DocuFreezer is a powerful desktop converter for Windows which can convert multiple documents, images, drawings, and other files at once to a convenient format – PDF, JPEG, PNG, TEXT, or TIFF. In this article, you will find a detailed description of DocuFreezer settings.
Browsing for files and folders

If you want to add one or several files – click this button. The Add files dialog window appears. There you can browse for files for conversion. Besides, you can add RAR, ZIP, 7ZIP, and other types of archives. The program will convert files within the added archive(s).

If you want to browse for a folder with files – click this button. This way, you can add an entire folder with files. To set only certain file extension(s), change *.* macro (e.g., *.doc,*.docx) next to File types to add.
Managing file lists
![]() | Click this button to remove one or several selected items in the List of files |
![]() | Click this button to clear the List of files entirely |
![]() | Click this button to save all currently added files as a list for future use. The list will be saved as a .flist file |
![]() | Click this button to load a previously saved list of files (.flist file). You can also use an Excel spreadsheet (XLS, XLSX) with file paths, each listed on a separate line. |
Configuring settings
To open the settings window, click the Settings button on the top menu:

Common settings
Depending on the output file type selected, these settings vary.

No matter which output file type you choose, you can set Page range – by selecting all pages or a specific page range. Set all, one, or several pages to process. Type page numbers and/or page ranges separated by commas. For example: 1,3,5-10,25. To select pages from the end of the document, use the syntax last (last1 for penultimate page, etc,). For example: 1,5,last2,last1,last.

Note: using this setting, you can extract certain pages from multipage documents and save them separately or as multipage files.
Setting | Description |
---|---|
Output file type | Select output file format for your incoming files: JPEG, PDF, PNG, TEXT, TIFF |
Multipage | Set multipage option which will control the structure of output files:
|
Combined file | Set filename of a multipage output file. Default name: "Combined.pdf" |
Make PDF searchable (OCR) | Recognize text from images or image-based files. This feature allows extracting text into searchable PDF or plain TXT file(s) via a built-in OCR module. |
OCR languages | With the previous feature enabled, you can select one or more OCR languages. As of version 3.2, English, French, German, Hebrew, Japanese, Portuguese, Russian, Spanish, Polish are available. Try to choose as few languages as possible at once in order to improve OCR accuracy. |
JPEG
Setting | Description |
---|---|
Color space | Set color space (color mode) for output JPEG files. You can select between:
|
Quality | Set JPEG quality. You can adjust the quality within a range of 25-100%. Default value: 85% |
PNG
Setting | Description |
---|---|
Color space | Set color space (color mode) for output PNG files. You can select between:
The difference between Grayscale and Monochrome is that grayscale mode preserves different shades of gray, and monochrome preserves only black & white colors. See illustration |
TEXT
Setting | Description |
---|---|
OCR (Optical Character Recognition) | Enable this feature to batch convert scanned documents or images to plain text (TXT) via OCR |
OCR languages | With the previous feature enabled, you can select one or more OCR languages. Note: the fewer languages are selected, the more accurate OCRing will be. |
TIFF
Setting | Description |
---|---|
Color space | Set color space (color mode) for output PNG files. You can select between:
The difference between Grayscale and Monochrome is that grayscale mode preserves different shades of gray, and monochrome preserves only black & white colors. See illustration |
Compression | Set level of TIFF compression algorithm to reduce output file size. You can manually select between:
|
Multipage | Set multipage option which will control the structure of output files:
|
Combined file | Set filename of a multipage output file. Default name: "Combined.tif" |
Advanced settings

Task processor
Timeout [+][-]
Default: 5 minutes
Set a time limit on processing a single file. After this time is over, DocuFreezer will proceed to another file.
Memory leaks limit [+][-]
Default: 512 MB
Set limit on random-access memory allocated for DocuFreezer. If the amount of memory leaks exceeds a certain limit, the program engine restarts automatically. This lets DocuFreezer process any number of files per session without interruption.
Restart after jobs number [+][-]
Default: 4096 jobs
Automatically restart the program engine after a certain number of jobs.
Enable custom scripts [+][-]
Default: Yes
Allow custom scripts if you have a custom version of DocuFreezer.
Display progress bar for each file [+][-]
Default: Yes
The DocuFreezer main window displays the status of each file being processed. Turning this setting off may improve the performance when processing small files, but progress bar indicators will not be displayed.
Raster image engine [+][-]
Default: GDIPlus
Select between GPIPlus or Graphic Processor. Please don't change this setting unless it was advised by our customer service.
Disabled helpers [+][-]
Default: Acrobat
Disable specific components that are used by the program to process certain types of files. Please do not change this parameter unless it was advised by our customer service.
Files and folders
Keep source files available for editing [+][-]
Default: No
Enable this setting to be able to open and edit the source files when they are being converted by DocuFreezer.
Temp folder [+][-]
Default: %TEMP%
Change the folder where temporary files created by DocuFreezer are located. By default, it is C:\Users\[User]\AppData\Local\Temp.
Password list [+][-]
Default: none
Enter the password for the source file(s) to batch convert password-protected documents. If you have more than one file secured with passwords, input several passwords, each on a separate line.

