Convert Bi-level images (JBIG) online for free
The converter easily converts your JBIG images to various formats - free and online. No XnView or or other Raster Image software needed.
The converter also works in reverse, so you can convert other "Monochrome Bitmap" formats to JBIG without using software like XnView or a similar tool.
JBIG files are lossless bi-level images created using the compression standard developed by the Joint Bi-level Image Group. Unlike standard photos, these files are strictly monochrome (1-bit color depth), making them highly efficient for storing scanned text documents, technical drawings, and fax transmissions. While the compression algorithm is superior to older standards like CCITT Group 4, the format itself is notoriously difficult to handle in a modern workflow.
The main drawback with .jbig files is the lack of native support. Neither Windows Photo Viewer, macOS Preview, nor standard web browsers (Chrome, Edge) can display them. Users often encounter these files as detached attachments from legacy fax systems or database exports, only to find they cannot view the content without installing specialized utility software like XnView MP or IrfanView (which often requires additional plugins). Furthermore, because JBIG is often treated as a raw bitstream rather than a self-contained file format with a header, some viewers may fail to render the dimensions correctly.
To make these files usable, conversion is practically mandatory. For document archiving and sharing, converting to PDF is the standard best practice, as it preserves the crisp edges of the text without the compatibility headaches. If you need to edit the graphic in software like Adobe Photoshop, converting to PNG or TIFF is recommended to maintain lossless quality. Use convert.guru to instantly transform these legacy streams into accessible documents or images.
Use Convert.Guru to open and convert your JBIG file.
Users also converted JBIG2, JPC, JB2 and MIIA files.
If you want to convert JBIG file to ICO or CUR, you can use XnView or similar software from the "Bi-level Image Compression" category. In the File menu, look for Save As… or Export….
To convert RAW or AI files to JBIG, try XnView or another comparable tool in the "Bi-level Image Compression" category.
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 JBIG converter.