Click the "Select File" button above, and choose your J file.
You'll see a preview.
Click the "Convert file to..." button to save your file in the format you want.
Convert J to another file type
The converter easily converts your J images to various formats - free and online. No Adobe Photoshop or or other Raster Image software needed.
J to SI
J to VIFF
J to SUN
J to FPX
J to MTV
J to QRT
J to DOTX
J to BMP565
J to 83I
J to RPGM
J to XPM
J to WEBP
Convert a file to J
The converter also works in reverse, so you can convert other "Compressed Bitmap Image" formats to J without using software like Adobe Photoshop or a similar tool.
PFA to J
CR2 to J
TJP to J
FLC to J
CUBE to J
LIF to J
WRL to J
J2C to J
GRO to J
MGR to J
UYVY to J
PXS to J
About J files
A .j file is predominantly a truncated JPG image file. However, the extension is heavily overloaded and can also represent Unity game asset bundles, temporary files from JDownloader, or JASS (Jian's Another Scripting System) scripts for Warcraft III. You can often open image-based .j files by simply renaming them to jpg and opening them in any standard viewer, or by using Adobe Photoshop. The main disadvantage of the .j extension is operating system confusion. Windows and macOS rely on extensions to associate files with programs. Because .j is non-standard, double-clicking it usually triggers an annoying 'Open With' prompt. Furthermore, if it is a proprietary Unity asset bundle, the data is highly compressed and unreadable without specialized reverse-engineering tools. For web use, convert image-based .j files to WebP. For archiving or sharing, convert to PDF or standard PNG. Just drag and drop your file here to analyze and convert it securely right in your browser.
If you want to convert J file to EV, CAL, MJ, W, ZIP, RAR, 7Z, TAR, GZ, BZ2, XZ or LZMA, you can use Adobe Photoshop or similar software from the "Image Storage or Asset Bundle" category. In the File menu, look for Save As… or Export….
To convert XXE, 7Z, Z, PAK, LHA, DEB, UUE, TAR, LZH, ZIP, PKG or RAR files to J, try Adobe Photoshop or another comparable tool in the "Image Storage or Asset Bundle" category.
The J 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 J converter.