Restore subfolders [+][-]
Default: Yes
Keep the same subfolder structure as in the input folder (if a folder is set as a source). This setting works only if you use the Add folder button to add files.
Recurse subfolders [+][-]
Default: Disabled
Allow subfolder recursion – the program will take files from subdirectories and convert files from them too. Check the box next to Include files in subfolders to enable this feature and (optionally) enter paths to folders that should be ignored. This setting works only if you use the Add folder button to add files.
Existing file action [+][-]
Default: Create new file
Define what DocuFreezer should do if the output folder already has a file with the same filename: Create new file, Overwrite, Skip.
Destination file password [+][-]
Default: none
Enter a password to password-protect converted files. Password protection will apply to all successfully processed files from the current List of files.
Keep output files on any error [+][-]
Default: Yes
Define what DocuFreezer should do if it encounters an error (for example, if a watermark file is missing). If changed to No, the program will not save files in the output folder in case of any error.
Output filename template [+][-]
Default: {*SrcFilename}{*WorksheetName}{*SrcFileMPageNo}.{*DstFileExt}
Modify the output file name template using macros or arbitrary text.
- {*SrcFilename} – source file name;
- {*WorksheetName} – worksheet file name (for Excel or CAD files);
- {*SrcFileMPageNo} – source file page number;
- {*DstFileExt} – destination file extension.
Keep source files' original date/time [+][-]
Default: No
Save the source files' properties and apply them to the converted files: last write (last modified) time and date.
Exclude files by mask [+][-]
Default: ~$*.*, *.db, desktop.ini
Exclude certain types of files that are not wanted in the List of files. To rule out files with a specific file extension, add them in the dropdown list, each on a separate line (after ~$*.*, *.db, and desktop.ini). File extensions should be added this way: *.[file extension]
Destination file password [+][-]
Default: none
Enter a single password to password-protect the output files. Password protection will apply to all files from the current List of files.
Page layout
Rasterization resolution [+][-]
Default: 300 dpi
Set DPI (Dots Per Inch) which defines resolution and image quality. Resolution can be set in a range between 70 to 2028.
300 DPI is suitable for standard quality, e.g. text documents. 600 or higher is good for high-quality images or photos. Generally, we don't recommend setting it lower than 300 (the output file may have low quality) or higher than 1200 (processing may take much time).
Use rasterization anti-aliasing [+][-]
Default: Yes
Use a rasterization algorithm with anti-aliasing. Anti-aliasing helps make edges of an image smoother (transition is more gradual), and visually reduces the stair-stepped pixels artifact.
Attachments
Convert attachments [+][-]
Default: Separate
Set how DocuFreezer handles file with attachments, e.g. PDF Portfolio or Outlook message files:
Option Effect Ignore Skip attachment(s) and convert only the main document Separate Save each attachment and the main document as separate files Combine (attachments after main doc) Convert the main document and append its attachment(s) after it Convert attachments only Skip the main document and process only attachment(s) Combine (attachments before main doc) Convert the main document and prepend its attachment(s) at the beginning
Sort attachments [+][-]
Default: Name
Select how file attachments should be sorted in the output folder:
- Unsorted
- Name
- Type
- Size
- Date
- Name descending
- Type descending
- Size descending
- Date descending
Include attachments by file mask [+][-]
Default: *.*
Use an expression that allows converting only certain attachments by mask. For example, type *.pdf to convert PDF attachments only. Or enter attachment.* to convert only files containing the word "attachment" in the filename.
Exclude attachments by file mask [+][-]
Default: none
Use an expression that restricts processing of certain attachments by mask. For example: *.docx
Document converting settings
Page range [+][-]
Default: All pages
Set page range – by selecting all pages or a specific page range. This setting duplicates the one in the Common Settings.
Skip repeated pages [+][-]
Default: No
This feature helps you avoid printing the same page more than once, for example, if you specified overlapping page ranges.
Save metadata [+][-]
Default: No
Save metadata from the source files such as EXIF, IPTC, XMP and keep it in the output files.
Convert engine(s) [+][-]
Default: none
Enter a name of a specific convert engine advised by our customer service.
OCR
OCR languages [+][-]
Default: English
Select the languages which should be used for OCR (Optical Character Recognition). For better results, select only those languages that are present in your source files.
Post processing
Successfully processed files [+][-]
Default: None
Select an action to be performed with successfully converted files:
- Copy to folder
- Move to folder
- Delete files
- None
Files that failed to process [+][-]
Default: None
Select an action to be performed with files that failed to convert for some reason:
- Copy to folder
- Move to folder
- Delete files
- None
Output formats
Output folder [+][-]
Default: C:\Users\[Username]\Documents
Set the output folder location for converted files. The output folder can also be selected on the main window.
Note: you can save converted files to the source folder - the same folder they come from. To use this feature, insert {*SrcFileFolder} next to Output folder:

