What is a .PSB file?
PSB is Photoshop’s large-document format for huge images. Created and opened by Adobe Photoshop.
- Did you know
- PSB was added in Photoshop CS (2003) to handle files beyond 30,000 pixels or 2 GB.
- PSB stands for “Photoshop Big”, and it can store canvases up to 300,000 by 300,000 pixels and files of around four exabytes.
- What Analyser reads
- Identify Adobe project files and read their metadata: Photoshop (PSD, PSB), Illustrator (AI), InDesign (INDD), After Effects (AEP, AEPX, AET) with composition / layer / effect and asset extraction, Premiere Pro and Elements (PRPROJ, PREL) with sequence and media counts, XD, Animate (FLA), and Lightroom.
- Depth of analysis
- .PSB is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .PSB file
- Drag a .PSB file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.