Print sizes come in a handful of shapes. A5 to A0 share one ratio (1:1.41), 12x18, 16x24, 20x30 and 24x36 share 2:3, 18x24 and 24x32 are 3:4, 8x10 and 16x20 are 4:5, and squares are their own shape. A file prints cleanly only at sizes with its own shape, so a 3:4 Midjourney render fits two common poster sizes out of more than twenty. This free checker reads your artwork, tells you which sizes it fits as it is, and for every other shape makes a version with a white border or cropped to fill, at your file's own resolution, ready to download. It is the same maths PSDmate uses when it publishes a listing in every size a seller offers. It runs in your browser, and the file is never uploaded.
Check your artwork
Drop your artwork here
One image. Nothing is uploaded.
How to use it
- Add your artwork — Drag one image onto the drop area or click to choose it. PNG, JPEG and WebP all work. The file is read in your browser and never uploaded.
- See which sizes fit as is — Every print shape is shown with the sizes in it. Shapes your artwork already matches are marked as fitting, and those sizes can be printed straight from your original file.
- Choose border or crop — For the shapes that do not match, pick a white border to keep the whole artwork, or crop to fill the shape. The previews update so you can see what each print will look like.
- Download the files you need — Each shape that needed changing has a download button. The JPEG it gives you covers every size in that row, so five files at most cover all the standard poster sizes.
The problem this solves
You price twelve sizes and your file fits two. Send the other ten to a printer and it will crop, stretch or pad the artwork its own way, and you find out from the buyer. Making a correctly shaped file for each size by hand is tedious enough that most sellers just stop offering them.
What it does
Every shape at once
Shows the A series, 2:3, 3:4, 4:5 and square side by side, with the sizes in each, so you see in one glance which of your sizes the file already fits.
Border or crop, previewed
Switch between a white border, which keeps all of the artwork, and a crop that fills the shape. The preview shows exactly what the downloaded file will look like.
Download the print file
Each shape your artwork does not fit gets a JPEG at your file's own resolution. Nothing is upscaled, so the file never claims more detail than the artwork has.
DPI at the largest size
Each shape shows the effective DPI at the biggest size in its row, so you know whether one file can carry the whole row.
Nothing leaves your browser
The artwork is drawn on a canvas in the tab. No upload, no account, no file stored anywhere.
Where it lives in PSDmate
Free and open on this page. Inside PSDmate it happens automatically when you publish: every size you enable in Listing defaults is listed, and sizes your artwork does not fit get a bordered or cropped print file, whichever you chose in settings.
Questions
Why does my artwork not fit A4?
A4 is 1:1.41. Most AI art and phone photos are 3:4 or 2:3, which are wider or narrower than that. Printing a 3:4 file at A4 means trimming about 6% off the sides, or adding a thin margin at the top and bottom.
Should I crop or add a border?
Crop when the edges are background, like sky, sea or a plain wall. Add a border when the subject or any text reaches the edges, or when a margin suits the style, as it does with minimalist and gallery prints.
Does one file cover every size in a row?
Yes. Sizes with the same shape are scaled versions of each other, so one 2:3 file prints at 12x18, 16x24, 20x30 and 24x36. Check the DPI shown for the largest size in the row.
Will this make my image higher resolution?
No. Files are made at the artwork's own resolution. Use the print file checker to see the DPI at each size, and upscale first if the largest sizes come out under 150.
Is my artwork uploaded?
No. Everything is drawn in your browser and the downloads are generated on your device.
Read more
- How to Sell One Poster in Every Print Size (Crop or Border)
- Poster Sizes in Pixels
- Poster Size Standards Guide
- Print file checker
Other tools
- PSD Mockup Automation Without Photoshop — Every design across every template in one job, from the PSD files you already own.
- AI Art Generator for Print-on-Demand — Generate artwork at print resolution, with your own provider key and your own prompt library.
- Brand Kits, Frames and Layouts for Etsy Listings — Every listing image looks like it came from the same shop, without rebuilding it each time.
- Etsy Listing Video Maker — Turn the mockups you already rendered into the listing video Etsy pushes in search.
- Etsy Listing Automation and Bulk Upload — Render, write and publish a whole batch of listings to Etsy in one run.
- Etsy SEO and Listing Copy Generator — Titles, tags and descriptions written from the actual rendered image, not from a keyword you typed.