Start with the printer’s finished size
Write down the finished trim dimensions, bleed allowance per side and inside safety margin before making a canvas. They are three independent settings. A US Letter flyer might use 8.5 × 11-inch trim, 0.125-inch bleed and 0.125-inch safety. An A4 example might use 210 × 297 mm trim, 3 mm bleed and 5 mm safety. Confirm these assumptions with the provider for the actual product.
A 3 mm allowance is not the same as 0.125 inches: 0.125 × 25.4 equals 3.175 mm. Choose one basis consistently. Do not convert a printer’s exact 3 mm requirement into 0.125 inches, then claim the resulting file is the same size. The difference can matter when several pages, folds or panels need to align.
Build the full canvas and the inside guides
- Add bleed to both sides of width and both sides of height: full width = trim width + twice bleed; full height = trim height + twice bleed.
- Place the trim rectangle one bleed allowance from every outer edge.
- Place the safety rectangle inside trim by the specified safe margin. Its size is trim minus twice that margin.
- Extend backgrounds and edge images into bleed while keeping important text inside the safety rectangle.
- Keep guide lines on a separate layer and remove them from production artwork.
For US Letter with 0.125-inch bleed, the full canvas is 8.75 × 11.25 inches. At 300 PPI this becomes 2625 × 3375 pixels. For A4 with 3 mm bleed, full size is 216 × 303 mm and the rounded pixel canvas is 2551 × 3579. These are calculated examples, not evidence that a particular export has passed a printer’s preflight.
| Format | System | Trim | Full bleed | Safe area | Trim pixels | Full bleed pixels |
|---|---|---|---|---|---|---|
| US Letter | North America | 8.5 × 11 in | 8.75 × 11.25 in | 8.25 × 10.75 in | 2550 × 3300 | 2625 × 3375 |
| US Business Card | North America | 3.5 × 2 in | 3.75 × 2.25 in | 3.25 × 1.75 in | 1050 × 600 | 1125 × 675 |
| Postcard 4×6 | North America | 4 × 6 in | 4.25 × 6.25 in | 3.75 × 5.75 in | 1200 × 1800 | 1275 × 1875 |
| Invite 5×7 | North America | 5 × 7 in | 5.25 × 7.25 in | 4.75 × 6.75 in | 1500 × 2100 | 1575 × 2175 |
| Trade book 6×9 (single panel) | North America | 6 × 9 in | 6.25 × 9.25 in | 5.75 × 8.75 in | 1800 × 2700 | 1875 × 2775 |
| US Tabloid | North America | 11 × 17 in | 11.25 × 17.25 in | 10.75 × 16.75 in | 3300 × 5100 | 3375 × 5175 |
| EU Business Card | Metric | 85 × 55 mm | 91 × 61 mm | 75 × 45 mm | 1004 × 650 | 1075 × 720 |
| ISO A6 | ISO 216 | 105 × 148 mm | 111 × 154 mm | 95 × 138 mm | 1240 × 1748 | 1311 × 1819 |
| ISO A5 | ISO 216 | 148 × 210 mm | 154 × 216 mm | 138 × 200 mm | 1748 × 2480 | 1819 × 2551 |
| ISO A4 | ISO 216 | 210 × 297 mm | 216 × 303 mm | 200 × 287 mm | 2480 × 3508 | 2551 × 3579 |
| ISO A3 | ISO 216 | 297 × 420 mm | 303 × 426 mm | 287 × 410 mm | 3508 × 4961 | 3579 × 5031 |
Canva: extend backgrounds without moving text
When your Canva version offers a print-bleed view, enable it and inspect the outer boundary. Extend only the background image or color into that region. Resizing a whole grouped design can move type and logos too close to the finished edge. Unlink or separate those elements first, and keep the safety inset independent of the outer artwork.
For a print PDF, use the print-oriented export and check the settings requested by the provider. Crop marks are not a universal requirement: KDP cover submission specifically asks for them to be removed. Adding marks can also change the PDF’s outer page dimensions, so a canvas-size calculation alone does not establish the exported MediaBox or TrimBox. Inspect the final PDF rather than assuming the screen view matches its physical geometry.
If you instead choose a raster canvas in pixels, enter the calculated full-bleed pixel size at the intended PPI. Preserve your original work before changing dimensions. A low-resolution background stretched to fill the new canvas does not gain real detail; replacing it with a suitable source may be necessary.
Figma: verify physical export size
Frame coordinates and a PDF’s physical page size are not interchangeable without checking export scale. Use the pixel chart when producing a raster asset at a known final print size. For vector PDF output, inspect the resulting page dimensions in inches or millimeters and confirm the embedded images have adequate effective resolution at that size. Do not infer 300 PPI simply because a frame contains 300 pixels per intended inch.
One useful check is to compare the exported physical width with the planned full-bleed width. If they differ, correct the export scale or the physical page setup without distorting the aspect ratio. A vector text layer may remain sharp at many scales, while a placed raster image can become visibly soft. Those are separate properties.
Round once, after converting the whole dimension
At 300 PPI, 3 mm corresponds to approximately 35.433 pixels. Do not round that edge to 35 pixels and repeat it twice before computing the final canvas. Convert the entire 216 mm A4 width to inches, multiply by 300 and round the result. The calculator’s SVG/PDF guides retain fractional physical boundaries; a whole-pixel raster canvas cannot place every metric boundary on an integer pixel.
Separate flat sheets, book covers and book interiors
This chart describes four-edge commercial bleed around one flat trim rectangle. A KDP paperback interior with bleed adds it at the top, bottom and outside edge only. A 6 × 9-inch interior page is therefore 6.125 × 9.25 inches, not 6.25 × 9.25. A full book cover is a different layout again: two panels and one paper-dependent spine plus outside bleed. See KDP’s trim and margin instructions.
Final export checklist
- Confirm the exact trim, per-side bleed and safe margins with the selected provider.
- Inspect page boxes and artwork reach; a large BleedBox alone does not prove backgrounds extend into it.
- Check image resolution at final size, embedded fonts and intended color conversion.
- Remove reference layers and marks that the provider does not accept.
- Order or inspect an appropriate proof before committing to a production run.