调整PDF大小
将页面尺寸更改为A4、Letter或自定义
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如何调整PDF页面大小
上传PDF
选择或将您的PDF文件拖放到上传区域。
选择尺寸
选择目标页面尺寸（A4、Letter或自定义尺寸）。
下载
下载调整大小后的PDF文件。
Why Resize PDF Pages?
Different regions use different paper sizes. Resizing ensures your documents print correctly whether you're working with A4 (international) or Letter (US) paper.
Common Size Conversions
- A4 to Letter: Prepare international documents for US printing.
- Letter to A4: Prepare US documents for international use.
- A3 to A4: Scale large format documents to standard size.
- Custom Sizes: Prepare documents for specific requirements.
Scaling Modes Explained
Fit: Content scales to fit within new dimensions (may add margins). Fill: Content fills entire page (may crop edges). Stretch: Content distorts to exactly match new dimensions.
常见问题
What page sizes are available?
Choose from standard sizes like A4, Letter, Legal, A3, A5, Tabloid, or enter custom dimensions in millimeters or inches.
Will resizing affect my content quality?
Vector content (text, shapes) scales perfectly at any size. Images scale proportionally with 'Fit' mode preserving quality.
Can I change page orientation?
Yes, you can force portrait or landscape orientation, or keep the original orientation of each page.
What's the difference between Fit and Fill modes?
Fit scales content to fit entirely within the new size (may add margins). Fill scales to cover the entire page (may crop edges). Stretch distorts to exactly fill.
Is resizing PDFs free?
Yes, our PDF resize tool is completely free with no registration, watermarks, or hidden fees.
How do I convert A4 to Letter size?
Upload your A4 PDF, select "Letter" as the target size, choose "Fit" mode to prevent cropping, and download. Content will scale slightly to fit.
Can I resize specific pages only?
Currently all pages are resized to the same dimensions. For mixed page sizes, process pages separately and merge them.
Why resize a PDF?
Common reasons include standardizing page sizes for printing, converting between international and US paper sizes, or preparing documents for specific submission requirements.
Will links and form fields still work?
Yes, interactive elements like links, bookmarks, and form fields are preserved and repositioned correctly after resizing.
What's the difference between resize and crop?
Resize changes the page dimensions and scales content. Crop removes content from edges without scaling. Use resize for page size changes, crop for margin adjustment.