Custom Postcards Printing
4×6 & 5×7 · Premium Cardstock
Custom postcards are one of the most cost-effective ways to deliver your message directly to customers. Mail them, hand them out, or include them as inserts — custom postcards offer a tangible, personal touch that digital ads simply can't match. Available in 4"×6" and 5"×7" sizes on premium cardstock.
Why Choose Our Custom Postcards?
Premium postcard printing that connects your brand with customers.
Available Sizes
Two standard postcard sizes for every marketing need.
Cardstock Options
Four premium paper stocks to match your brand and purpose.
File Setup Guide
Submit print-ready files for fast, accurate production.
| Trim Sizes | 4" × 6" or 5" × 7" |
| Document Size with Bleed | 4.15" × 6.15" or 5.15" × 7.15" (tighter bleed = more usable space) |
| Cardstock | 14pt Glossy, 14pt Matte, 16pt Glossy, 16pt C1S |
| Printing | Single-sided or double-sided (same price) |
| Color Mode | CMYK only |
| Resolution | 300 DPI or higher |
| Fonts | All fonts must be outlined before saving (including PDFs) |
| Effects & Transparency | All transparency, shadows, and effects must be rasterized |
| Accepted Formats | PDF, JPG, PNG, Adobe Illustrator (AI) |
How It Works
From upload to delivery in 4 simple steps.
Popular Uses for Custom Postcards
Versatile postcard printing for every industry and occasion.
At a Glance
Everything you need to know about custom postcard printing.
- 4" × 6" and 5" × 7" Sizes – Two standard USPS-compatible mailing sizes
- Premium Cardstock – 14pt Glossy, 14pt Matte, 16pt Glossy, and 16pt C1S options
- 16pt C1S – Glossy front for vivid visuals + writable matte back for mailing and notes
- Double-Sided at Single-Sided Price – Full-color printing on both sides at no extra cost
- No Coating Applied – Eco-friendly production that's easier to recycle
- High-Resolution Printing – Sharp text and vivid color reproduction on every postcard
- Versatile Uses – Direct mail, handouts, package inserts, invitations, and more
- Print-Ready Files Only – No design services; submit final artwork ready to print
Design Templates That Make
Every File Print-Ready
Download free design templates for all RedPrinting products. Each template includes the correct trim size, bleed, and safe margin, so your artwork prints exactly the way you designed it.
Sticker Templates
Individually cut stickers in every shape and size, plus multi-design sticker sheets.
Business Card Templates
Standard, mini, and square formats for every card design.
Artwork Guidelines That Get
Every File Print-Ready
Every file submitted to RedPrinting is reviewed by a real person before it goes to press. This guide walks you through file formats, resolution, bleed, and cut lines — so your stickers, labels, and cards come out exactly the way you designed them.
Not a Designer? We'll Handle It
Free artwork setup is included with every order.
You don't need design software or print experience to order from us. Send us your image in any common format and our in-house design team will build the print file for you — adding bleed, positioning the cut line, and adjusting the resolution at no extra charge.
If your artwork needs a change we can't make on our own, we'll email you before printing. Nothing goes to press without your approval.
The Three Lines on Every Template
Understand these and your file will cut clean every time.
Accepted File Formats
Vector files give the sharpest results, but we accept high-resolution raster files too.
| Format | Type | Best For | Recommended |
|---|---|---|---|
| AI | Vector | Logos, text, line art, custom shapes | Best |
| Vector | Print-ready files with fonts outlined | Best | |
| EPS | Vector | Legacy vector artwork | Best |
| PSD | Raster | Layered photo-based designs | Good |
| PNG | Raster | Designs needing a transparent background | Good |
| JPG | Raster | Photographs and full-color images | Good |
| TIFF | Raster | High-quality scanned or photo artwork | Good |
- Outline your fonts – Convert all text to outlines or curves so typefaces render correctly on our end.
- Use CMYK color mode – Printing is a CMYK process. RGB files are converted automatically, and bright neon or vivid blues may shift slightly.
- Flatten transparency – Complex transparency and drop shadows can behave unpredictably; flatten them before exporting.
- Embed or attach linked images – Missing links are the most common reason a file gets sent back.
Image Resolution
300 DPI at final print size is the target.
Resolution is measured at the size the artwork will actually be printed. A 300 DPI image looks crisp on a 2-inch sticker but turns soft when stretched across a 24-inch poster. Always check the pixel dimensions against the finished size, not against how the file looks on screen.
Web images pulled from a website or social media are usually 72 DPI, which is roughly a quarter of the detail we need. Enlarging a low-resolution file doesn't add detail back — it only makes the softness more visible.
Low-quality artwork? Send it anyway. Our designers will do everything possible to bring it up to print standard, and we'll tell you honestly if a file won't hold up.
Choosing Your Material
Where the sticker will live decides which stock to use.
- Waterproof and tear-resistant
- Resists fading from sun and weather
- Holds up on bottles, laptops, and cars
- Higher cost per sticker
- Thin, smooth, and easy to write on
- Noticeably lower cost per sticker
- Ideal for packaging, boxes, and mailers
- Not water- or weather-resistant
Clear stickers are printed on transparent vinyl, so the surface underneath becomes part of the design. They're waterproof, tear-resistant, and work beautifully on glass bottles, cups, laptops, and windows where a white sticker edge would look out of place.
Because there's no white backing, light colors and white ink behave differently than they do on paper. Designs with bold shapes, dark colors, or deliberate negative space tend to read best.
Setting Up Sticker Sheets
Multiple designs and sizes on a single sheet.
Sticker sheets let you print several different designs together on one backing sheet. Our sheet templates come pre-populated with placeholder artwork that you replace with your own files.
Common Mistakes to Avoid
The issues that most often send a file back for revision.
- No bleed on the background – Artwork that stops at the die line leaves white edges when the cut shifts. Extend it a full 0.075 inch past the finished edge.
- Text too close to the edge – Anything outside the safe area can be trimmed off. Pull text and logos at least 0.075 inch inside the die line.
- Low-resolution images – Artwork saved from a website prints soft and pixelated. Work from the original high-resolution file whenever possible.
- Live fonts not outlined – Fonts we don't have installed get substituted. Convert all type to outlines before exporting.
- RGB color mode – Vivid RGB colors can't always be matched in CMYK. Design in CMYK to see accurate colors from the start.
- Die line left in the artwork – The cut line is a guide, not a design element. Remove it or keep it on its own separate layer.
- Wrong template size – Make sure the template you downloaded matches the size you actually ordered.
From File to Finished Print
What happens after you place your order.