A "bleed" is when your graphics or color extends all the way to the edge of your printed page. A commercial offset or digital printing press cannot print all the way to the edge of a piece of paper, so your page that has a "bleed" will be printed on an oversize sheet, then trimmed to size. Sometimes multiple pages will be printed on a larger sheet, then cut down to size.
Since it is impossible to cut exactly to the edge of your design, you'll need to extend your designs past the edge of your page— at least 1/8".
What is the "Safe Zone?" The safe zone is the 1/8" inside of the cutting edge in which no text or important information should be placed. Any graphics in this area risk being clipped when cutting. We recommend that you allow even more - 3/16" - to avoid having your piece look "crowded."
BLEED - We cut off the bleed area to avoid white strips on the edge. Make sure any images or colors fill this area.
TRIM LINE - This is where we make the cuts!
SAFE AREA - Make sure no text is outside of the safe area, as it may be trimmed off.