TUB Converter

Convert PaintShop Pro Picture Tube files (TUB) online for free

Select File
Drop or upload your .TUB file

Online File Converter

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How to convert your TUB file

Click the "Select File" button above, and choose your TUB file.
You'll see a preview.
Click the "Convert file to..." button to save your file in the format you want.

Convert TUB to another file type

The converter easily converts your TUB Picture Tube files to various formats - free and online. No PaintShop Pro or or other Raster Image software needed.

TUB to JPE
TUB to RPBM
TUB to RLB
TUB to 92I
TUB to JIF
TUB to NOL
TUB to QTL
TUB to PI4
TUB to PIX
TUB to PC3
TUB to PPM
TUB to RPNM

Convert a file to TUB

To convert other file formats to the "Graphics Brush Preset" file type, you need software like PaintShop Pro or a similar tool.

About TUB files

The .TUB file extension is primarily associated with Paint Shop Pro Picture Tubes, a legacy graphics format originally developed by Jasc Software and now maintained by Corel. These files function as advanced image brushes, allowing users to "spray" a sequence of raster images (like butterflies, leaves, or geometric shapes) onto a canvas rather than a single color. Internally, a .TUB file acts as a container holding a grid of cells, where each cell contains a distinct graphical object with transparency.

The catch for users is that .TUB is a proprietary, application-specific format. It cannot be opened or viewed in standard image viewers like Microsoft Photos, Preview, or web browsers. Furthermore, modern creative workflows often require assets to be compatible with Adobe Photoshop, Illustrator, or Procreate, none of which natively support the .TUB format. This "lock-in" makes it difficult to migrate legacy design assets to new projects.

Conversion Best Practices:

For Editing/Design: Convert the .TUB file to PNG (Portable Network Graphics). This is the ideal target because it preserves the transparency (alpha channel) of the tube objects, allowing you to extract the individual graphics and use them as stamps or brushes in other software.
For Archiving: Convert to PDF if you simply need a visual catalog of what the tube file contains without needing to edit the layers.

*Note: A secondary, less common use (approx. 14%) of the .TUB extension is for project files created by TubeCAD, a niche engineering software used for designing vacuum tube audio amplifiers. These are data files, not images, and require the specific legacy TubeCAD software to interpret.*

Use Convert.Guru to open and convert your TUB file.

Users also converted JBR, SEL and PSPGRADIENT files.

FAQ

If you want to convert TUB file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use PaintShop Pro or similar software from the "Raster Graphics Container" category. In the File menu, look for Save As… or Export….

To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to TUB, try PaintShop Pro or another comparable tool in the "Raster Graphics Container" category.

The TUB Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our TUB converter.