PDF圧縮

Ghostscriptを活用し、画質を維持しながらPDFのファイルサイズを軽量化します。印刷対応300dpi低圧縮モードと高圧縮モードを選んで圧縮。

圧縮モードの選択

低圧縮モード（画質優先 / 10MB目安）
高圧縮モード（容量削減優先 / ぐんと圧縮）

PDFファイルをドラッグ＆ドロップ、または選択してください。

High-Precision Server-Side Compression via Ghostscript

Optimizes vector features and embedded raster graphics within the PDF using a dedicated server-side Ghostscript engine. Offers two tailored algorithmic presets: "High Compression Mode" built for maximum storage reduction on screens, and "Low Compression Mode" capped at 300dpi to preserve high-fidelity print quality.

Technical Pipeline

Securely transfers the target PDF to an isolated server workspace using asynchronous Fetch API requests.
Ghostscript executes downsampling and font re-embedding based on the selected target mode (printer or screen).
Calculates the precise optimization delta (oldSize vs. newSize) and projects the results on the user interface.
Upon verifying the 2-point consumption via API, provisions a session-validated, secure download stream for the optimized PDF.

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PDF圧縮

High-Precision Server-Side Compression via Ghostscript

Technical Pipeline

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🛠️ IVYWE企画開発のPortalサイトとおすすめサービス