# AI Letterhead Generator

> An AI letterhead generator designs the branded top (and often bottom) of your company paper — logo, colours, a rule and the contact block — from a short description. On Kenerate AI, GPT Image 2.5 Sunburst takes your logo as a reference and draws a header band or a full A4 or US Letter page at 7.2 credits a design at 1K (21 at 4K). The result is an image (PNG, JPG or WebP), not an editable Word file: put it in the header in Word or Google Docs and type the address, phone and email as real text, so they're always spelled right and easy to change.

URL: https://kenerateai.com/ai-letterhead-generator
Publisher: Kenerate AI (https://kenerateai.com)
Last updated: 20 October 2026

## Key facts
- Output: Image — PNG, JPG or WebP (GPT Image 2.5 Sunburst)
- Editable Word file?: No — place the image in Word's header; type the text
- US Letter: 8.5×11 in · 2550×3300 px at 300 DPI
- A4: 210×297 mm · 2480×3508 px at 300 DPI
- Ratios to pick: 4:1 or 3:1 header band · 8:1 footer strip · 3:4 full page
- Logo: Attach it as a reference (up to 16 images)
- Free start: 25 starter credits · Qwen Image 3.0 on the free plan
- Watermark: None

## Steps
1. Open Image Studio — Go to /app/image and pick GPT Image 2.5 Sunburst (or Nano Banana 2.1 for a 4:1 banner). Sign in free for 25 starter credits.
2. Attach your logo — Add your logo as a reference — no logo yet? Make one with the AI logo generator first.
3. Describe the header — Colours, style, where the logo sits, and only short words in quotes such as the company name. Leave contact details for Word.
4. Put it in Word or Docs — Download the PNG, open Insert > Header in Word (or Insert > Headers & footers in Google Docs), add the picture, then type your contact block under it.

## In depth

### Letterhead sizes, ratios and pixels
Pick the shape before you generate. Pixels are at 300 DPI:
- US Letter page, 8.5×11 in: 3:4, trim a little off the bottom; 2550×3300 px.
- A4 page, 210×297 mm: 3:4, trim the sides; 2480×3508 px.
- Header band, about 8.5×2 in (Letter) or 210×50 mm (A4): 4:1 on Nano Banana 2.1, or 3:1 on GPT Image 2.5 Sunburst; about 2550×600 px.
- Footer strip, about 8.5×1 in: 8:1 on Nano Banana 2.1; about 2550×300 px.
- Bleed for print: 0.125 in (3 mm) on each side where colour runs off the edge; logos and text a quarter inch inside the trim.
- Office printers can't print to the edge, so for letters you print yourself, keep colour bands off the outer quarter inch too.

### 16 letterhead prompt ideas
Attach your logo, then use one of these with your company name in quotes:
- Slim navy band across the top, this logo on the left unchanged, “Northfield Studio” in a clean serif to its right, white below.
- Law firm: cream paper look, centred monogram “H&W”, “Hale & Ward LLP” in classic small capitals, a thin gold rule beneath.
- Architecture studio: a single black hairline across the top, the logo small on the far right, lots of white space.
- Medical clinic: soft teal wave across the top-left corner, logo on the right, “Riverside Family Clinic” in friendly sans-serif.
- Creative agency: bold coral and violet geometric shapes in the top-right corner only, the rest of the page white.
- Accountancy: dark green bar on the left edge running the full height, logo at the top of the bar.
- Bakery: hand-drawn wheat sprigs in the top corners, “Golden Crumb Bakery” in warm script, cream tone.
- Tech startup: gradient line from blue to purple across the very top, the logo left, minimal sans-serif.
- Real estate: skyline line drawing across the bottom as a footer strip, logo top-left.
- Photographer: a thin camera-aperture monogram centred at the top, “Ana Ruiz Photography” in spaced capitals.
- Charity: soft watercolour leaves in the top-left corner, logo right, “Greenway Trust” in a calm serif.
- Construction firm: bold yellow and charcoal diagonal stripe in the top-right corner, logo left.
- Consultant: monogram “JK” in a circle, centred, with a fine double rule under it.
- Restaurant: an olive branch line drawing across the top, “Trattoria Lume” centred in elegant serif.
- Footer strip only: a thin rule and a small repeated pattern in brand blue along the bottom edge, no text.
- Full A4 page: navy header band with logo, a matching thin footer band, the whole middle left completely white.

### From image to a letterhead you type on
A letterhead only works if you can write letters on it. The cleanest way:
- Word: Insert > Header > Edit Header, then Insert > Pictures and choose the PNG; drag it to the full width, and type the contact block in the header beneath it.
- Google Docs: Insert > Headers & footers > Header, then Insert > Image > Upload from computer.
- Footer strip: do the same in the footer. Tick “Different First Page” if only page one should carry the full letterhead.
- Full-page design instead of a band: insert it in the header, set Wrap Text to Behind Text and stretch it to the page edges.
- Save it as a template (Word .dotx, or a Google Docs copy) so every new letter starts with it.
- Kenerate Agent in chat can write an editable A4 Word or PDF document with your letterhead image at the top — handy for a one-off letter, but the image is on page one only, under the document's title line.

