Convert PNG to EPS: Free Online Converter
Convert Portable Network Graphics to Encapsulated PostScript online for free. Fast, secure image conversion with no watermarks or registration.
PNGに対応
アップロードすることで、これらのファイルの権利を有していること、および利用規約に同意することを確認したものとみなされます。
変換設定: ファイルを追加すると調整できます
安全な転送
HTTPS暗号化アップロード
プライバシー優先
ゲストのファイルは約2時間で自動削除
登録不要
すぐに変換を開始
どこでも動作
あらゆるブラウザ、あらゆるデバイス
PNG から EPS への設定
- エンジン
- 画像
- 設定
- 調整できる設定: 5
- Width (px)
- Height (px)
- Resize Mode
- Rotate upright
- Strip Metadata
変換方法
アップロードエリアにドラッグするか、クリックして選択し、.pngファイルをアップロードしてください。
必要に応じて出力設定を調整してください。デフォルト設定ではオリジナルの品質を維持します。
「変換」をクリックし、準備ができたら.epsファイルをダウンロードしてください。
PNGからEPSへの変換について
EPS (Encapsulated PostScript) is a graphics file format used extensively in professional print production, prepress workflows, and legacy desktop publishing applications. Converting PNG to EPS wraps your raster image data in a PostScript program with a defined bounding box, making it importable into Adobe InDesign, QuarkXPress, Illustrator, and LaTeX document systems that expect EPS graphics.
While EPS was originally designed for vector content, it fully supports embedded raster images. The PNG pixel data is encoded within the PostScript program, typically using ASCII85 or hexadecimal encoding. The result is a self-contained graphic that professional print workflows can handle alongside vector elements, spot colors, and other prepress-specific features.
PNGをEPSに変換する理由
Commercial print production workflows, particularly those using older RIP (Raster Image Processor) systems, may require EPS format for all placed graphics. When a PNG image — a logo, product photo, or illustration — needs to be included in a print-ready layout, the print shop may specify EPS as the required delivery format. EPS carries device-independent page descriptions that RIP hardware interprets directly.
LaTeX document preparation using the classic dvips workflow requires EPS for included graphics. Academic papers, mathematical documents, and technical reports prepared in LaTeX with DVI output cannot include PNG directly — the image must be wrapped in EPS with a proper BoundingBox declaration. Modern pdfLaTeX can handle PNG natively, but many academic institutions still use the traditional dvips pipeline.
主な活用例
- Prepare PNG images for commercial print production workflows requiring EPS input
- Include PNG graphics in LaTeX documents compiled through the dvips pipeline
- Deliver PNG-based assets to print shops that require EPS format for prepress
- Create EPS versions of PNG logos for inclusion in legacy InDesign or QuarkXPress layouts
- Generate device-independent graphics from PNG for industrial label printing systems
仕組み
The conversion uses a PDF rendering engine to encode the PNG's pixel data within an EPS (PostScript Level 2) wrapper. The image is encoded using ASCII85 for reasonable file size while maintaining text-based format compatibility. DSC (Document Structuring Conventions) comments include %%BoundingBox with the image dimensions in PostScript points (1/72 inch). The EPS conforms to version 3.0 of the EPSF specification. A TIFF preview bitmap may be included for applications that display EPS thumbnails.
品質とパフォーマンス
The raster data in the EPS is a faithful representation of the PNG's pixels. No lossy compression is applied during the conversion. However, PNG's alpha transparency is flattened since standard EPS does not support alpha channels in raster images. The final output quality depends on the RIP or application interpreting the EPS — high-resolution PNGs produce high-quality print output, while low-resolution web PNGs will appear pixelated at print sizes.
デバイス互換性
| Device | PNG | EPS |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Native | Partial |
| Linux | Partial | Partial |
| Web Browser | Native | No |
最良の結果を得るためのヒント
- 1Use high-resolution PNGs (300+ DPI) for EPS files destined for commercial print
- 2For LaTeX, verify the %%BoundingBox in the EPS matches your expected graphic dimensions
- 3EPS is text-based — you can inspect and adjust PostScript coordinates in a text editor
- 4Consider PDF as a modern alternative to EPS for print workflows that support it
- 5For web graphics, EPS is unnecessary — keep the original PNG format instead
関連する変換
PNG to EPS conversion serves professional print and academic typesetting workflows that require the Encapsulated PostScript format. The output preserves PNG's image quality while wrapping it in a format that prepress systems, commercial printers, and LaTeX toolchains expect.
PNGとEPSの比較
| 特徴 | PNG | EPS |
|---|---|---|
| 正式名称 | Portable Network Graphics | Encapsulated PostScript |
| 拡張子 | .png | .eps |