Poster Specifications

Standard Poster Sizes

US and international poster sizes with exact pixel dimensions.

MA By Mac · 3 min read · May 2, 2026 · Updated May 2, 2026

Poster sizing is a minefield. Do you design for US standard (11×17, 16×20, 24×36) or international (A4, A3, A2)? Do you design once and resize, or create unique posters for each size? This guide covers the 6 most common poster sizes, their pixel dimensions at 300 DPI, and the best strategy for Etsy sellers who want to offer multiple sizes without creating 10 versions.

Rule of thumb: Design for 24×36 (the largest standard size), then downsize for smaller formats. This prevents upscaling and quality loss. Downscaling always preserves detail; upscaling introduces blur.

6 Standard Poster Sizes at 300 DPI

Size	Pixels @ 300 DPI	Aspect Ratio	Use Case
11×17 (Tabloid)	3300×5100	11:17 (portrait)	Small wall art, office décor, flyers
16×20 (Standard)	4800×6000	4:5 (portrait)	Premium wall art, galleries, statement prints
18×24 (Standard+)	5400×7200	3:4 (portrait)	Large wall art, dorm rooms, commercial spaces
24×36 (Standard Large)	7200×10800	2:3 (portrait)	Largest standard US size, statement walls, galleries
A3 (International)	3508×4961	A-ratio (portrait)	European standard, office, retail
A2 (International Large)	4961×7016	A-ratio (portrait)	Large European standard, galleries, events

Related guides: Etsy mockup generator, wall art converter, pricing.

Why this matters

Offering multiple poster sizes on Etsy increases your sales by 2–3× — some customers want 16×20 for bedrooms, others want 24×36 for office walls. But creating unique designs for 6 sizes is wasteful. The smart strategy: design for 24×36 (the largest size), then downscale for 18×24, 16×20, 11×17. This takes 2 minutes per size (Photoshop Image → Scale Image) and avoids upscaling blur. Downsizing preserves detail; upscaling introduces artifacts.

When to offer each size

US Sizes (most Etsy buyers):

11×17: Office, dorm, small bedrooms. Entry-level poster buyers.
16×20: Premium buyers, galleries, bold statement walls. Most popular after 24×36.
18×24: Large bedrooms, commercial spaces. Less common than 16×20 or 24×36.
24×36: Statement walls, galleries, corporate. The "wow" size—highest price point.

International Sizes (niche on Etsy, big on European platforms):

A3: European standard, widely framed and stocked.
A2: Large European size, galleries, events.

Common poster size mistakes

These sizing decisions kill poster sales:

1. Offering too many sizes (decision paralysis)

If you list 8×10, 11×17, 16×20, 18×24, 24×36, AND A3, AND A2, customers freeze. Offer 3–4 sizes: 11×17 (entry), 16×20 (popular), 24×36 (statement). A3 if selling internationally.

2. Upscaling small designs to 24×36

If your design is 2400×3600px (small), upscaling to 7200×10800px (24×36) introduces blur. Design for 24×36 first, then downscale. Never upscale posters.

3. Using non-standard sizes (oddball dimensions)

Custom sizes like 15×22 confuse customers (not framed anywhere) and hurt Etsy's categorization. Stick to standard sizes that customers recognize and can frame.

4. Mixing US and international sizes in listings

Don't list "11×17, 16×20, A2, A3" in one listing. Separate them: US tab offers 11×17/16×20/24×36; International tab offers A3/A2. Customers get lost otherwise.

5. Not testing how designs look at each size

A detail that looks great at 24×36 may be unreadable at 11×17. Print tests at all sizes before offering. Avoid thin lines, small text, fine details.

Frequently asked questions

For Etsy, 16×20 and 24×36 are the most useful poster sizes to offer. 16×20 is usually the safest middle ground because it feels premium, fits common frames, and appeals to buyers who want something easy to decorate with. 24×36 is the larger, more statement-making option that can support higher prices, though fewer shoppers will choose it. If you want broad appeal, list both so buyers can choose a practical everyday size or a bigger focal piece for a living room or studio wall.

A sizes like A3 and A2 can be a good add-on if you want to reach international buyers, especially in Europe where those formats are more familiar. On Etsy, though, they are less common than US poster sizes, so they are usually optional rather than essential. If your shop serves a global audience, offering them can make your listings feel more inclusive. If you mostly sell to US customers, focus on 11×17, 16×20, and 24×36 so your size options match what shoppers already expect and frame easily.

Yes, downscaling a 24×36 design to 11×17 is usually the smartest approach because you are starting from a larger file and keeping the artwork detail intact. A design built for 24×36 can be reduced cleanly for smaller prints without losing quality, as long as the original artwork was created at print-ready resolution. For example, a detailed typography poster or illustrated quote print can work well this way. What to do: create the master file at the largest ratio you plan to sell, then resize it carefully for smaller versions.

At 300 DPI, an 11×17 poster should be 3300×5100 pixels. That comes from multiplying each side by 300, which is the standard print-resolution reference many designers use for sharp poster files. This gives you enough detail for a clean print at that size, especially for text-based art, simple graphics, or illustrations with clear edges. What to do: set your canvas to the final print size first, then build or upscale your artwork to match so you are not guessing later when preparing Etsy-ready files.

No, 24×36 is not too large for bedroom walls, and it is actually a very popular choice when sellers want a bold, high-impact look. It works especially well above a bed, on a feature wall, or in a home office where the buyer wants the poster to feel like a focal point. Some shoppers do worry about size, so it helps to position 16×20 as the safer alternative for smaller rooms or more restrained decor. What to do: show both sizes in your listing so customers can choose the scale that suits their space.

You can crop a 24×36 poster down to 16×20 only when the design was planned for that ratio or can lose some edge area without harming the composition. If the artwork depends on wide margins, centered text, or carefully placed subjects, cropping may cut off important parts and change the visual balance. For example, a landscape scene might adapt better than a tightly framed quote poster. What to do: design with the exact ratio in mind whenever possible, and make separate versions for each size instead of relying on cropping alone.

12×18 is not a standard poster size in the way 11×17, 16×20, 18×24, and 24×36 are, so it is usually better to stick with those common formats. Standard sizes are easier for customers to frame, compare, and understand, which reduces confusion in a POD listing. For example, a buyer may immediately know what to do with an 18×24 print because it fits familiar frame choices, while a nonstandard size can create extra friction. What to do: prioritize the sizes most shoppers already recognize and reserve unusual formats only if you have a clear reason to offer them.

A good way to check print quality is to review the design at the final size or print a smaller version and inspect it from normal viewing distance. If the text stays readable, edges look clean, and fine details remain crisp at a smaller size, that is a strong sign the larger poster will hold up well too. This is especially useful for Etsy sellers preparing ready-to-print files, because you want the artwork to look sharp in both preview and production. What to do: zoom in to judge detail, then test the file at a smaller size before listing it.