Yes—resolution and colour profile matter for canvas, but the exact requirements depend on the printer and the canvas size. Many labs provide minimum image-size guidelines, so check those first. Viewing distance also matters: wall art can often look fine at lower print resolution than close-up prints, though portraits usually benefit from more detail.

For colour, many printers prefer sRGB/Adobe RGB variants depending on their workflow, so confirm their recommended colour profile before uploading.

Other important choices:

• finish: matte or glossy, if offered
• border/wrap: black, white, or image/gallery wrap around the edges
• frame thickness/depth: common options range from slim to deep wraps
• size/aspect ratio: you may need to crop your image to fit standard canvas sizes
• canvas material: some use polyester, others cotton
• protective coating: some printers laminate or coat the print
• frame tension/adjustment: useful because canvas can stretch over time

In short: don’t assume canvas print quality requirements are low. Use the printer’s file specs, choose the wrap/finish carefully, and make sure your image suits the final size and crop.