How to Design Artwork for Custom Magnet Printing — A Complete Guide
By Aquaholic Team
When it comes to custom magnet printing, the quality of your final product starts long before production begins—it starts with your artwork. Whether you’re designing promotional magnets for your business, commemorative fridge magnets for an event, or novelty items for resale, submitting properly prepared artwork is crucial. Getting your design specifications right means sharper prints, accurate colours, faster turnaround times, and ultimately, lower costs. In this comprehensive guide, we’ll walk you through everything you need to know about preparing artwork for custom magnet printing, from file formats and resolution requirements to design tips specific to each magnet type. By the end, you’ll feel confident submitting artwork that meets professional print standards.
File Formats We Accept
Not all file formats are created equal for print production. The format you choose impacts print quality, colour accuracy, and file compatibility with our production systems. Here’s a breakdown of the formats we accept and which ones deliver the best results:
| File Format | Best For | Pros | Cons |
|---|---|---|---|
| AI (Adobe Illustrator) | Logos, vector graphics | Scalable, perfect detail, layer support | Requires Illustrator to edit |
| Mixed graphics and text | Universal compatibility, maintains formatting | Can be harder to edit after creation | |
| PNG | Graphics with transparency | Transparent backgrounds, lossless compression | Not scalable, needs minimum 300 DPI |
| JPG | Photographs, complex imagery | Small file size, widely supported | Lossy compression, no transparency |
PRO TIP: Vector file formats (AI, PDF with vector objects) are always preferred for magnet artwork because they’re resolution-independent. This means they scale infinitely without quality loss, making them ideal for die-cut magnets of any size. If you only have raster files (PNG, JPG), ensure they’re at least 300 DPI at final print size.
Our recommendation: If you’re designing a logo or graphic magnet, use AI or PDF. If you’re creating something with photographs or photorealistic elements, high-resolution PNG or JPG works well. Always convert your file to CMYK colour mode before submission (we’ll cover this in the next section).
Resolution and Colour Requirements
Two of the most common issues we see in submitted artwork are resolution problems and incorrect colour modes. Both are easily preventable and crucial for print quality.
Resolution: The 300 DPI Standard
Resolution is measured in dots per inch (DPI). For all print products, including custom magnets, we require a minimum of 300 DPI at final print size. This ensures that when your magnet is printed, the image will be sharp, clear, and free from pixelation or blurriness.
IMPORTANT: 72 DPI (web resolution) or 96 DPI (screen resolution) will result in fuzzy, low-quality prints. Always check your file properties and ensure minimum 300 DPI. If you’re unsure how to check DPI, you can verify in your design software’s file properties or export settings.
Colour Mode: Why CMYK, Not RGB
This is critical: all artwork must be submitted in CMYK colour mode, not RGB. Here’s why:
- RGB (Red, Green, Blue) is an additive colour model used by screens and digital displays. It creates light-based colours that don’t translate directly to physical inks.
- CMYK (Cyan, Magenta, Yellow, Black) is a subtractive colour model used in printing. It uses ink dots that combine to create colours visible on paper or magnet surfaces.
- If you submit RGB artwork, we’ll convert it to CMYK, which may result in colour shifts—greens might become duller, bright reds might shift orange, and overall vibrancy can be lost.
QUICK FIX: Most design software (Photoshop, Illustrator, Canva Pro) lets you convert to CMYK via Image → Mode → CMYK (Photoshop) or Document → Colour Mode → CMYK (Illustrator). Do this before exporting your final artwork.
Bleed Area and Safe Zone Explained
One of the most misunderstood aspects of print design is the bleed area. Understanding this concept is essential for magnets, especially die-cut designs where the magnet’s edges are irregular.
What Is a Bleed Area?
The bleed area is the extra space beyond your final magnet size that extends into the design. During production, designs are printed on large sheets, then cut to size. Because cutting machines have a small margin of error, we need a bleed to ensure that no white gaps appear at the edges if the cut isn’t perfectly precise.
