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Letterhead format guide: size, margins, layout, and print-ready setup
Short answer
A proper letterhead format usually starts with US Letter size, 8.5 x 11 inches, or A4 size, 210 x 297 mm, when the printer or recipient expects an international format. Keep the logo, company name, address, phone, email, and website readable in the header or footer, leave enough open writing space for the letter body, and keep important content inside safe margins. At 300 DPI, an 8.5 x 11 inch letterhead is 2550 x 3300 px; with 0.125 inch bleed on every edge, the full-bleed file is 8.75 x 11.25 inches, or 2625 x 3375 px. Printer specifications still control the accepted size, bleed, crop marks, color workflow, PDF/X level, and delivery format.
Use this page when a business letterhead needs the right format, size, margins, brand placement, and print-ready PDF setup before it becomes stationery.
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What this page covers
- US Letter 8.5 x 11 inch letterhead size
- A4 210 x 297 mm reference for international letterhead
- Header or footer space for logo, business name, and contact details
- Open writing area for the letter body
- Safe margins for brand and correspondence text
- 2550 x 3300 px trimmed size at 300 DPI for raster artwork
- 8.75 x 11.25 inch full-bleed file with 0.125 inch bleed when artwork reaches the edge
- Printer-requested crop marks, PDF/X level, color workflow, and delivery format
How to use this guidance
- 1Choose US Letter or A4 before designing the letterhead
- 2Place the logo, business name, and contact details in a consistent header or footer
- 3Leave enough blank space for the actual letter content
- 4Keep important brand and contact text inside the safe margins
- 5Add bleed only when artwork or color reaches the edge of the sheet
- 6Keep final letterhead text as vector type or embedded fonts in the PDF
- 7Export with the printer's requested color workflow, crop marks, and PDF/X standard
- 8Run preflight and compare the proof against the printer's requirements
Proper letterhead format
A practical business letterhead format includes the company logo, company name, mailing address, phone number, email address, website, and any required legal or departmental details. Most designs place these in a header, footer, or restrained side treatment so the actual letter body still has enough open writing space.
Standard letterhead size and dimensions
In the United States, standard letterhead usually uses US Letter size: 8.5 x 11 inches, or about 216 x 279 mm. International letterhead often uses A4: 210 x 297 mm, or about 8.27 x 11.69 inches. Match the format to the printer, recipient, and business document workflow.
Letterhead margins, bleed, and safe area
Letterhead needs enough margin for both brand elements and the letter body. Trim Proof's current letterhead profile uses 0.125 inch bleed and a 0.25 inch safe margin around an 8.5 x 11 inch trim. If the design has no edge-to-edge color or artwork, the printer may not need bleed, but important text should still stay inside the safe area.
Letterhead pixels at 300 DPI
For raster artwork, multiply inches by 300. An 8.5 x 11 inch letterhead is 2550 x 3300 px after trim. If 0.125 inch bleed is added to every side, the full-bleed document becomes 8.75 x 11.25 inches, or 2625 x 3375 px. Final letterhead text should stay as vector type or embedded fonts instead of being flattened into a raster image.
Where Trim Proof fits
Trim Proof creates a fresh letterhead proof from a structured brief, keeps brand and contact text in the deterministic PDF layer, applies explicit page geometry, and checks the PDF/X export before production download. It does not replace Microsoft Word templates, repair every existing document, or guarantee acceptance by every printer.
Related print-ready tools
Letterhead Maker for Print-Ready PDF/XMake business letterhead from a brief with vector text, margins, optional bleed, crop marks, preflight, watermarked demo art, and paid clean PDF/X export.Free Letterhead Maker DemoTry a free letterhead maker demo with watermarked art, margins, vector business details, optional bleed, preflight, and paid clean PDF/X export.Letterhead Template for Print-Ready PDFsCreate a letterhead template for print-ready PDFs with US Letter size, margins, optional bleed, vector text, PDF/X export, and preflight checks.
Common questions
What is the proper format for a letterhead?
A proper letterhead format uses a standard page size, clear logo placement, company name, address, phone, email, website, safe margins, and enough open space for the letter body. For print, the final PDF should also match the printer's bleed, color, font, and delivery requirements.
What is the standard letterhead size?
In the United States, standard letterhead size is usually 8.5 x 11 inches. International letterhead often uses A4, which is 210 x 297 mm, or about 8.27 x 11.69 inches.
Can I make my own letterhead?
Yes. You can design your own letterhead in many tools, but the print file should still be checked for size, margins, embedded fonts, color workflow, PDF settings, and any printer-requested bleed or crop marks.
Can I make my own letterhead in Word?
Yes, Microsoft Word can be used for editable office letterhead. Trim Proof focuses on generated print-ready PDF/X proof output, so Word templates remain a separate document workflow.
What does a good letterhead look like?
A good letterhead looks clear, restrained, and readable. It should carry the brand, show essential contact details, leave comfortable writing space, and keep important content away from trim edges.
Can Trim Proof guarantee a printer will accept my letterhead?
No. Trim Proof can create and check a letterhead proof, but each printer can set its own trim, bleed, crop-mark, color, PDF/X, paper, and delivery requirements.