Optimize the size and quality of your JPEG images.

JPEG Imager is an interactive image compressor. It provides a real-time preview of a compressed image and handy means to compare it with original one. You can fiddle with various compression parameters and observe the effect of changes almost instantly. You can also specify a desired file size and let the program select the proper value of the quality parameter automatically. In short, JPEG Imager is perfect for Quality vs. File Size optimization. It may prove to be very useful if you need to optimize your images for publishing in the Web. Speaking about other features, JPEG Imager includes a set of basic image manipulation and enhancing operations such as Resample (resize), Crop, Rotation, Gamma correction, Levels adjustment and so on. There is also a cleaning tool for noise removing and, of course, the TWAIN support for image acquisition from scanners and digital cams. Working with JPEG Imager you can acquire, enhance and optimize your images not having to use any other programs. Besides, JPEG Imager has a simple built-in batch processor and thumbnail generator.

Version 2.0 has a completely renewed interface, it works faster and is easier to use. New features include: improved JPEG compression (especially in progressive mode); interactive compression to PNG format; additional image enhancement tools; improved batch processor.

Special requirements: None
Target OS: Windows 98/ME/2k/XP/Vista

Awards

• Fast interactive compression to JPEG, PNG^* or GIF^* files.
• Real-time preview of compressed image.
• Various compression controls.
• Synchronized Side By Side view.
• Handy tools for image scrolling and zooming.
• Basic image manipulation and enhancing operations.
  • Resampling (resizing), cropping
  • Rotation/Flipping
  • Brightness, Contrast, Gamma correction
  • Levels adjustment^*
  • Color balance, Tones adjustment^*
  • Negative^*, Conversion to Grayscale
  • Convolution filters (Sharpen, Blur)
  • Cleaning (noise reduction)
• Image acquisition from scanners or digital cameras via TWAIN.^*
• Simple built-in batch processor and thumbnail generator.

• High compression ratio with good picture quality.
• Separate quality controls for luminance and chrominance.
• Flexible setup of color components subsampling.
• Progressive mode supported (greatly improved since v1.01).
• Selective extra-compression mode.
• Fit to file size feature - automatic quality adjustment.^*
• Optional retention of application specific data (such as EXIF) in APP1-15 marker segments.^*
• The ability to edit or automatically replace embedded JPEG file comment.
• Optional insertion of Restart Markers (integrity marks).

Version 2.4.3.161 (February 28, 2008) [download]
• Rewritten color quantization algorithm (PNG, GIF):
• PNG8 palette semi-transparency support
• More accurate color conversion
• Noticeably improved quality of dithering

Version 2.4.2.124 (December 4, 2007)
• Added rotation by an arbitrary angle.
• Improved gradual blending effect in Add Border command.
• Updated documentation.
• Some minor GUI fixes.

Version 2.4.1.37 (August 21, 2007)
• Added "Display interpolation" option to the Preferences dialog. You can choose between speed and quality of the viewer. The fastest method "Nearest neighbor" is set by default for consistency with older versions.
• Added "Convert to sRGB..." command for color profile conversion. Available only if an embedded profile is present in the image.
• Improved viewer performance and greatly reduced memory usage as compared to version 2.4.0
• The Resample command has been renamed to "Resize".
• Windows 98/Me compatibility fix.
• Various minor bug fixes.
  
  
  
  
  Version 2.4.0.36 Beta (July 11, 2007) - interim test release.
• Added basic support for ICC color profiles. Images with embedded profiles are now color-corrected on-the-fly when displayed in JPEG Imager. The display profile (if available for your monitor) is ignored by default. You can enable it in the "Color Management" dialog box that now can be found on the View menu.
• Internal: Added support for hyper-threading and multi-core processors. Some of per-pixel image operations can be transparently distributed between logical processor "cores" available in the system.
• Major performance improvements for all operations utilizing image filtering (convolution): Gaussian Blur, Resample etc.
• Added initial support for importing various bitmapped image file formats: including TIFF, PSD, TGA, DDS, MNG, etc.
• Now, semi-transparent images are always shown alpha-blended with a chessboard pattern used as a background. When you work with the Transparency tool you can choose to view the image over a checkered or solid color background.
• Improved zoom: scaled down images are filtered to reduce aliasing artifacts (such as jagging, moire and the like).
• Fixed a bug with the "Levels" tool that caused alpha-channel corruption.
• Fixed a shameful bug in the "Text Overlay" tool, where the font selection button was not working.
• Updated PNG supporting library (various bug fixes).
  
  Version 2.3.1.34 (November 20, 2005)
• Added polygonal selection tool.
• Added auto-scroll when selecting large rectangular areas.
• Added "Select All" and "Invert Selection" commands.
• All selection tools have been moved to a separate submenu.
• Please note: Now you should use double click instead of single click to deselect the current selection. However, this might be changed in future releases.
• Fixed a bug that caused an AV error message when you cancel a running image operation with "Soft Edge" option enabled (in Selective Edit mode).
• Improved stability when loading damaged or incomplete files.
  
  Version 2.3.0.32 (October 13, 2005)
  Because of major internal changes, this version should be considered BETA. Use it at your own risk.
• Added "Soft-Edge" (aka Feathering) control: smoothes transition between selected and unselected areas. Applicable to any tool that works with selections, so the effect of the tool can be seamlessly blended with the background.
• Added "Freehand Select" (aka Lasso) tool.
• Added drag-scroll with right mouse button while using selection tools.
• New selection tool modifier: Ctrl+Shift - enables intersection mode.
• The "Selection" checkbox that was available on some windows has been moved to a separate toolbar (along with new soft-edge controls) and has global effect now.
• Fixed a bug with "Metadata" window: it was not possible to change the comment text in some cases.
• Added some performance optimizations for jpeg decoding/decompression.
• Minor fixes and tweaks.
  
  Version 2.2.2.29 (August 25, 2004)
• New command: "Add border".
• Internal: the program's anti-cracking protection has been changed.
  
  Version 2.2.1.27 (June 30, 2004)
• Added several MMX optimizations to JPEG codec -- Can be enabled from the Preferences dialog box.
• Some minor bugfixes (mainly in Text Overlay tool).
  
  Version 2.2.0.26 (June 1, 2004)
• Added "Text Overlay" tool -- allows adding text captions to your images.
• Added an ability to view and edit PNG embedded text strings.
• Improved support for GIF and palette-based PNG files (mainly with transparent color).
• Now the alpha-channel (transparency information) can be converted into simple (single color) transparency in order to be stored in palette-based formats.
• Fixed incorrect palette size (larger than necessary) when writing palette-based PNG files.
• Other minor fixes and tweaks.