Recommended Bleed Size
For custom magnet printing, we recommend:
| Magnet Type | Bleed Size | Safe Zone |
|---|---|---|
| Die-cut Magnets | 2-3mm on all sides | 5mm from edge |
| Rectangular Magnets | 2-3mm on all sides | 5mm from edge |
SAFE ZONE: Always keep important elements (text, logos, faces) at least 5mm away from the magnet edge. This ensures nothing gets accidentally cut off, even with a 3mm bleed allowance.
Design Tips for Different Magnet Types
Different magnet types have different design requirements and production constraints. Here’s how to optimize your artwork for each:
Soft PVC Magnets
Soft PVC magnets feature a raised 3D texture created by a custom mould. Because the design is moulded into the material itself, design considerations differ from flat-print magnets.
- Design with bold lines and distinct shapes—fine details may not transfer well to the mould.
- Limit colour count: Soft PVC magnets use mould-based printing, so fewer colours work best (typically 2-4 colours).
- Avoid gradients: Gradual colour transitions don’t translate well to moulded designs. Use solid colour blocks instead.
- Submit your artwork as colour-blocked vector art so our production team can assign Pantone colours to each section.
Example: A dragon-shaped soft PVC magnet works perfectly with solid red, gold, and black sections. A photorealistic dragon would lose detail.
Metal Magnets
Metal magnets feature hard enamel printing, which creates a high-end, jewel-like finish. The production process involves hand-pouring coloured enamel into recessed areas of the design.
- Submit Pantone colour specs: For enamel magnets, specify exact Pantone colours for each design element so colours match your brand perfectly.
- Design for enamel filling: Each colour area should be large enough to be filled with enamel (avoid tiny slivers or intricate details).
- Use colour blocking: Like soft PVC, metal magnets work best with distinct colour blocks rather than gradients.
- Provide artwork as colour-separated layers if possible, so production can prepare each colour layer individually.
Resin Magnets
Resin magnets feature hand-painted details under a clear resin dome, creating a 3D, jewel-like appearance. These magnets allow for more detailed, photorealistic artwork since the painting happens after resin casting.
- Provide reference images: Submit high-quality reference photos or artwork that our painters can work from. The more detail you provide, the better the final result.
- Include paint colour guides: If you have specific colour requirements (e.g., skin tones, fabric colours), provide Pantone references or colour swatches.
- Embrace detail: Unlike moulded magnets, resin magnets can include fine details, textures, and realistic shading.
- Specify any 3D sculpting preferences (e.g., raised nose, recessed eyes) if applicable.
Letterpress Magnets
Letterpress creates embossed and debossed designs with a classic, premium feel. The design is pressed into the magnet material, creating depth and tactile appeal.
- Design with bold lines: Fine details disappear in letterpress. Use thick strokes, bold fonts, and simple geometric shapes.
- Avoid thin serifs: Thin letterforms can break during the pressing process. Sans-serif fonts or thick serif fonts work better.
- Limited detail: Letterpress works best for text, logos, and simple illustrations. Complex scenes won’t translate well.
- Submit artwork as clean vector art with consistent line weights.
Acrylic & Car Magnets
These magnets use full-bleed digital printing, which means they can accommodate complex, photorealistic designs with unlimited colours. This is the most forgiving magnet type for artwork.
- High-resolution photos work great: Since these use digital printing, you can submit detailed photographs and artwork with gradients and complex colour transitions.
- Full bleed is encouraged: Design extends to all edges—no need to worry as much about safe zones (but still maintain 2-3mm bleed).
- Unlimited colours: No colour restrictions. Submit artwork in CMYK at 300 DPI and we’ll handle the rest.
- These magnets work perfectly for custom photos, landscape artwork, and complex brand designs.
