The file formats you use for a design contest entirely depends on the type of contest you are working for.
For printing materials you need to use CMYK color mode with a resolution of at least 300dpi. File formats for CMYK print designs:
- PDF - Portable Document Format
- an Adobe Illustrator (.ai), Adobe Photoshop (.psd) or InDesign (.indd) file
- Note: if you are using a vector program, like Illustrator, you won’t need to worry about the resolution.
For electronic materials you need to use an RGB color mode at 72dpi resolution. File formats for RGB computer-based designs:
- PNG - Portable Network Graphics
- JPEG - Joint Photographic Experts Group
- Always give the contest holder editable files.
- PSD (Photoshop) is a raster-based editable file and is mainly used for web-based designs.
- AI (Adobe Illustrator) is a vector-based file that must be used for logo designs.
When you're designing a logo, make sure to supply the following file formats in CMYK mode:
- Adobe Illustrator (AI) file
- editable PDF
- On logo handovers, please additionally include a PNG in RGB mode for web use.
Note: For .CSD (CorelDRAW), please also provide editable PDF or convert your file to AI.
Remember: the contest holder may require additional files (TIFF, GIF, etc.) so check with them and give them the files they request.