PSB (.psb)
PSB (Photoshop Big) is Adobe's large document format supporting files over 30,000 x 30,000 pixels, up to 300,000 x 300,000 pixels.
Quick Facts
- File Extension
- .psb
- MIME Type
- image/vnd.adobe.photoshop
- Category
- Image
- Full Name
- PSB
What is PSB?
The PSB (Photoshop Big) file format is Adobe's specialized extension of the standard PSD format, designed specifically to handle massive digital documents that exceed the limitations of traditional image files. While standard PSD files are capped at 30,000 pixels in width or height, PSB files support dimensions up to 300,000 pixels, making them essential for high-resolution printing, large-scale digital billboards, and intricate compositing projects where detail is paramount.
This format preserves all the layering, adjustment, and masking capabilities found in standard Photoshop files but removes the size constraints that often hinder professional workflows. By utilizing the PSB extension, designers and artists can work on gigapixel images without needing to split their work into multiple smaller files, ensuring a seamless editing experience for projects requiring extreme fidelity and scale.
Despite its power, the PSB format is not universally supported by all image viewers or older software versions, often requiring the latest versions of Adobe Creative Cloud applications to open and edit correctly. However, for industries like architecture, advertising, and fine art photography, the ability to maintain a single, massive file with full editability makes PSB an indispensable tool in the modern digital production pipeline.
Technical Specifications
| Developer | Adobe Systems |
| First Released | 2003 |
| Type | Raster Image Format |
| Compression | RLE or ZIP (Lossless) |
| Max Resolution | 300,000 x 300,000 pixels |
| Color Depth | Up to 32 bits per channel |
Pros & Cons
+Advantages
- •Supports extremely large file sizes beyond standard PSD limits
- •Preserves all layers, masks, and adjustment settings
- •Ideal for high-resolution printing and gigapixel imagery
- •Compatible with modern Adobe Creative Cloud applications
−Disadvantages
- •Not supported by many third-party image viewers
- •File sizes can be prohibitively large for storage and transfer
- •Requires significant system RAM and processing power to edit
- •Limited compatibility with older versions of Photoshop
Common Use Cases
Large format advertising and billboard design
High-resolution architectural renderings
Gigapixel photography and panoramic stitching
Complex digital art composites requiring extreme detail
Convert from PSB
Convert .psb files to other formats.
Convert PSB (.psb) files to JPEG (.jpg) format. Transform your PSB files to JPG quickly and easily with File ConverterX — completely free.
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Convert PSB (.psb) files to DPX (.dpx) format. Transform your PSB files to DPX quickly and easily with File ConverterX — completely free.
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Convert PSB (.psb) files to PAM (.pam) format. Transform your PSB files to PAM quickly and easily with File ConverterX — completely free.
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Convert PSB (.psb) files to PICT (.pct) format. Transform your PSB files to PCT quickly and easily with File ConverterX — completely free.
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Convert PSB (.psb) files to PSD (.psd) format. Transform your PSB files to PSD quickly and easily with File ConverterX — completely free.
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Convert PSB (.psb) files to XPM (.xpm) format. Transform your PSB files to XPM quickly and easily with File ConverterX — completely free.
Convert to PSB
Convert other files to .psb format.
Convert JPEG (.jpg) files to PSB (.psb) format. Transform your JPG files to PSB quickly and easily with File ConverterX — completely free.
Convert PNG (.png) files to PSB (.psb) format. Transform your PNG files to PSB quickly and easily with File ConverterX — completely free.
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Convert PDF (.pdf) files to PSB (.psb) format. Transform your PDF files to PSB quickly and easily with File ConverterX — completely free.
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Convert MKV (.mkv) files to PSB (.psb) format. Transform your MKV files to PSB quickly and easily with File ConverterX — completely free.
Convert AVI (.avi) files to PSB (.psb) format. Transform your AVI files to PSB quickly and easily with File ConverterX — completely free.
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Convert EPS (.eps) files to PSB (.psb) format. Transform your EPS files to PSB quickly and easily with File ConverterX — completely free.
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Convert EMF (.emf) files to PSB (.psb) format. Transform your EMF files to PSB quickly and easily with File ConverterX — completely free.
Convert OpenEXR (.exr) files to PSB (.psb) format. Transform your EXR files to PSB quickly and easily with File ConverterX — completely free.