Common Artwork Mistakes to Avoid
We’ve reviewed thousands of magnet designs. Here are the five most common mistakes that lead to production delays or quality issues:
1. Submitting Low-Resolution Files
Files under 300 DPI result in pixelated, blurry prints. Always export at final size at 300 DPI minimum. If you’re unsure, err on the side of higher resolution—we can always downsize, but we can’t add detail that isn’t there.
2. Forgetting to Convert to CMYK
RGB artwork submitted to a print shop will either be rejected or converted by us—which may shift colours. Do the conversion yourself in your design software to ensure accurate colour matching.
3. Missing Bleed Area
Files without proper bleed can result in thin white lines at the magnet edges after cutting. Add 2-3mm bleed on all sides of your final design and mark the safe zone clearly.
4. Too Much Fine Detail
Thin lines, small text, and intricate illustrations may not print clearly, especially on moulded or letterpress magnets. Test your design at actual size and ensure all elements are legible and visible.
5. Wrong File Format for the Job
Submitting a JPG of a logo (raster) instead of vector art makes it impossible to scale without quality loss. When in doubt about which format to use, ask us—we’re happy to guide you.
Don’t Have a Design? We Can Help
Not everyone is a graphic designer, and that’s okay. At Aquaholic, we offer free design assistance to help bring your magnet vision to life. Whether you need us to refine a rough sketch, adapt your existing logo for magnet production, or create something from scratch, our design team is here to help.
Simply describe your idea, share any reference images or brand guidelines, and we’ll create a design mockup for your approval. Most designs can be ready within 2-3 business days, so there’s no delay to your project timeline.
Frequently Asked Questions About Magnet Artwork
Can I submit artwork in PSD format?
While we can work with PSD files, we strongly recommend converting to a more universal format like PDF, AI, or PNG before submission. PSD files can have compatibility issues across different software versions, and they’re larger files. Convert to CMYK, flatten layers if not needed, and export as PDF or AI for best results.
What happens if I don’t include a bleed area?
If there’s no bleed, there’s risk of white or coloured edges showing after die-cutting due to minor cutting variances. We’ll often add a bleed ourselves if we notice it’s missing, but this can slightly alter your design composition. It’s always better to include it from the start to maintain design integrity.
Do I need to provide separate files for front and back printing?
If your magnets are printed on both sides, yes—submit separate artwork files for the front and back. Label them clearly (e.g., “Front.pdf” and “Back.pdf”) and ensure both files are the same size and properly registered so the front and back align perfectly after production.
Can I use Canva to design my magnet artwork?
Absolutely! Canva is a great tool for beginners. Just make sure you use Canva Pro (which offers CMYK export), set your canvas to the correct magnet dimensions, export at 300 DPI minimum in PNG or PDF format, and convert to CMYK if needed. Canva’s templates can be a great starting point too.
How much will adding more details or colours cost?
This depends on the magnet type. For digital-printed magnets (acrylic, car magnets), unlimited colours are included in the base price. For moulded, metal, or resin magnets, colour and complexity do affect pricing. Visit our custom magnet pricing guide for detailed cost information.
Can you recreate my design from a photo or sketch?
Yes! Our design team can vectorise sketches, recreate designs from photos, or adapt existing designs for magnet production. Send us your photo or sketch along with any brand guidelines, and we’ll create a vector-ready file. There may be a design fee depending on the complexity, but we offer free consultations to discuss your project.
Ready to Order Your Custom Magnets?
Now that you know how to prepare perfect artwork, it’s time to bring your design to life. Explore all our custom magnet printing services and see which magnet type is right for your project.
Related Reading
Custom Magnet Cost Guide
Understand what factors into magnet pricing and how to get the best value for your project.
Soft PVC vs Metal vs Resin Magnet Comparison
Confused about which magnet material to choose? Compare the pros, cons, and best uses of each.
View Our Magnet Gallery
See real examples of custom magnets we’ve created. Get inspired for your next project.
Have questions about your artwork? We’re here to help.
Contact our design team for a free consultation on your custom magnet project.