Output format [+][-]
Default: PDF
Select the output file type. The format can also be selected on the main window.
Available output formats [+][-]
Default: PDF, TEXT, JPEG, TIFF, PNG
Configure the list of all available output file formats. Please note: file conversion to formats that are not set as default (XPS, DOCX, GIF) may not work correctly.
List of Files settings
Unique content in file list [+][-]
Default: Yes
Enable adding the same file to the List of files in order to convert it several times. By default, only unique content is enabled, so change it to No if you want to add the same file more than once.
Remove converted items from the list [+][-]
Default: Yes
Once all files are processed, a dialog window appears suggesting to remove all converted items. Change it to No if you want to keep the finished files in the List of files.
File loading settings
CAD
Worksheet name [+][-]
Default: *all*
Define which worksheets should be processed. You can set it to:
- *all* – convert all worksheets contained in a file
- *default* – convert the default (active) worksheet only
- My worksheet 1 – use an actual worksheet name to define which sheets to convert
Split worksheets [+][-]
Default: No
Check this option to split multi-sheet CAD drawings into worksheets. As a result, each worksheet will be saved as a separate file.
Skip model view [+][-]
Default: No
Skip model view of a CAD drawing. The "Model" tab will be ignored, but the contents of the "Layout" tab(s) will be converted.
Default line weight [+][-]
Default: -1
Change how the lines should look on a processed CAD drawing. You can make them thinner or thicker.
Paper size limit [+][-]
Default: A3
Set the maximum paper format (page size) for CAD drawings. You can select a Standard or Custom page size in millimeters, centimeters, or inches.
Try to use SHX fonts [+][-]
Default: Yes
Use SHX fonts if they are contained in your drawings. Consider adding them if the text is too thin or hard to read. Set a path to a folder with SHX fonts if you have it (see the next setting).
SHX font folders [+][-]
Default: none
Browse for folder(s) where SHX fonts are located so that DocuFreezer could use them.
Page margins [+][-]
Default: 0, 0, 0, 0
Specify custom page margins for CAD drawings, in points: left, right, top, and bottom margin.
E-mail message format
Page size [+][-]
Default: *all*
Set page size for email files, such as EML, MSG, OST, PST, P7M. You can select:
- Default – use the standard local paper size based on your computer's system locale; e.g., A4 in Europe and Letter in the U.S.;
- Standard – select a pre-defined format;
- Custom – set any width x height in millimeters, centimeters, or inches.
Excel
Split worksheets [+][-]
Default: No
Split multi-sheet spreadsheets and create a separate file from each sheet.
Hide main window [+][-]
Default: Yes
Hide the main window of Excel (or Excel alternative) during the file conversion process.
Export scale mode [+][-]
Default: Fit
Scale mode defines page sizing and scaling of Excel sheets. Available options:
- Fit – scales small pages up and shrinks large pages down to fit the output file page format (paper size of the default printer)
- As is – keeps the original size of Excel sheets
Worksheet names [+][-]
Default: *all*
Define which worksheets should be processed. You can set it to: *all* – convert all worksheets contained in a file
Keep headings [+][-]
Default: No
Enable or disable adding headings (row 1, 2, 3… and column numbers A, B, C…) to the output files.
Keep comments [+][-]
Default: At the end of sheet
Define how comments in Excel files should be processed: At the end of sheet, As displayed on sheet, Without comments.
HTML
Page size [+][-]
Default: Default
Set page size for HTML files. Available options:
- Default – use the standard local paper size based on your computer's system locale; e.g., A4 in Europe and Letter in the U.S.;
- Standard – select a pre-defined format;
- Custom – set any width x height in millimeters, centimeters, or inches.
Page margins [+][-]
Default: 0, 0, 0, 0
Specify custom page margins for HTML files, in points.
Zoom level [+][-]
Default: 0
Scale up or down the size of HTML pages, in percents.
Auto fit X [+][-]
Default: Shrink to fit
Set scaling by X-axis: None, Shink to fit, Scale to fit.
Auto fit Y [+][-]
Default: None
Set scaling by Y-axis: None, Shink to fit, Scale to fit.
Draw annotations [+][-]
Default: Yes
Keep annotations and pop-up comments in PDF files. By default, they are enabled.
Portfolio files pre-sorting [+][-]