Convert FITS (.fits) files to PSB (.psb) format. Transform your FITS files to PSB quickly and easily with File ConverterX — completely free.
Convert FLIF (.flif) files to PSB (.psb) format. Transform your FLIF files to PSB quickly and easily with File ConverterX — completely free.
Convert FLV (.flv) files to PSB (.psb) format. Transform your FLV files to PSB quickly and easily with File ConverterX — completely free.
Convert HDR (.hdr) files to PSB (.psb) format. Transform your HDR files to PSB quickly and easily with File ConverterX — completely free.
Convert HEIF (.heif) files to PSB (.psb) format. Transform your HEIF files to PSB quickly and easily with File ConverterX — completely free.
Convert JPEG 2000 (.j2k) files to PSB (.psb) format. Transform your J2K files to PSB quickly and easily with File ConverterX — completely free.
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Convert MPEG (.mpeg) files to PSB (.psb) format. Transform your MPEG files to PSB quickly and easily with File ConverterX — completely free.
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Convert PAM (.pam) files to PSB (.psb) format. Transform your PAM files to PSB quickly and easily with File ConverterX — completely free.
Convert PBM (.pbm) files to PSB (.psb) format. Transform your PBM files to PSB quickly and easily with File ConverterX — completely free.
Convert PICT (.pct) files to PSB (.psb) format. Transform your PCT files to PSB quickly and easily with File ConverterX — completely free.
Convert PCX (.pcx) files to PSB (.psb) format. Transform your PCX files to PSB quickly and easily with File ConverterX — completely free.
Convert PDB (.pdb) files to PSB (.psb) format. Transform your PDB files to PSB quickly and easily with File ConverterX — completely free.
Convert Pentax RAW (.pef) files to PSB (.psb) format. Transform your PEF files to PSB quickly and easily with File ConverterX — completely free.
Convert PGM (.pgm) files to PSB (.psb) format. Transform your PGM files to PSB quickly and easily with File ConverterX — completely free.
Convert PNM (.pnm) files to PSB (.psb) format. Transform your PNM files to PSB quickly and easily with File ConverterX — completely free.
Convert PPM (.ppm) files to PSB (.psb) format. Transform your PPM files to PSB quickly and easily with File ConverterX — completely free.
Convert PostScript (.ps) files to PSB (.psb) format. Transform your PS files to PSB quickly and easily with File ConverterX — completely free.
Convert PSD (.psd) files to PSB (.psb) format. Transform your PSD files to PSB quickly and easily with File ConverterX — completely free.
Convert QOI (.qoi) files to PSB (.psb) format. Transform your QOI files to PSB quickly and easily with File ConverterX — completely free.
Convert Fuji RAW (.raf) files to PSB (.psb) format. Transform your RAF files to PSB quickly and easily with File ConverterX — completely free.
Convert RAW (.raw) files to PSB (.psb) format. Transform your RAW files to PSB quickly and easily with File ConverterX — completely free.
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Convert SVGZ (.svgz) files to PSB (.psb) format. Transform your SVGZ files to PSB quickly and easily with File ConverterX — completely free.
Convert TGA (.tga) files to PSB (.psb) format. Transform your TGA files to PSB quickly and easily with File ConverterX — completely free.
Convert WBMP (.wbmp) files to PSB (.psb) format. Transform your WBMP files to PSB quickly and easily with File ConverterX — completely free.
Convert WMF (.wmf) files to PSB (.psb) format. Transform your WMF files to PSB quickly and easily with File ConverterX — completely free.
Convert XBM (.xbm) files to PSB (.psb) format. Transform your XBM files to PSB quickly and easily with File ConverterX — completely free.
Convert XCF (.xcf) files to PSB (.psb) format. Transform your XCF files to PSB quickly and easily with File ConverterX — completely free.
Convert XPM (.xpm) files to PSB (.psb) format. Transform your XPM files to PSB quickly and easily with File ConverterX — completely free.
Frequently Asked Questions
The primary difference is the maximum dimension; PSD files are limited to 30,000 pixels, while PSB files support up to 300,000 pixels in width or height.
Need to convert PSB files?
File ConverterX supports converting .psb files to and from dozens of formats — completely free.
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