Release Notes 7.0


ThumbsPlus version 7 includes new toolbar buttons and graphics with a Windows XP feel, improved menus, and a much wider selection of buttons to choose from.

Image Viewing and Editing

ThumbsPlus Pro now supports 16 bit per channel images: loading, viewing, editing and saving. The following functions work with 16-bit grayscale and 48-bit color images:

Adjust Colors

Invert Colors


Rotate to Line


Color Depth



Turn & Mirror


Color Balance

Remove Red-eye




Color Profile

Image Stamp




Swap Red & Blue



Corp/Add Borders

Alpha Channel

ThumbsPlus can now create, handle and view alpha channels in 24-bit and 48-bit images. Alpha channels will be loaded and saved to TGA, PNG and TIF files. You can use the View | Channels menu to select which channels to display.

Edit | Create Alpha Channel will create an alpha channel from the current selection.

A new View Bar is available, which displays three tabs:

Channels - Displays information about the image data, including channels displayed, position, RGB value at cursor, channel and intensity histograms, and an image map, indicating the portion of the image currently displayed and the current selection.

Info - Same as the Info tab in the main window.

Comments - Image comments.

Image rotation and resize are significantly faster, and bi-cubic is now available as an interpolation option for rotation.

Edit | Selection Mode allows you to select between rectangular, elliptical or freehand selection styles.

A new View | Preferences tab, Editing, is available where you can set various editing options.

A full Gaussian Blur filter is now available, which will blur to any specific pixel radius.

You can now select a default color profile (ThumbsPlus previously used sRGB) for viewing images. The selected profile will be used for images that do not have a color profile. Options | Viewing | Color Management.

A new fly-out menu is available Image | Mode for quickly switching between image modes (24-bit, 48-bit, 8-bit gray, 16-bit gray).

A new menu selection on the main menu, Edit | Paste Screen Shot will paste an image and convert it from monitor color space to the current working space.

The channels histogram (Image | Histogram) has been updated to look more like the view bar histogram and Photoshop CS.

The operation previews for Filter, Color Depth, Save JPEG Options and Save Jpeg2000 Options have been greatly improved, to allow various zoom levels and switching between the original and the changed or saved image.

File Formats - New and Updated

The following image formats will be loaded as 48-bit color (or 16-bit grayscale if appropriate):


Images loaded using Photoshop plug-ins

Images loaded using new Cerious plug-ins

Scanned images (TWAIN)

Olympus Confocal TIFF

A new digital cameral raw plug-in (plug_digicam.tpp) is available and in beta also, and file types loaded by this filter will be loaded as 48-bit..

The ORF and MRW formats are now supported by the new camera plug-in (plug_digicam.tpp) rather than directly in ThumbsPlus.

16-bit grayscale and 48-bit color images can be saved as PNG, TIFF or JPEG2000 files.

JPEG2000 now uses the PolyImagePro library from PolyBytes. Be sure "Load Using" is set to "PolyImage." 16-bit grayscale and 48-bit color images are supported.

You can select a default color profile for loading CMYK TIFF and PSD files that do not contain an embedded profile. (Options | Viewing | Color Management)

ThumbsPlus now stores and recognizes EXIF and IPTC information in JPEG2000 files, and will now store EXIF info in TIFF files. (IPTC was already available in TIFF files.)

The latest Kodak libraries are available in the tp_kodak.exe download.

The latest version of PolyimagePro is included for JPEG2000 and digital camera support.

A new EXIF option, "Rotate based on EXIF orientation" is used for JPEG and TIFF files. (Previously, JPEG files were not rotated based on EXIF orientation, and TIFF files were. This option controls both.)

AOL .ART files are now supported. Internet Explorer 5.0 or later must be installed for this to work properly.

Some EXIF loading and saving problems were corrected.



Thumbnail Creation and Storage

When ThumbsPlus makes thumbnails, it now calculates an MD5 digest of the entire file and stores this in the database. You may view and sort by the MD5 digest (Options | Show for Files, Options | Sort By). You can limit the file size for which MD5 digests are computed using Options | Preferences | Thumbnails. You can also display the MD5 digest in the Info Tab. The MD5 digest is stored in binary format in the database (in the metric3 field). If you need a text value – for example, if you're accessing the database from another application – you can can create a user field with the name "MD5" and ThumbsPlus will store it as text. The MD5 digest can be displayed or printed anywhere that File Info is available (contact sheets, catalogs, the Info tab, web pages, etc.).

Note that you must regenerate thumbnails for MD5 digests to be computed.

