調整 PDF 大小
將每一頁調整成符合 A4、Letter 或 Legal 紙張大小。
運作方式
上傳您的 PDF，選擇 A4、Letter 或 Legal，然後下載結果——每一頁都會等比例縮放並置中，不會變形。
調整大小會使內容變形嗎？
不會——頁面會按比例縮放以符合新的紙張大小，再置中排列，因此內容不會被拉伸變形。如果原始長寬比不完全相符，可能會出現多餘的邊界。
我可以調整成自訂大小，而不只是 A4/Letter/Legal 嗎？
目前不支援——此工具涵蓋三種最常見的標準紙張大小。
Will resizing crop any content off the page?
No — pages are scaled down or up to fit within the new size, not cropped, so all original content stays visible.
Can different pages in my PDF end up different target sizes?
No — one target size applies to every page in the output file.
Does resizing affect image or text quality?
Content is scaled proportionally as vector/raster data, not re-rendered at low resolution, so quality holds up well at normal size changes.
Can resizing make small pages bigger, not just shrink them?
Yes — if your PDF's pages are smaller than the size you pick, they scale up to fill it, the same as oversized pages scale down. Enlarge a page a lot and any embedded images can look a bit softer, since the same pixels now cover more paper, but nothing gets stretched or distorted.