What are the Acceptable Image Formats for Banner Printing?
Beginning to prepare a Banner or Poster for Printing
Most of us use images and graphic files on our multiple devices: our laptops, phones, tablets and such. You can bring your files to a photo imaging shop, where they have kiosks you can plug your memory card or device into and print out your photos.
However, to design a banner or poster requires graphic imaging software such as Adobe Photoshop or Adobe Illustrator. In such graphic software, you start off with a blank canvas, and add in photos, text, graphic effects to design the banner or poster that you intend to produce.
You will also need to ensure that the images that you will be placing in the canvas are high-resolution enough so that when you print them out, they will be sharp and clear, instead of blurred or pixelated.
When starting out to design, remember to choose the correct image size, image resolution and color format.
IMAGE SIZE & IMAGE RESOLUTION
The image size is the size of the piece you are producing and want to print out. Eg. a portrait format A1 poster will be 59.4cm width x 84.1cm height at 150dpi. A 85cm x 200cm banner will be 85cm width x 200cm height at 150dpi.
For large-format printing purposes, usually opt for CMYK color mode.
ACCEPTABLE IMAGE FORMATS FOR BANNER PRINTING
If you are using Photoshop to design your banner, the acceptable image formats to save your file in are the following:
- JPEG (filename ends with .jpg or .jpeg)
- Photoshop EPS (filename ends with .eps)
- PDF (filename ends with .pdf)
If you are using Illustrator to design your banner, the acceptable image formats to save your file in are the following:
- EPS (filename ends with .eps)
- PDF (export your file as a high-res PDF file, filename ends with .pdf)
- AI (filename ends with .ai)
• TRY NOT TO SEND THE WORKING FILE
Certain image formats such as PSD and TIFF (for Photoshop) and AI (for Illustrator) saves the file with multi-layered design intact. This is a working file, which is still editable by the receiving party (ie. your printing vendor). This can cause some potential problems for the printing side. Also, working file are usually terribly HUGE in size.. this will cause you to spend a lot of time uploading it to the printing vendor, and the printing vendor will spend a lot of time downloading it on their side. Save all that trouble by opting instead for JPEG, EPS or PDF files.
• AVOID FONTS MISSING / LAYERS SHIFTING OR MISSING
When your printing vendor opens the file on their computer, some of the layers might have shifted or become invisible, some of the fonts for the text might change (because printing vendor might not have the same fonts which you have used on your computer installed on their computer).
• IF YOU MUST, ACCOMPANY WORKING FILE WITH SCALED-DOWN JPEG VISUAL
If you really have to send the working file to your printing vendor, then accompany it with a scaled-down jpeg visual (compressed so that it’s small and not too heavy in file size) so that your printing vendor can use it as a visual reference to compare against the working file when they have opened it on their computer. By comparing visually between the JPEG visual and the working file, they can ensure that everything is in order and no graphic element or text has gone out of alignment or gone missing.
• REQUEST JPEG VISUAL FROM PRINTING VENDOR
To be safe, you can also request for your printing vendor to send back a jpeg visual, so you can do a last check and confirm that they’ve gotten the correct file and everything looks in order before proceeding with the printing and production.
• REQUEST FOR TESTPRINT
If you are very particular about the colour, and want to be very sure before proceeding to print, you can request for a testprint from the printing vendor. They will print out portions of the artwork and a scaled down version to physically show you. Extra charges might apply for this service, and be prepared to allow more time for the production to finish, due to extra checking process.