Features:
• Add Comments and Annotations to any PDF file
• Add & apply Custom Stamps from any Image or PDF File
• Mark-up pages with text and objects
• Type directly on any PDF page
• Export PDF pages or entire files to any one of the supported Image formats
• Extract text from a PDF page/File
• Fill and Save Adobe Forms to disk, email or 'post' !
• Full javascript Engine included
• Updated JPEG2000 Compression support
• Plug-Ins for both MS IE or Firefox Browser's included
• Add/Edit/Move Bookmarks
• Delete pages
• Insert/Import Pages (from existing PDF files)
• Extract pages to a new PDF or Image file
• Customize User Interface (Toolbar options etc)
• Flatten Annotations/Comments
• Insert Blank page
• Measurement Tools
• Summarize Comments
• Export Comments
• Improved JBIG2 Compression
• Scan Direct to PDF
• Convert Images Direct to PDF
• Convert Text files direct to PDF
• Print PDF as booklet, nUP, tiles, etc.

PDF-Xchange Viewer v2.5.188
Version 2.5 adds new features and many small bug fixes - the most notable new functionality being extensive support of XFA form types including dynamic PDF forms support - additionally developers and system administrators will be pleased to know this latest release no longer requires registration of an ActiveX in the users system, thus 'Administration' rights are not required.

PDF-Xchange Viewer v2.057
- Resolved application freeze when saving document or doing other complex operations (page insertion, Scan or Image to PDF etc).

PDF-Xchange Viewer v2.056
- Resolved issue with rendering some JPEG2000 streams with CMYK palette.
- Resolved rare application crash when opening already corrupt files.(T#456).

PDF-Xchange Viewer v2.055
- Added exclusive mode for non-commenting tools (see commenting settings in Edit Menu -> Preferences).
- Altered the method commonly used in Windows to load external dlls to prevent any (even theoretical) vulnerability regarding "DLL-hijacking" as reported for Windows applications.
- File Attachment tools are hidden in free version of the viewer when the 'Hide PRO features' option used.
- Fixed issues when rendering some fonts (T#432; T#332).
- Fixed issues with some non-ascii characters in some PDF files(T#332).
- Fixed possible issues when opening/extracting embedded files within secured documents.
- Fixed problems with browser plugin in latest FireFox (4) and Opera releases when they use customized title bar's.
- Implemented function to work with embedded files using JS. (8668)
- Resolved issue with frame size when viewer is embedded into browser. (8573)
- Resolved issue with wrong form fields content created by the viewer. (T#321; T#396) (8686)
- Resolved possible issue with layers visibity.
- Shift key is used to temporary toggle exclusive/non-exclusive mode.
- Styles for measure tools now have independent scale values. (8749)
- Viewer no longer modifes the Producer field in a document's information fields. Instead it uses a custom information field to store data regarding the version used to save a document.

PDF-Xchange Viewer v2.054
- Resolved issue with infrequent GPF on a unique corrupted page's content.
- Resolved infrequent GPF on some Acroforms.
- Resolved issue with handling 'Enter' key on Print dialog.
- Resolved issue with resizing properties toolbar.
- Resolved issue with retaining default text style in text editor.
- Resolved issue with handling integer numbers with more than one 'sign' character.
- Last used page size for insert empty pages is now remembered between sessions.
- Improved handling for changing layouts. (8283)

PDF-Xchange Viewer v2.053
- Added exclusive mode for commenting tools (see commenting settings in Preferences).
- Added message to indicate the last occurance of the target was reached when using the find operation. (8361)
- Added some additional information about document digital signatures (tooltip, singature properties dialog).
- Changed appearance of multiline form fields
- Changed hit-testing 'sensitivity' for link annotations. (8053)
- Fixed bug with "PAGE" name-generating macros in "Export to Images" feature.
- Fixed some issues with initial view. (8283)
- In Document -> Rotate Pages command page's rotation is determined using visible page's dimensions.
- Resolved issue with 'goto destination' when page's bounding box starts from negative coordinates. (8310)
- Resolved issue with bullets with non-embedded fonts.
- Resolved issues with rendering some tiling patterns.

