PSD to G3 — Format Comparison & Online Converter
Fast, instant PSD to G3 (FAX) conversion. No signup required. Just drop your .psd file and get .g3 in seconds.
Batch Settings
Photoshopで丹念に作り上げたデザインを、ファックスや古いシステムでも扱えるG3形式へ変換する際、その品質を保ちつつ、いかにスムーズに移行させるかは多くのクリエイターやビジネスパーソンの共通の課題です。特に、緻密な表現が求められる漫画原稿や、縦書きを多用するビジネス文書など、日本のコンテンツ特有の細やかなニュアンスを損なうことなく、確実に伝達できる形式への変換は、時に専門的な知識を要します。当社の変換ツールは、そうしたPSDファイルの持つ豊かな表現力をG3形式へと的確に橋渡しし、互換性の壁を感じさせないソリューションを提供します。複雑な設定は不要で、直感的な操作で高品質な変換を実現。大切な作品や文書が、意図した通りに届けられるよう、私たちは技術の粋を集めました。
- 漫画原稿のファックス送信
- 伝統的な縦書き文書の共有
- 古いPC環境での画像表示
日本では、未だ多くの企業でG3ファックスがビジネスコミュニケーションの重要な手段として使われています。そのため、PSDで作成されたデザインや文書をG3形式に正確に変換するニーズは根強く存在します。
About PSD to G3 (FAX) Conversion
PSD (introduced 1990) and G3 are both image formats, but they differ in important ways. PSD is Adobe Photoshop's native format, retaining layers, masks, and editing history. G3 is a widely used file format.
When you convert PSD to G3, the goal is to convert between formats quickly. Converting PSD to G3 maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your PSD file is decoded and re-encoded as G3. The conversion involves 4 steps: (1) your psd file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in g3 format, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you When you need a G3 file. For the opposite direction, CocoConvert also supports G3 to PSD conversion.
How to Convert PSD to G3 (FAX)
- 1
Upload .psd file
Select your PSD file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .g3
Set G3 as the output format. The converter uses optimal settings based on the PSD→G3 conversion profile.
- 3
Convert
The server-side engine decodes your PSD file and re-encodes it as G3. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .g3 file. Multiple output files can be downloaded together.
What Happens When You Convert PSD to G3 (FAX)
Your PSD file is decoded and re-encoded as G3.
Your PSD file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in G3 format
The converted file is ready for download
Format Comparison
PSD
.psd file
| Extension | .psd |
| MIME Type | image/vnd.adobe.photoshop |
| Category | Image |
G3 (FAX)
.g3 file
| Extension | .g3 |
| MIME Type | image/g3fax |
| Category | Image |
Should You Convert PSD to G3 (FAX)?
When to Convert
- ✓When you need a G3 file
Frequently Asked Questions
What is the difference between PSD and G3?
PSD is Adobe Photoshop's native format, retaining layers, masks, and editing history. G3 is a widely used file format.
Does PSD to G3 conversion affect quality?
Converting PSD to G3 maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, PSD or G3?
PSD uses lossless compression. G3 is widely supported. The better choice depends on whether you prioritize file size or quality.
How long does PSD to G3 conversion take?
Most conversions finish in seconds. Larger files or complex image content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is PSD or G3 better for long-term storage?
PSD is better for archival since it's lossless.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.