PDF 拼版计算

UpBox优盒工具箱，免费在线PDF拼版计算：选纸张与每张页数，算出每格尺寸、内容缩放比例、纸张利用率与需要几张纸，打讲义前先定好参数。

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纸张与排布Paper

纸张

每张放几页

页边距（mm）格间距（mm）

文档页数

已计算

讲义最常见的做法是 A4 上放 2 页或 4 页，再选双面打印；边距和格间距会直接吃掉可用面积，留太小打印机会裁掉边角，一般合计留 4 到 6 mm

每格尺寸Per cell

—

内容缩放—

纸张利用率—

需要纸张—

示意图只表示栏数与留白比例，不代表真实排版；A4 单页按 210 × 297 mm 计，指横向不旋转的竖版

本工具所有运算在本地浏览器完成，你的文件、文本不会上传到服务器

工具介绍

打讲义时把 32 页缩成 4 页一张，结果字小到看不清；问题往往不是缩放比例，而是边距和格间距先吃掉了一圈。 Printing 32 pages four-up often ends up unreadable, and the cause is usually the margin and gutter eating the area before the scale does.

这里把每格尺寸、内容缩放、纸张利用率一起算出来，先看清参数再决定要不要双面、要不要换纸。 This gives cell size, content scale and sheet usage together, so the decision on duplex or paper size happens before the print.

四种纸张Four papers
四种排布Four layouts
缩放与利用率Scale and usage
纸张数量Sheet count

使用说明

选纸张。Pick the paper.
选每张页数。Choose pages per sheet.
填边距与间距。Set margin and gutter.
看缩放与张数。Read scale and sheets.

常见问题

为什么缩放比例不是 50%？Why is the scale not simply 50%?

因为边距与间距先占掉一部分，剩下才是内容区；4 页一张在 A4 上通常落到 65% 到 70%。Because margin and gutter are taken first and only the rest holds content, so four-up on A4 usually lands around 65 to 70 percent.

双面打印要怎么算张数？How does duplex change the count?

张数按每张放几页算得，双面只是让一张纸的正反都印，纸张数减半。Sheets are counted by pages per sheet; duplex simply prints both sides of each sheet, halving the paper used.

缩放太小读不清怎么办？What if the scale is too small to read?

换更大的纸，或把每张页数降到 2 页；继续压边距不会救回可读性。Use larger paper or drop to two pages per sheet; shaving the margin further will not restore legibility.

能直接生成拼版 PDF 吗？Can it produce the imposed PDF?

不能，本页只给参数；实际拼版要用打印驱动的多页功能或专门的拼版工具。No, this page only gives the numbers; the actual imposition needs the printer driver or a dedicated tool.