In order to customise the bleams and covers, placing one or several images can be ideal. However, some recommendations are to be taken into account.

Recommended formats

The conventionally Chrome compatible formats are encouraged:

• JPEG in RGB
• GIF
• PNG

About the weight :

• Less than 1Mo per image, for better performances

Formats to avoid

The uncommun or old formats involve some incompatibility risks:

• JPEG in CMYK
• PNG in 16 bits
• WebP
• BMP
• TGA
• PCX

About the weight :

• Beyond 1Mo per image, the performances may decrease

About the dimensions:

• An image way too big compared to its use might lower the performances
  • Example : A 4000px wide picture used in a 1000px wide cover
• An image smaller than its use might impact the visual aesthetics (pixelated picture)
  • Example : A 300px wide picture used as 500px wide cover button

Additional note

• Square shaped pictures are not mandatory
• The TIF format images :
  • Are not read on Android. The Android default image reader is not able to read .tif.
  • Are read by iOS. The iOS default image reader is able to read .tif.