tail (Dhanab)
الذَّنَب
Extended finishing strokes on Arabic letters
A swash or tail (ذنب, dhanab) is an extended stroke that trails off from a letter, typically descending or sweeping horizontally. In Arabic, tails appear on letters like ر (rāʾ), و (wāw), ن (nūn in final position), and ي (yāʾ in final position). These strokes are one of the most expressive elements in Arabic letterforms, and they vary dramatically between scripts.
Ascender (Alef Height)
الصاعدات
Vertical strokes that define script proportions
Ascenders in Arabic are the vertical strokes that rise above the body of the text — most prominently in letters like ا (alef), ل (lām), ك (kāf), and ط (ṭāʾ). The height of alef is the reference unit for a script's vertical proportions, traditionally measured in nuqta, and it sets the visual scale for the entire alphabet.
Connecting Stroke (Waslah)
الوَصلة
The horizontal joins between Arabic letters
The connecting stroke (وصلة, waṣlah) is the horizontal or near-horizontal line that joins one letter to the next within a word. It is the structural thread that makes Arabic a connected script. Every joining letter transitions to its neighbor through a connecting stroke, and the character of this stroke — its thickness, angle, and length — is one of the defining features of each script style.
Loop (Ḥalqa)
الحَلقة
Closed circular forms within Arabic letters
A loop (حلقة, ḥalqa) is a fully closed circular or oval form found within certain Arabic letters. The most recognizable loop appears in م (mīm) and هـ (hāʾ) in their medial forms, where the stroke turns back on itself to create a complete enclosure. Loops differ from bowls in that they are typically rounder and fully closed.
Finial / Terminal
النهاية
How Arabic letter strokes end
A finial or terminal is the endpoint of a stroke — how a letter's line concludes. In Arabic calligraphy, terminals carry strong stylistic identity: a stroke might end with a sharp cut, a gentle taper, a rounded ball, a return stroke, or an upward flick. The terminal treatment is directly tied to the tool used (reed pen, brush, or digital construction) and to the script tradition being followed.
Script Styles
Naskh
النسخ
The script of book culture and clarity
Naskh (نسخ) is one of the most widely used Arabic scripts, developed and refined as Arabic writing became more systematized during the Abbasid era. It became closely associated with book culture because it balanced beauty with clarity, making it well suited for continuous reading and careful copying.
Ruqʿah
الرقعة
The practical everyday script
Ruqʿah (رقعة) is a practical Arabic script that became widely standardized in the Ottoman period, shaped by the need for fast, consistent everyday writing. In that sense, it plays a role similar to cursive handwriting in Latin: a script built for speed, ease, and daily use rather than display.
Thuluth
الثُّلث
Classical script of monumentality and rhythm
Thuluth (ثلث) is a classical Arabic script developed during the Abbasid era, when Arabic calligraphy became more systematized and governed by proportion. It is closely associated with the calligraphic tradition of the "six scripts," and is often linked to Ibn Muqla's proportional approach, later refined by masters such as Yaqut al-Mustaʿsimi.
Nastaʿliq
النستعليق
The lyrical script of Persian literary culture
Nastaʿliq (نستعليق) is a classical script that emerged in Persia, shaped by blending qualities associated with Naskh and Taʿliq. It became closely tied to Persian literary culture and was widely used for poetry and manuscripts, where the script's form could carry tone and mood alongside meaning.
Diwani
الديواني
The ornate script of Ottoman authority
Diwani (ديواني) is an Ottoman-era script developed for the imperial court and administrative writing. It became known as a script of formality and prestige, used in official documents where the writing itself signaled authority.
Kufi
الكوفي
The angular geometric script
Kufi (كوفي) is one of the earliest major styles of Arabic script, strongly associated with early Qur'anic manuscripts and monumental inscriptions. It represents a more constructed approach to writing, and it became foundational in the visual language of early Islamic art, especially where text needed to work as both reading and form.
Maghrebi
المغربي
The North African script tradition
Maghrebi (مغربي) refers to a family of Arabic script styles that developed in North and West Africa, shaped through regional manuscript traditions and local calligraphic practice. It became closely associated with Qur'anic copying, scholarly writing, and book culture across the Maghreb and al-Andalus, where the script formed its own recognizable typographic identity.