You can display the database thumbnail ID (unique for each thumbnail in the database) on the Info tab.

When sorting by Similarity (or right-click | Show Similar), ThumbsPlus will show an equals sign (=) on images whose metrics match the prior image exactly.

When sorting by MD5 digest, ThumbsPlus will show an equals sign (=) on files whose MD5 matches the previous file exactly. (This is almost guaranteed to mean the the files are identical, as long as the thumbnails are up-to-date.)

Many additional third-party client/server databases are supported, including DB2, MySQL, Postgres, and Pervasive. We're still working on Oracle support; there is a major bug in Oracle's handling of zero-length strings that may require significant source code changes. No other database we've tested with has this bug. (Oracle stores zero-length strings as NULL column values). Oracle does work properly except for files in the root folders of disks.

For people using multiple databases, a "Recent Databases" history is available from File | Database | Recent Databases.

File | Database | Export and Import have been improved to include volume aliases. For import into earlier databases, you must select the proper compatibility field when exporting.

Other new features

The File | Properties display is now resizable and will go backward and forward through all files in the folder (if one is selected), or through selected files (if multiple files are selected).

Options | Preferences has a new tab, Privacy, which you can use to control the items stored in the INI and TDO files.

The Tasks tab in the main window now shows the number of running and waiting background tasks on the tab itself. If a task reports errors, the icon will change to a red exclamation point.

The Parent folder and Favorites buttons on the Location Bar are now more obviously buttons.

Editing IPTC info from the main window (File | Edit IPC Info...) will now retain the original file dates if the option is selected in Options | Preferences | General (Retain original date/time...).

Options | Email will now locate MAPI e-mail clients installed for the current user only (rather than system-wide).

A new option is available in Options | Viewing | Other to reverse the zoom in/out direction when using the mouse wheel to zoom.

After moving files, ThumbsPlus was not selecting the next file in the list.

A option was added to Thumbnail | Remove Orphans for removing orphans in the current folder only.

Thumbnails of images with transparency (alpha channels) are now rendered on a white background. I'm thinking about making this configurable, but that will affect similarity matching. Your input is welcome.

A new option is available to select all orphaned thumbnails in the current display (Edit | Select by | Orphans).

You can now select Options | Sort by | Similarity as a secondary sort order (hold CTRL while selecting it). Note that sorting by similarity always changes the sort to ascending, since "descending similarity" is essentially meaningless.

The File | Properties | Info tab remembers the last selection (EXIF, IPTC, etc.) when changing images.

You can now set up file types as "linked" to other file types, so that copying, moving, deleting or renaming the "master" type will automatically do so for the linked types. Use Options | Preferences | File Types to locate the type and defined linked extensions. By default, .CRW and .MRW files are linked to .THM files.

The edit background color can be defined differently from the view window background color (Options | Viewing | Editing), and there is an option to use white for bi-level images.

Options | Preferences | File Types now includes an option for whether ThumbsPlus should attempt to resolve Windows shortcuts to files.

Image | Batch Process now handles parent directory specifications; i.e., "..\processed".

The last E-mail settings are now saved.

"My pictures" is now available as a tab in the folder tree.

Batch processing, contact sheets, and catalogs can now process gallery trees.

Maximum JPEG Q factor for thumbnails is now 96, and 1:1 subsampling (none) is used for Q factors >= 88.

JPEG quality and sampling can be automatically stored as user fields in the database; the names of the fields are "Jpeg Quality" and "Jpeg Sampling".

The Help | System Information dialog has been updated to include the database and profile paths and installation type.

You can now replace the ThumbsPlus toolbar buttons. This requires creating a "Toolbar.png" file in the ThumbsPlus installation folder, with the following properties:

The image should be 24-bit RGB with an 8-bit alpha channel
The image should be 960 pixels wide by at least 240 pixels high
Each button is 48x48 pixels

The file toolbar_sample.png in the ThumbsPlus folder shows the current buttons. You can use the menus or Options | Customize | Toolbar from the main and view windows to see the order that buttons should be placed in the image.

Windows 95 and NT4

Because of their age, there are currently limitations on these operating systems:

1. Color management is not available.

2. Cerious plug-ins and some Photoshop plug-ins may not work.

3. Kodak DCR/DCS image files are not supported.

4. The Web Page Wizard preview will not work without IE 6 or later.

There may be other limitations we are not yet aware of. We do not do comprehensive testing on these operating systems any longer.

Version 7.0 is likely to be the final version still capable of running on Windows 95 and NT 4.0.