Industry Insight: Understanding Design File Formats (Part 1 of 2)
This guide explains the most common design file formats - PSD, TIFF, JPG, PNG, AI, and PDF, and their role in wallpaper and fabric production. Learn why layered files are best, what to avoid, and how choosing the right format makes your designs print-ready.
- Lauren Peploe
Understanding Design File Formats
When it comes to wallpaper and fabric printing, the type of file you supply can make the difference between a smooth, professional workflow and costly setbacks. Different design file formats serve different purposes, and knowing which to use (and why) ensures your artwork is truly production-ready.
This is the first instalment of a two-part series on the technical foundations of decorative print. In Part 1, we focus on the file formats. In Part 2, we’ll explore colour in decorative print and why colour management is so important.
Why file formats matter in design
Understanding file formats is crucial for creating the perfect print-ready design file. The wrong file can cause delays. add costs, or even compromise the quality of the final product. The right format means:
- Your artwork is print-ready.
- Colours and details are accurately preserved.
- The process from design to product runs smoothly.
Raster vs vector, what's the difference?
Before diving into file types, it helps to understand the two main kinds of digital artwork: raster and vector.
Raster files (like PSDs TIFFs, or JPGs) are made up of individual pixels, which makes them perfect for detailed, painterly designs. These pixels have a defined amount, determined by the resolution, which make up the image. Each pixel is assigned a colour, these are built up to create the final image.
Vector files (like AI, or EPS), are made up of a series of geometrical shapes expressed as a mathematical paths. There is no define quality of pixels in a vector file which means they are flexible to scale infinitely without loss of quality.
Common design file formats explained
PSD (Photoshop document)
A native file format for Adobe Photoshop, cross-compatible with other Adobe software. PSDs can be saved in layers and with transparency, allowing you to rework the artwork repeatedly without compromising on quality. Photoshop can export PSDs into a variety of other formats (like TIFFs, JPGs, or PNGs), making it a flexible starting point for more wallpaper and fabric projects.
TIFF (Tagged Image File Format)
A high-quality raster format widely accepted in print. TIFFs can support layers, and high bit-depths for colour accuracy. They preserve image detail without compression, making them ideal for final print-ready artwork. TIFFs are considered an industry standard for professional printing, offering both quality and stability.
JPEG (Joint Photographic Experts Group)
A compressed raster format that flattens artwork into a single layer. Great for previews, sharing proofs, or quick references because of its small file size. Not suitable for print production, as repeated saving reduces quality, creates blurring, and the flattened image loses colour control with no layers to edit.
PNG (Portable Network Graphic)
A raster format designed for digital use, often used online. Supports transparency, making it popular for logos or graphics with clear backgrounds. Not recommended for wallpaper or fabric printing as the file sizes are limited, there is limited colour depth, and PNGs work better at lower resolutions than required for printing.
PDF (Portable Document Format)
A versatile format that can contain both raster and vector artwork. Easy to share across devices while preserving fonts, images, and layout. PDFs should be exported at high resolution for print as flattened/low-res PDFs can cause production issues.
AI (Adobe Illustrator) & EPS (Encapsulated PostScript)
Vector-based formats created in Adobe Illustrator (AI) or other vector software (EPS). Vectors can scale indefinitely without losing sharpness, making them perfect for logos, line work, or simple motifs. While less common for wallpaper and fabric design, AI files can be used for graphic style design or when working with branded elements.
INDD (InDesign Document)
A native file format for Adobe InDesign, primarily used for page layout and multi-page documents such as magazines, brochures, and books. Excellent for combining text and images into structured layouts, with precise control over typography and grids. Not typically used for wallpaper and fabric design, but great for marketing materials, labels, and pattern books.
Understanding design terminology
When discussing design file formats, a few technical terms come up repeatedly. Knowing what they mean can help you understand why some files are better suited to wallpaper and fabric production.
A pixel is the smallest building block of a digital image. Raster files, such as PSDs and TIFFs, are made up of thousands (or millions) of pixels, and the quality of an image depends on how many pixels are packed into a given space. This is where DPI (dots per inch) or PPI (pixels per inch) comes in. Both measure resolution, or how sharp and detailed an image will appear when printed.
An image with a low DPI or PPI may look fine on screen, but once enlarged for wallpaper it will appear blurred or blocky. High-resolution files, set to 300dpi or higher, contain enough information to reproduce sharp, detailed designs at scale. This is why professional design file formats like PSDs and TIFFs are essential: they preserve the resolution needed to turn creative ideas into print-ready wallpaper and fabric.
Understanding Design File Formats
Choosing the right design file format may seem like a small detail, but it’s essential for professional wallpaper and fabric production. Get in touch if you’re unsure which file type to send, I can make sure your artwork is print-ready.
Next up: Understanding Colour in Decorative Print (Part 2 of 2)
FAQs
Yes, but it’s only useful as a reference. For production, either industry standard, layered PSD or TIFF files are best.
That’s where separation comes in. Flattened artwork can be separated, find out more about what design separation is here.
No, I can work with all major file types including TIFFs, PDFs, and Illustrator files. But Photoshop and CAD/CAM are best for wallpaper and fabric projects.
Everything I share reflects how I approach wallpaper design, balancing creativity with technical decisions moving a design into production. I’ve brought that process, from first idea to seamless, production-ready repeat, together in my digital workbook, How to Create a Wallpaper Design.
Grounded in real studio experience, it’s designed to help you approach your own wallpaper designs with clarity, confidence and technical assurance.
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