PDFサイズ統一
異なる用紙サイズ（A3、A4、B5等）が混在するPDFを、アスペクト比を維持してA4などの均一サイズに自動縮小・拡大・配置します。
ファイルをここにドラッグ＆ドロップするか、クリックして選択してください
or
さまざまなページサイズ（A3、レター、カスタム請求書など）を、統一されたターゲットレイアウトシートの寸法にスケーリングして中央揃えします。
Designed for Trust and Speed
PDFRunway handles your documents locally, keeping data secure and processing lightning-fast.
Easy to Use
Simple 3-step processes designed for speed, clarity, and non-technical users.
Fast & Reliable
High-performance local compilation keeps processing fast, secure, and responsive.
100% Secure
Your documents never leave your browser. Zero uploads, 100% client-side privacy.
Works Anywhere
Access the full suite on any browser, system, desktop, or mobile device.
使用方法
Follow these three simple steps to process your file in seconds.
Provide mixed-size PDF
Upload a merged PDF document containing mismatched, messy page sizes.
Choose target preset
Select the target uniform size (e.g. A4, Letter, A3) and toggle scale modes.
Align and download
Click execute to trigger 3D sheet alignment, downloading a beautifully standardized PDF.
このツールについて
The Multi-Format PDF Resizer is the ultimate standardizer for cluttered, mismatched corporate documents.
Combining invoices, contracts, and supplementary charts often results in a PDF containing massive A3 ledger pages, standard A4 agreements, and Letter-sized envelopes. Flipping through them is highly distracting, and sending them to physical office printers often causes jam errors due to size mismatch.
This tool rewrites the low-level /MediaBox and /CropBox grids on each page. It maps existing widths and heights, scales original pages proportionally to match target presets (e.g. standard A4), and introduces elegant, consistent surrounding margins, making the entire file look incredibly polished.
使用例
Corporate RFP Proposals
Standardize scanned qualification certificates and A4 bidding sheets before physical printing.
Financial Chart Integration
Scale broad A3 financial cash flows into neat A4 pages, preserving printing standards.
Book Margin Standardization
Force slightly varied scanned book pages into an absolutely uniform dimension for comfortable reading.
よくある質問
Have questions? Find quick answers about this tool here.
Never. We support both "Contain" (proportional scaling with white bars) and "Cover" (centered crop). The default Contain mode preserves aspect ratios, preventing distortion.
Yes. The algorithm maps the scaling factors to the Annotation coordinate arrays, scaling link boxes, sign boundaries, and inputs to align perfectly after resizing.
No. Since all operations run locally in your client sandbox using native JavaScript, you can process extensive PDFs containing hundreds of pages in seconds.