Default: Unsorted
Enable sorting By index for PDF Portfolio attachments.
Text
Code page [+][-]
Default: Default
Select character encoding for plain text files, e.g., Unicode or ASCII.
Font [+][-]
Default: "Consolas" 11
Set font style and size.
Line spacing [+][-]
Default: 0.15
Define a custom spacing between lines of text, in points.
Paper size [+][-]
Default: A4
Select paper size (page format), e.g., A4 or Legal.
Page margins [+][-]
Default: 10, 8, 10, 8
Specify custom page margins for TXT files, in points: left, right, top, and bottom margin.
Word
Update fields [+][-]
Default: No
Automatically update dynamic fields in Microsoft Word files (e.g. [Date], [Time], [Name]). As a result, the up-to-date values of Microsoft Word's built-in dynamic fields will be displayed in the output documents after conversion.
Hide revisions [+][-]
Default: No
Do not show all the revisions that were made to a document while the Track Changes option was turned on. The changes remain part of a Word document until they are accepted or rejected.
Skip comments [+][-]
Default: No
Convert Word documents without comments if they were made inside a document.
Markup mode [+][-]
Default: As is
Select Markup mode and the type of revisions that should be kept:
- Balloon revisions
- Inline revisions
- Mixed revisions
- As is
Keep bookmarks [+][-]
Default: In-text bookmarks
Select which bookmarks should be kept (if they were present in a PDF document):
- In-text bookmarks
- Heading bookmarks
- Without bookmarks
ZPL
Dpmm [+][-]
Default: 8
Set ZPL files' density. We recommend choosing one of the following values:
- 6 dpmm (152 DPI);
- 8 dpmm (203 DPI);
- 12 dpmm (300 DPI);
- 24 dpmm (600 DPI).
Width [+][-]
Default: 4
Set width for ZPL files, in inches.
Height [+][-]
Default: 6
Set height for ZPL files, in inches.
Proxy host [+][-]
Default: none
Configure ZPL proxy host settings. You can change it to the needed value.
Proxy port [+][-]
Default: 0
Configure ZPL proxy port settings. You can change it to the needed value.
Log
Verbosity [+][-]
Default: Verbose
Select the type of log created by DocuFreezer: Verbose, Regular, and Laconic.
Create new logfile after [+][-]
Default: File size limit exceeds
Choose when a new log file should be created (and the old log replaced). You can select between File size limit exceeds and Every day.
File size limit [+][-]
Default: 16 MB
Set a limit on the size of a log file.
File history size [+][-]
Default: 8 files
Set the number of files that keep the log history.
Logfile folder [+][-]
Default: %TEMP%
Set path to a folder for log files. By default, it is C:\Users\[User]\AppData\Local\Temp
Interface
Show dialog on job completion [+][-]
Default: Yes
Open a dialog window indicating that all items from the List of files were successfully processed.
Interface language [+][-]
Default: English
Select user interface language.
If combined file already exists [+][-]
Default: Show appropriate dialog
Configure what DocuFreezer should do if there is a file with the same filename in the output folder:
- Show appropriate dialog Append to existing file Create new file
- Overwrite
On program start
Check for updates [+][-]
Default: Yes
Keep this option enabled to always have your DocuFreezer up-to-date.
Restore list of files from last session [+][-]
Default: No
Automatically load a previous List of files. This option is disabled by default.
On program exit
Show restore last session dialog [+][-]
Default: Yes
Show a dialog suggesting to load the current List of files again in the next DocuFreezer session.
File extension aliases
If you have files in supported format but with a non-standard file extension, DocuFreezer won't let you process these files. Still, there is a way to add and convert them. With the help of the File extension aliases tab, it is possible – just associate your files with an existing format. To do it:
- Check your file extension. For instance, if you have files like "Document.invoice", copy the extension "invoice";
- Go to File extension aliases and place a cursor next to the format you want to associate your files with;
- Add the file extension to the dropdown list.

Edit operations
You can add operations to be performed with your files during conversion via the Edit operations tab. Here you can make DocuFreezer perform an additional operation besides file conversion:
- Text watermark
- Image watermark
- Rotate
- Auto rotate
If you add two or more watermarks, you can control their vertical position by moving them up or down.