PDF-Xchange Viewer v2.052
- Fixed error signing documents originally encrypted using AES algorithm.
- Fixed possible issue rendering shades with /BBox.
- Fixed charater mapping for embedded Type1 (CFF) fonts with only Differences in font encoding.
- Changed PDF file prefix from %PDF-1.x to %PDF-x.y, so viewer will now open - incorrectly formatted PDF files beginning with %PDF-0.0).
- Fixed possible GPF after saving document which contain form fields with 'unattached' widgets. (8278)
- Fixed possible GPF when moving more than one hyperlink on a page.
- Fixed issue coping with special characters (ligatures) from inside the PDF-XChange Viewer.
- Fixed issue switching keyboard layout when Alt key is used for switching, and the viewer is inside a browser.
- Fixed possible dead-lock during loading of bookmaks.
- Fixed bug with handling some keys (CAPS, SHIFT, CTRL) in text-editor.
- Fixed bug with incorrect printer margins set up. (8254)
- Fixed bug with handling NO-BREAK SPACE in the text-editor.
- Fixed bug with visibility state of hidden annotations in the Comments Pane.
- Fixed text-editor font issue when modifying text using a combination of Adobe/PDF-XChange Viewer. (8290)
- Resolved possible mismatch between image type and export mode in 'Export To Images' for multiple page files to single page formats.
- Fixed possible dead-lock with ALT key handling.
- Resolved problem with hotkeys and client's menu. (8235)
- Resolved issue with printing masked images when mask has differing dimensions to the image.
- Added comment "Remove White Spaces" which removes whites spaces (margins) on a document's pages. By default this command available only via customization options.
- Added feature for changing UI-fonts (see [Customize/Options] page). (8092)
- Added support for form submission via email. Other protocols will be supported in a future release.

PDF-Xchange Viewer v2.051
- Resolved possible crash with some files when /DeviceN colorspace is used.
- Resolved issue with Windows Explorer stalling (Shell Extensions). (8158)
- Fixed possible issue when saving 'hybrid' files and incremental updates (8127)
- Added work around for fonts with invalid values for the Subtype property.
- Resolved issue with wrong time zone information being stored in XMP Metadata. (8041)
- Fixed issue with printing permission detection if 40-bit security is used. (8156)
- Resolved some issues with show/hide toolbar(s) operations. (8036)
- Fixed issue with font size in the text form-field.. (8104)
- Fixed issue when resetting document toolbars. (8096)
- Fixed issue with child MDI window status. (8149)
- Added new option to skip 'IP' only URL links (e.g. no HTTP:// prefix) when auto-detecting URL(s).
- Fixed issue with UI-fonts. (8092)
- Fixed issue with context menus: wrong position or size in some cases.
- Fixed issue with the position of floating toolbars when muti/single monitor configuration is changed. (8132)
- Fixed state of frame-window when sending e-mail. (8148)
- Fixed behavior for the 'ExtractDocumentPages' operation, now returns the new document ID when successful.
- Fixed issue with importing of commens for fdf/xfdf files. (8062)
- Fixed issue with the positioning of an annotation if clicked by the mouse - when toolbars wrap.
- Added new feature: Attach & Send by email - as a ZIP file. (8158)
- Added 'Cut/Copy/Paste' commands in the context menu for the 'Select Tool'. (8140)
- Added new feature 'clone drag': clone a moved object(annotation) when 'Ctrl' is pressed. (8132)
- Added new features: create pdf from images/text files. (8003)
- Added new option to extract pages into one external file (see 'Operations.ExtractPages.ToOneFile').
- Added ability to sending source-file as a bug-report when any open-file error occurs.
- Added ability: auto-copy text from the find-box on the toolbar - to search pane when this pane is activated.
- Added feature to filter annotations by Author. (8212)
- Restored ability to save a document while editing text within 'Comments'. (8093)

Fixed memory usage: removed annoying memory leak. (9412)
Resolved issue with newly placed text-underlines (T#638).
Fixed issue with context menu notification. (9126)

Fixed memory usage when application is minimized to taskbar or tray area. (9412)

Fixed issue with toolbars accesibility in fullscreen mode (T#304).

