Knowledge / English / Copywriting

Copywriting

English (BA) · Professional writing · free study notes for exams, placements and interviews

In short

Copywriting is writing words whose purpose is to make a defined audience act — buy, enquire, register, download, donate or vote — and it is measured by that action, not by applause. It sits at the centre of advertising, marketing and e-commerce: headlines, body copy, taglines, scripts, packaging, emails, landing pages, app notifications and performance ads. For a BA English student it is examined in Professional/Creative Writing, Advertising and Media papers under UGC CBCS and in communication-skills modules of the AICTE model curriculum, usually as copy-writing exercises, critiques of real advertisements and short notes on AIDA, USP and the ASCI code. In Indian hiring it is tested by a timed copy test — write a headline and 50 words of body copy for a given brief — in agencies (Ogilvy India, Lowe Lintas, Leo Burnett, Dentsu, Wunderman Thompson), in-house teams at Flipkart, Zomato, Nykaa, Byju's, Zerodha and Asian Paints, and across SaaS and D2C startups.

Explained

What copywriting is, and what it is not

Anatomy of an advertisement and how each part works

Classic copy formulas (how they are examined and used)

  1. AIDA — Attention, Interest, Desire, Action. The default exam answer; works for long-form print, landing pages, sales letters. Extended as AIDCA (adding Conviction) and AIDAS (adding Satisfaction/retention).
  2. PAS — Problem, Agitate, Solve. Best for performance ads and problem-led categories (insurance, EdTech, pest control).
  3. FAB / FBA — Feature, Advantage, Benefit. Converts a spec sheet into a reason to buy: *5,000 mAh (feature) → two days per charge (advantage) → no power bank on a Mumbai local commute (benefit)*.
  4. 4 Ps — Promise, Picture, Proof, Push. Useful for direct mail and e-mail.
  5. ACCA — Awareness, Comprehension, Conviction, Action; used in public-service and social campaigns (polio, tobacco, road safety).
  6. USP (Rosser Reeves) — one specific, competitor-exclusive, demand-pulling claim. Brand image (Ogilvy) — long-term personality over single claims. Positioning (Trout & Ries) — occupying a slot in the mind relative to rivals.
  7. Hierarchy-of-effects / DAGMAR — objectives set as measurable communication steps (awareness → comprehension → conviction → action), which is how campaign effectiveness questions are framed.
  8. Rhetorical devices: alliteration, rhyme, pun, antithesis, repetition, rule of three, hyperbole, metaphor. Indian copy also uses code-mixing (Hinglish) and transliteration — "Thanda matlab Coca-Cola", "Daag Achhe Hain".

Writing for each medium

Process, revision and testing

  1. Immerse: read the brief, use the product, read reviews and customer-care transcripts, talk to salespeople; collect the customer's own vocabulary.
  2. Position: write the single-minded proposition in one sentence before writing any copy.
  3. Generate: write 15–25 headlines before judging any of them; separate generation from editing.
  4. Draft: write long, then cut — typically 30–50% shorter in the second pass.
  5. Edit for: one idea per sentence, verbs over nouns, concrete over abstract, no unsupported superlatives, consistent tense and person, Indian spelling and number conventions (lakh/crore where the audience uses them).
  6. Proof and check: brand name spelling, price, dates, offer terms, URL, phone number, discount arithmetic, disclaimer presence.
  7. Test: A/B test one variable at a time (headline, offer, CTA, image), run to a sample large enough to be meaningful, and report confidence, not just the winner.
  8. Measure and iterate: CTR, conversion rate, cost per acquisition, ROAS, bounce rate, scroll depth, unsubscribe rate; attribute by campaign and creative.

Indian law, codes and regulators every copywriter must know

Key points

Formulas and examples

CTR (click-through rate) = Clicks ÷ Impressions × 100 (%)
Conversion rate = Conversions ÷ Clicks × 100 (%)
CPC (cost per click) = Spend ÷ Clicks (₹)
CPM (cost per 1,000 impressions) = Spend ÷ Impressions × 1,000 (₹)
CPA (cost per acquisition) = Spend ÷ Conversions (₹)
ROAS (return on ad spend) = Revenue from ads ÷ Ad spend (a ratio, no unit)
Flesch Reading Ease = 206.835 − 1.015 × (Words ÷ Sentences) − 84.6 × (Syllables ÷ Words) (score 0–100; higher = easier)
Gunning Fog Index = 0.4 × [(Words ÷ Sentences) + 100 × (Complex words ÷ Words)] (≈ years of schooling needed; complex word = 3+ syllables)
Radio/VO script length ≈ Duration (s) × 2.5 words per second

Example 1 — diagnosing a D2C campaign. An Instagram campaign for a ₹1,200 skincare kit gets 2,40,000 impressions, 4,800 clicks and 192 orders on a spend of ₹36,000.

Example 2 — A/B testing two headlines. Same audience, 12,000 impressions each.

VariantHeadlineClicksCTRConversionsConv. per clickConv. per 1,000 impressions
A"Premium cotton shirts online"2402.00%125.0%1.00
B"Shirts that survive a Chennai summer"3002.50%217.0%1.75

Example 3 — readability check on a 100-word paragraph. Sample: 100 words, 8 sentences, 142 syllables, 9 words of three or more syllables.

Example 4 — e-mail copy economics. 50,000 addresses, 97% delivered, 22% open rate, 9% click-through on opens, 3% of clickers buy; contribution ₹400 per order; platform cost ₹0.12 per delivered mail.

Example 5 — freelance invoice for a landing page. 1,200 words at ₹4 per word.

Copy typeLengthPrimary metricTypical Indian use
Hoarding≤7 wordsRecall, footfallMetro pillars, highway brand launch
Radio spot70–80 words (30 s)Reach, recallRegional FM for retail sales, govt. schemes
Search ad30-char headlinesCTR, CPAInsurance, EdTech, travel keywords
Landing page300–800 wordsConversion rateSaaS demos, loan applications
Long-form sales letter1,000–2,500 wordsOrders, ROASDirect-to-consumer health, courses
Packaging20–60 wordsShelf pick-upFMCG; must carry legal declarations

Where it is used

Interview questions

Common mistakes

Related topics

Content writing · Advertising and brand management · Editing and proofreading · Translation and transcreation · Digital marketing and SEO · Media law and ethics

Open in the Knowledge reader →Find jobs →