PSB to JPG Converter
Convert PSB to JPG online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
How it works
Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is a PSB file?
PSB (Photoshop Big) is Adobe Photoshop's large-document format, created to overcome the 2GB file size and 30,000-pixel-per-side limits of the standard PSD format. PSB supports files up to 300,000 pixels per side and several times larger in file size, preserving the same layers, masks, channels, and editing data as PSD. It's used almost exclusively for very large, professional design or production files such as billboard art, film compositing, and high-resolution print work.
How to open a PSB file
PSB files open natively in Adobe Photoshop, which automatically switches to the PSB format once a document exceeds PSD's size limits. They can also be opened by other Adobe Creative Cloud applications and select third-party editors with PSB support, such as Affinity Photo, though broad cross-platform support is limited compared to PSD.
PSB Technical Info
- Full Name
- Photoshop Big Format
- Developed By
- Adobe
- Initial Release
- 2000
- MIME Type
- image/vnd.adobe.photoshop
What is a JPG file?
JPG is functionally identical to the JPEG format, differing only in the file extension length, a legacy constraint from the MS-DOS 8.3 filename limit (which allowed only three characters for extensions). It implements the same ISO/IEC 10918 standard, using lossy compression based on Discrete Cosine Transform (DCT) and Huffman coding to store photorealistic images. The file structure contains markers such as Start of Image (SOI) and End of Image (EOI) and supports color spaces like sRGB and CMYK, making it interchangeable with .jpeg files in all software contexts.
How to open a JPG file
As one of the most ubiquitous file types in computing, JPG files open natively on Windows, macOS, and Linux without external software. Default viewers like Microsoft Photos, Apple Preview, and Linux image viewers handle the format automatically. For editing or conversion, industry-standard tools including Adobe Photoshop, Paint.NET, and XnView provide extensive support. Web browsers universally render JPGs without plugins.
JPG Technical Info
- Full Name
- Joint Photographic Experts Group
- Developed By
- Joint Photographic Experts Group
- Initial Release
- 1992
- MIME Type
- image/jpeg
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Why RunConvert
The fastest way to convert any file
Purpose-built for speed, privacy, and breadth of format support.
Convert PSB to JPG in seconds
Every PSB to JPG conversion runs on our servers, so your device stays fast and the output quality stays intact.
Fast, cloud-powered
No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
Secure & private
Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
Free - no account needed
Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.
Developer API
Convert PSB to JPG via API
Automate PSB to JPG conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "psb-to-jpg",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "jpg"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.psb
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.