Fixed page display problem in full screen mode (T#667).

Fixed issue with import/export of *.fdf files (T#706). (9554)

Resolved some issues with form filling and undo/redo for acro-forms (T#670, T#698). (9506)

Fixed issue with the appearance of visible page area and selection in thumbnails view (T#690).

Fixed some rendering and interaction issues in XFA-forms.

Added some additional options for customization and appearance of command bars ([Customize Toolbars/Options]). (9380)

Added optional toolbar for full screen mode. (9380)

Added option to use current pages view for full screen mode (T#304).

Add some new features for operating with document attachments (T#690). (9328)

Reduced application's start-time.

Added support for submitting XFA-forms via email (fdf, and pdf attachments).

Fixed GPF when loading files with cyclic xref tables. (T#707)

Fixed possible GPF when loading files with self-referencing objects. (T#736)

Resolved issue decoding JBIG2 images. (8857, 9517)

Fixed issue with possibe viewer crash on corrupted TTF files. (T#752)

Resolved issue with some embedded TTF symbolic fonts. (T#716)

Fixed issue editing singleline text XFA-form fields. (T#719). (9362)

Resolved issue with movement of annotations by the arrow keys on rotated pages. (T#726).

Added option to hide tab bar for single document (see Preferences/General page). (T#410).

Added 2 new shortcuts for fast, full search of selected text: Ctrl+F+F(hold Ctrl and press F twice); Ctrl+Alt+F.

Added new feature for more precise memory usage limits(see Preferences/Performance page) (T#749).

GIF files with transparency now supported for 'Stamps'

Changed behaviour with touch screen. (T#647, T#493)

Fixed bug with line spacing in the multiline text annotations. (T#788).

Fixed rendering issue when document has pages with varying rotation angles. (T#771).

Resolved problem with touchscreen capability (scroll by touching vs commenting tools). (T#767).

Resolved problem with text selection. (T#787).

Allowed incremental saving of document when document contains non-critical errors.

Resolved issue with transparent text render mode for Type3 fonts. (T#804).

Added "Enter Serial Key..." item into Help menu. (T#821).

Added "New document from scanner" on the main toolbar.

Change List:
Fixed bug for EU-application for logoff/shutdown of the system. (10207)
Fixed possible GPF on modifying annotations with popups. (T#850)
Resolved issues when reporting some digital signatures as invalid. (T#292, T#837).
Added new named event (Notifications.EndSession) to resolve problem with logoff/shutdown system. (10207)
Command "Show/Hide main menu" (F8) now is disabled when toolbars are locked. (T#838)

Fixed possible crash (rare) on opening files with specific xref table.
Resolved issue with showing text labels on some buttons.
Fixed the algorithm for autorotating pages in "Multiple pages per sheet" printing mode. (T# 908)
Fixed issues with showing shortcuts in menu when viewer runs under WINE. (10421)
Resolved issue with adjusting scroll position in Continues mode. (10295)
Resolved issue snapping points for measure tool when snap is turned on. (T#918)
Improved printing masked images in some cases. (T#490)
Added workarround for opening a document with an incorrect encryption dictionary. (T# 908)
Toolbar for IE8 now is visible when installed with standard user priviledges. (10395)
Resolved issue with deleting pages in PDFs with incorrect StructureTreeRoot dictionary. (T#895)
Several changes and improvements in handling XFA forms. (T##917,773,362,836,855)