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
Photoshopの大型ファイル形式であるPSBを、ビジネス文書や技術図面で広く使われるCAL形式へ変換する必要はありませんか？ 「Photoshop Big」（PSB）ファイルは、その名の通り、巨大な画像データを扱う際に真価を発揮します。しかし、印刷会社への入稿や、特定のCADソフトウェアでの利用、あるいは一般的なビジネス環境での共有となると、汎用性の高いCAL形式への変換が求められることが少なくありません。特に、緻密なグラフィックデザインやイラストレーションを手がけるクリエイターの方々にとって、この変換は作業フローの効率化に直結します。 当社のオンラインツールは、複雑な設定なしに、PSBファイルをCAL形式へとスムーズに変換します。大切なデザイン資産を、必要な形式で、必要な場所へ。もうファイル形式の壁に悩まされることはありません。あなたのクリエイティブな活動を、強力にサポートいたします。
- 漫画・イラスト制作物の印刷所入稿
- 大規模建築図面のCAD連携
- ビジネスレポートでの画像共有
日本では、特に漫画やアニメの制作現場でPSBが多用される一方で、ビジネスや行政文書ではCALのようなベクトル形式が好まれる傾向にあり、両者の相互変換の需要が存在します。
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.