How to Convert PSB to PSD — Quick & Free
Fast, instant PSB to PSD conversion. No signup required. Just drop your .psb file and get .psd in seconds.
Batch Settings
Photoshopで大規模なアートワークやデザインプロジェクトを手掛ける際、PSB（Photoshop Big）形式はその広大なキャンバスサイズとレイヤー保持能力で重宝されます。しかし、共同作業者とのファイル共有、特定の古いソフトウェアとの互換性、あるいはウェブへのアップロードを考えると、より一般的なPSD形式への変換が必要となる場面が少なくありません。特に、日本のデザイン業界では、印刷所への入稿規定や、クライアントとのスムーズなやり取りのために、ファイル形式の標準化が求められることが多々あります。このページでは、大切なデザイン資産を品質を損なうことなく、PSBからPSDへと変換する方法を、分かりやすく解説します。ファイルサイズの最適化を図りつつ、レイヤー構造や編集可能性を維持したまま、効率的に作業を進めるための一助となれば幸いです。
- 漫画・アニメ制作データの共有
- ビジネス文書のDTP入稿
- 縦書きデザインの互換性確保
日本の印刷業界では、データ入稿時のファイルサイズや形式に厳格なルールがある場合が多く、PSBからPSDへの変換は互換性確保の観点から特に重要視されます。また、縦書き組版の際に使用される特殊フォントの埋め込み状況も確認しておくと安心です。
About PSB to PSD Conversion
Short answer: yes, you can convert PSB to PSD online for free, and quality is well preserved with the right settings. Just upload your .psb file to CocoConvert, pick PSD as the output, and click Convert. The whole process takes seconds.
Now for the details. PSB is a widely used file format. PSD is Adobe Photoshop's native format, retaining layers, masks, and editing history. Converting between these two formats lets you convert between formats quickly.
Your PSB file is decoded and re-encoded as PSD. Converting PSB to PSD maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert PSB to PSD
- 1
1. Upload PSB
Drop your .psb file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select PSD
Choose .psd from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .psd file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert PSB to PSD
Your PSB file is decoded and re-encoded as PSD.
Your PSB file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in PSD format
The converted file is ready for download
Format Comparison
PSB
.psb file
| Extension | .psb |
| MIME Type | image/vnd.adobe.photoshop |
| Category | Image |
PSD
.psd file
| Extension | .psd |
| MIME Type | image/vnd.adobe.photoshop |
| Category | Image |
Should You Convert PSB to PSD?
When to Convert
- ✓When you need a PSD file
Frequently Asked Questions
Is PSB to PSD conversion free?
Yes. CocoConvert offers free PSB to PSD conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is PSB to PSD conversion?
Most files convert in 2–10 seconds depending on size. Large image files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded PSB file and the converted PSD file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting PSB to PSD lose quality?
Converting PSB to PSD maintains high quality with CocoConvert's optimised encoder settings.
Can I convert PSD back to PSB?
Yes, CocoConvert supports PSD to PSB conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.