背景PDF

背景は面付けコンテンツの背後に全面ブリード背景（テクスチャ、ベタ塗り、繰り返しパターン）を配置します。PDFまたは画像ファイルを背景としてアップロードします。各ソースページを個別に編集するより高速です。

Best for:背景画像テクスチャベタ塗り繰り返しパターン
Open 背景PDFTool page
背景PDF — 既存のページ内容の背後にPDFを配置します。

背景PDF

Tool page

既存のページ内容の背後にPDFを配置します。

背景は面付けコンテンツの背後に全面ブリード背景（テクスチャ、ベタ塗り、繰り返しパターン）を配置します。PDFまたは画像ファイルを背景としてアップロードします。各ソースページを個別に編集するより高速です。

Best for:背景画像テクスチャベタ塗り繰り返しパターン
How It Works

背景は面付けコンテンツの背後に全面ブリード背景（テクスチャ、ベタ塗り、繰り返しパターン）を配置します。PDFまたは画像ファイルを背景としてアップロードします。各ソースページを個別に編集するより高速です。

Offset X (pt):Horizontal shift of the backdrop in PDF points. Positive moves right, negative moves left. Use this to fine-tune alignment when the backdrop doesn't match page dimensions exactly.
Offset Y (pt):Vertical shift of the backdrop in PDF points. Positive moves down, negative moves up.
Scale (%):Resize the backdrop relative to its original dimensions. 100% = native size. Values above 100% enlarge; below 100% shrink. Useful when your template was designed at a different size than the target pages.
Opacity (%):Transparency of the backdrop layer. 100% = fully opaque (completely covers white paper). Lower values create a semi-transparent background effect:30–50% works well for subtle watermark-style backgrounds.
Backdrop in PDF Press imposition software — options panel beside the live imposed sheet

背景PDF tool applied. Options panel on the left, imposed result on the right. Click to zoom.

Options Guide
Backdrop File

Upload the PDF to be placed behind page content.

Upload a single-page PDF containing your background artwork. If the backdrop is multi-page, page 1 is used. For best results, the backdrop should match or exceed the target page dimensions. If "Repeat" is enabled, the same backdrop appears on every page in the range; otherwise it appears only on page 1.

Settings

Control placement, size, and transparency of the backdrop layer.

Repeat: applies the backdrop to all pages in the range (ideal for stationery). Offset X/Y: shifts the backdrop from its default position in PDF points (1pt = 1/72in). Scale: enlarges or reduces the backdrop relative to its native size:100% = original. Opacity: controls transparency:100% is fully opaque, lower values let the page content show through the backdrop.

Pages

Specify which pages to process using a range expression.

Examples: 'all' = every page. '1-5' = pages 1 through 5. '1,3,5' = specific pages. '1-10 odd' = odd pages 1-9. '2-20 even' = even pages 2-20. 'last' = last page. 'last-2' = third from last. Ranges are 1-based. Combine with commas: '1-5, 8, 12-15'.

Configurations & Variations
Backdrop Applied

Click the file upload area in the Backdrop section to load a background PDF or image. The backdrop is placed behind your imposed content on every output page. Common uses: textured paper simulation, branded background, or a pre-printed shell layout. Set opacity to 100% for production shells and 10-20% for subtle textures. The backdrop file must match or exceed the output sheet dimensions; undersized backdrops leave white edges.

Backdrop settings panel in PDF Press imposition software (Backdrop Applied configuration)

Settings to change

Backdrop in PDF Press imposition software (Backdrop Applied configuration) — options panel beside the live imposed sheet

Full app view

Imposed Backdrop result preview in PDF Press imposition software (Backdrop Applied configuration)

Output result

Expert Tip

Backdrop places a full-bleed background (texture, solid fill, or repeating pattern) behind your imposed content. Upload a PDF or image file as the backdrop. Faster than editing every source page individually when you need a uniform background across the job.

A backdrop with transparency or live effects can dramatically increase RIP time. Flatten the backdrop PDF first if your RIP is struggling.

Try 背景PDF in your browser

PDF Press runs entirely client-side. Upload a PDF, apply 背景PDF, and download the result — no upload to a server, no sign-up required.

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