PSB Won't Open? Convert to CAL Instantly
Fast, instant PSB to CAL (CALS) conversion. No signup required. Just drop your .psb file and get .cal in seconds.
Batch Settings
La conversion de fichiers est une étape courante dans le flux de travail numérique, et le passage du format PSB (Photoshop Big) au CAL (CALS Raster) répond à des besoins spécifiques de compatibilité et d'archivage. Alors que le PSB est plébiscité pour sa capacité à gérer des images de très grande taille avec de multiples calques, idéal pour les créations graphiques complexes, le CAL s'impose comme un standard robuste pour la documentation technique et l'échange de données raster dans des environnements réglementés. Cette transition, loin d'être anodine, garantit l'intégrité visuelle de vos données tout en les adaptant à des systèmes souvent plus anciens ou à des exigences d'interopérabilité strictes. Notre outil a été conçu pour faciliter cette migration technique, assurant une fidélité des couleurs et une précision des détails, essentielles pour la bonne exploitation de vos fichiers convertis. Que ce soit pour l'archivage légal ou la collaboration inter-plateformes, nous vous accompagnons dans cette démarche technique.
- Archivage de plans cadastraux
- Publications scientifiques illustrées
- Soumissions techniques réglementées
Au Québec et en France, le format CAL est souvent requis pour les soumissions de documents techniques aux organismes gouvernementaux, notamment dans les secteurs de l'ingénierie et de la défense, où la pérennité et la standardisation des formats sont primordiales.
About PSB to CAL (CALS) Conversion
Dealing with a PSB file that won't open on your device? You're not alone — PSB compatibility issues are one of the most common reasons people search for a file converter. PSB is a widely used file format.
The fix is simple: convert your PSB to CAL. CAL is a widely used file format. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Converting PSB to CAL maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your PSB file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you When you need a CAL file.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert PSB to CAL (CALS)
- 1
Add your PSB file
Drag and drop your .psb file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick CAL output
Select .cal as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The image engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .cal file. For batch jobs, download all at once as a zip.
What Happens When You Convert PSB to CAL (CALS)
Your PSB file is decoded and re-encoded as CAL.
Your PSB file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in CAL format
The converted file is ready for download
Format Comparison
PSB
.psb file
| Extension | .psb |
| MIME Type | image/vnd.adobe.photoshop |
| Category | Image |
CAL (CALS)
.cal file
| Extension | .cal |
| MIME Type | image/x-cals |
| Category | Image |
Should You Convert PSB to CAL (CALS)?
When to Convert
- ✓When you need a CAL file
Frequently Asked Questions
Why won't my PSB file open?
PSB files may not open if your device lacks the right codec or application. Converting to CAL — a more widely supported format — usually resolves this. CAL is a widely used file format.
Is it safe to convert PSB to CAL online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting PSB to CAL?
Converting PSB to CAL maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my PSB file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert PSB to CAL on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.