BartMark Bitmap Encoder allows you to encode text messages into color or monochrome bitmap images. The encoding is key based, meaning you must have a number to encode and decode a message.

Encoded bitmaps can be converted to/from various non-lossy formats such as TIFF uncompressed or PNG.

BartMark Bitmap Encoder currently only produces fragile watermarks. This means that if the file is changed only slightly , the watermark (your message) will be destroyed.

The type of watermark used limits it's use for document validation/ownership except for monochrome bitmaps. Monochrome bitmaps that are converted to/from G4 TIFF are typically not converted to any other formats so BartMark watermarks remain intact.

Note: You must try to keep the Max Chars number as small as possible to decrease the time needed to decode. Entering in 5000 when your message is only likely to be 100 will waste you a lot of time.

Encoding and Decoding algorithms in use by BartMark are not linear time based. This means that the more text you try to encode the slower and slower it will become. Encoding over 10,000 characters can prove impossible on all but the fastest processors at the time of this release. Improvements may be made to the algorithms in future releases.