TL;DR
For the simplest upload, use a high-quality, large JPEG. Flattened TIFF and PNG files can also be uploaded when they are saved in RGB with no transparency or alpha channel. Files that contain an alpha layer cannot be uploaded through our current uploader.
Ready to print? Learn more about our giclée printing process and order museum-quality fine art prints.
File Format Options
When working with digital print shops, a digital file of your image is required for giclee printing. We recommend a high-quality, large JPEG for the simplest upload. Flattened TIFF and PNG files are also acceptable when saved in RGB without transparency or an alpha channel.
Before uploading, flatten or merge all visible layers, replace transparent areas with white or your intended background color, and remove any alpha channels. Files with transparency or an alpha layer cannot be uploaded through our current uploader.
In Photoshop:
- Use Layer → Flatten Image (or merge visible layers), then confirm that no alpha channels remain in the Channels panel
- Export a high-quality JPEG, or save a flattened TIFF or PNG copy with an embedded RGB color profile
Avoid using PDF, WEBP, PSD, layered files, or low-resolution files when printing through The Stackhouse Printery. For the safest upload, choose a high-quality JPEG. If you use TIFF or PNG, upload only a flattened RGB copy with no transparency or alpha channel.
Pro tip: Keep your layered master file for future editing, then create a separate flattened, print-ready copy for upload. If your artwork needs a background, fill transparent areas with white or the intended background color before exporting.
Before printing, double-check your export settings to ensure accuracy. Verify the image size, resolution, and file type to ensure everything meets print requirements. If your file resolution is too small, our website will automatically restrict unsupported sizes.
Pros and Cons of File Formats
| Format | Pros | Cons |
|---|---|---|
| TIFF (.tif) |
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| JPEG (.jpg) |
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| PNG (.png) |
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Flattening Layers
Before sending a file to print, flatten or merge all visible layers and remove any alpha channels. Save the flattened version as a new copy with the proper size, resolution, and format to protect your original file. This prevents color or blending issues and ensures the file can pass the current uploader’s no-transparency requirement.
Embedded Color Profiles
At The Stackhouse Printery, our printers require files in an RGB color space to take advantage of our 12-ink Epson system, which offers a wider color range than traditional CMYK printers. Embedding a color profile ensures your file displays and prints accurately across different devices.
Recommended color profiles:
- ProPhoto RGB – widest color range
- Adobe RGB (1998) – large gamut and widely supported
- sRGB – safe for web previews and most monitors
For more guidance on print setup, review our Artwork Submission Guide or read our article on ICC profiles.
Still unsure if your file is ready to print? Email us your artwork and our team will review it before production.
