1. Start with the correct window size and orientation
Before you open the artwork, confirm the exact glass or vehicle window size. Measure the visible area, then note the full panel size, any curves, rubber seals, heating lines and areas that must stay clear. For shopfront glass, check if the film will cover a single pane, a line of panes, or only the lower section. For vehicles, confirm whether the graphic is going on rear side windows, rear doors, tailgate glass or a full back window.
If the job is for a vehicle, remember that the driver must still have a legal view where required. Check current road traffic rules before final approval, especially for rear and side windows. A file that looks fine on screen can fail once it is placed on glass if the orientation is wrong or the safe area is too small.
2. Set up the artwork for perforated film
Designs for perforated one-way vision film need to be built with the material in mind. The film has tiny holes that let light through from one side while showing printed graphics on the other. Standard perforation ratios vary, with common options around 50/50, 60/40 or 70/30 depending on how much image area and through-vision is needed. The stronger the print coverage, the less see-through the film usually offers.
Build artwork at full size if possible, or at a clear scale that is noted in the file name and drawing. Keep important faces, text and logos away from the perforation edge and trim line. Fine details may disappear on small type, so use bold lettering and simple shapes where practical.
- Use vector logos where possible
- Keep text large enough to read at a distance
- Avoid thin strokes and tiny outlines
- Place key branding away from edges, seals and curves
3. Check image quality, colour and transparency
For photo-based graphics, supply high-resolution images. Low-resolution images may look acceptable on a screen but can print soft or blocky on large windows. As a rule, images should be supplied at print quality for the final size, not lifted from social media or compressed messaging apps.
Colour can shift between screen and print, especially on perforated film, so a colour proof is useful before production starts. Dark backgrounds usually give better outside visibility for branding, while lighter areas can help with a more open look from inside. If the design uses transparency, be clear about which parts must print solid and which areas may stay open. A small proof can save time on site later.
- Supply files in CMYK where possible
- Flatten effects and transparencies before exporting
- Do not embed hidden layers or unwanted marks
- Check that blacks, greys and brand colours are correct
4. Leave room for bleed, trims and fixing points
Artwork should extend beyond the final trim size so the graphic can be cut cleanly after printing and lamination. Bleed is important on glass, especially where the panel ends close to a rubber edge or frame. A safe margin inside the trim helps prevent text from being lost when the film is wrapped, trimmed or fitted around small irregularities.
For vehicles, allow extra space around handles, spoilers, window heaters and fixed rubbers. Also avoid placing critical wording over areas where the film may need to be trimmed on site. If you are unsure, send a marked layout showing the glass shape, the printable area and any no-go zones. That usually avoids rework and keeps the install smooth.
5. Match the file to the installation method
Good artwork setup depends on where the film is going and how it will be installed. Glass installation usually needs a clean, precise edge that fits the pane. Vehicle installation can require templating, because each model has its own curves, depth and glass shape. A panel intended for a rear window may need a different layout from a side window or door glass.
When sending artwork, state whether the panel is for a shopfront, a fleet vehicle, a single car or a full campaign rollout. That helps with print scaling, panel splits and alignment. If the film will be laminated after printing, make sure the artwork allows for the added finish and any slight shift during production.
- Confirm the application surface: glass, vehicle window or both
- State if the panel is inside or outside facing
- Note if the job needs one-piece artwork or split panels
- Tell us if old film must be removed first
6. Final file check before you send it through
Before submission, open the file at actual size and check spelling, phone numbers, spacing, alignment and image sharpness. A good file should be easy to read without zooming in and should not rely on tiny details to carry the message. Make sure linked images are embedded or supplied, fonts are outlined or included, and the final version is clearly named.
Useful file types are usually PDF, AI, EPS or high quality TIFF, depending on the artwork. Include a note if the design has multiple pages, repeated windows or different sides for a fleet. If you are not sure whether the file is ready, ask for a quick check before printing. It is better to catch a problem at artwork stage than after the film has been printed and laminated.
- Check spelling and contact details carefully
- Supply the final approved version only
- Label files by site, vehicle or window position
- Keep a backup of the artwork for future refits or refreshes
