Does Readdle support DRM-protected Adobe Reader ebooks?

Unfortunately, no.

How to delete document from Readdle?

You need to login to our standard web-interface using your desktop computer, then click on the document (green underlined link) and press "delete" button below.

How to download documents to my iPhone/iPod Touch?

To use Readdle offline, you should upload file (html pdf doc docx xls rtf txt gif jpeg png fb2) below 100kB size. Unfortunately offline reading is supported only for such small files.

When you open it, you will see additional screen with two options "View" and "Download". After clicking on "Download" there is an instruction for creating "Offline Safari Bookmark".

To access it later, open Safari on your iPhone/iPod Touch, click on "bookmarks" icon in the toolbar and open bookmark you've created on the previous step.

To delete offline document you should simply delete bookmark you've created.

Why my PDB file does not work with Readdle?

Generally speaking, 'pdb' is not a file format — it is a kind of container for many kinds of data. There are several incompatible book reader programs(usually for Palm) which use files with 'pdb' extension. Every Plucker book is 'pdb' file, but there are many other pdb-files(eReader books, iSilo books) which are not Plucker books. That's why we write "pdb (Plucker)" everywhere.