### What an AI letterhead can't do
It isn't a vector file, so it won't scale endlessly like a logo from a designer — render big or upscale. It isn't a Word template on its own; the steps above turn it into one. And image models still slip on long strings of small text, which is why the phone number, email and address belong in Word, not in the picture.

## FAQ
Q: How do I make a letterhead with AI?
A: Open Kenerate's Image Studio, pick GPT Image 2.5 Sunburst and a 3:1 ratio, attach your logo, and describe the header: “a slim navy band across the top, this logo on the left unchanged, ‘Northfield Studio’ in a clean serif beside it, lots of white space”. Download the PNG, put it in the header in Word or Google Docs, and type your contact details below it.

Q: Does the AI letterhead generator give me a Word (DOCX) file?
A: Not directly. Image models make a picture — PNG, JPG or WebP — not an editable Word file. To use it as a letterhead, open your document's header and insert the picture; the letter itself stays typeable. Kenerate Agent can also write an editable A4 Word document in chat with your letterhead image placed at the top, but that picture sits in the body of page one rather than in a header that repeats on every page.

Q: What size is a letterhead?
A: US Letter is 8.5×11 inches and A4 is 210×297 mm. At 300 DPI that's 2550×3300 pixels for Letter and 2480×3508 for A4. Print shops ask for 0.125 in (3 mm) of bleed on each side if colour runs to the edge — 8.75×11.25 in for Letter, per 4OVER4 — and want text kept inside the safe area.

Q: What margins should a letterhead have?
A: Word starts every page with one-inch margins, which suits a letter body. Keep the logo and any text in the header at least a quarter inch from the page edge, and keep the header to about the top two inches so the letter starts high enough. If the design has a footer strip, leave the bottom inch for it.

Q: Should the address and phone number be part of the image?
A: Better not. Image models can swap a digit in a phone number or a letter in an email, and you can't fix a typo in a picture as easily as in text. Put the company name and the design in the image, and type the address, phone, email and website in the header as real text — they stay correct, searchable and easy to update.

Q: Can it use my existing logo?
A: Yes — attach it as a reference and say “place this logo on the left, unchanged”. Models can redraw a logo slightly, so compare it with the original; for a pixel-perfect mark, generate the band without the logo and insert your original logo file into the Word header next to it. Remove BG in Edit Studio gives a logo a transparent background first.

Q: Can I make a letterhead without a logo?
A: Yes. Ask Recraft V4.1 or GPT Image 2.5 Sunburst for a type-led header — the company name in a strong serif or sans-serif with a simple rule or monogram — or make a logo first with the AI logo generator and attach it.

Q: Will it print sharply?
A: Render at 4K, or upscale with Kenerate's Image Upscaler (up to 8K) before printing. A header the width of a Letter page needs about 2550 pixels across at 300 DPI. The output is a raster image, not a vector file, so very fine lines can soften at large sizes; keep rules at least half a point thick.

Q: Is the AI letterhead generator free?
A: Free to start. A new Kenerate account gets 25 credits on sign-up — three GPT Image 2.5 Sunburst designs at 1K — and Qwen Image 3.0 is a free-plan model. After that, credits come in one-time packs that never expire, with no subscription. Downloads carry no watermark.

## Related pages
- AI certificate generator: https://kenerateai.com/ai-certificate-generator
- AI business card generator: https://kenerateai.com/ai-business-card-generator
- AI logo generator: https://kenerateai.com/ai-logo-generator
- Remove background from logo: https://kenerateai.com/remove-background-from-logo
- AI document generator: https://kenerateai.com/ai-document-generator
- AI PDF generator: https://kenerateai.com/ai-pdf-generator
- AI mockup generator: https://kenerateai.com/ai-mockup-generator
- Upscale image to 4K: https://kenerateai.com/upscale-image-to-4k

## Sources
- 4OVER4 — What's the standard size for custom letterhead?: https://www.4over4.com/faqs/general/what-s-the-standard-size-for-custom-letterhead
- MOO — Letterhead design guidelines: https://www.moo.com/us/letterhead/design-guidelines
- Microsoft Support — Insert a header or footer in Word: https://support.microsoft.com/en-us/office/insert-a-header-or-footer-b87ee4df-abc1-41f8-995b-b39f6d99c7ed
- Microsoft Support — Change the margins in your Word document: https://support.microsoft.com/en-us/office/change-the-margins-in-your-word-document-c95c1ea1-70b1-4dde-a1da-f5aa2042c829