🧾 发票生成器Invoice Generator
在线制作专业发票/形式发票：填写开票方、收票方和项目明细，自动计算小计、折扣、税和合计，支持多币种和中英文版式，可打印或另存为 PDF、下载 HTML。Create professional invoices online: enter your details, the client and line items, and subtotal, discount, tax and total are calculated automatically — multi-currency, Chinese or English layout, print/save as PDF or download HTML.
| 项目Description | 数量Qty | 单价Unit price | 金额Amount |
|---|
使用说明与常见问题How-to & FAQ
「发票生成器」是什么？What is the Invoice Generator tool?
在线制作专业发票/形式发票：填写开票方、收票方和项目明细，自动计算小计、折扣、税和合计，支持多币种和中英文版式，可打印或另存为 PDF、下载 HTML。Create professional invoices online: enter your details, the client and line items, and subtotal, discount, tax and total are calculated automatically — multi-currency, Chinese or English layout, print/save as PDF or download HTML.
如何使用「发票生成器」？How do I use the Invoice Generator tool?
在「发票生成器」中，按需设置「标题」、「发票编号」、「开票日期」、「付款期限」、「币种」等选项，然后点击「+ 添加项目」、「打印 / 保存为 PDF」、「下载 HTML」按钮即可。In the Invoice Generator: Set "Title", "Invoice no.", "Date", "Due date", "Currency", then click "+ Add item", "Print / Save as PDF", "Download HTML".
怎么保存为 PDF？How do I save it as PDF?
点击“打印 / 保存为 PDF”，在打印窗口的目标打印机中选择“另存为 PDF”即可；打印时只输出发票本身，不含页面上的表单和广告。Click "Print / Save as PDF" and choose "Save as PDF" as the printer; only the invoice itself is printed, not the form or the rest of the page.
税和合计怎么计算？How are tax and total calculated?
金额 = 数量 × 单价（四舍五入到分），小计为各项之和；税 = （小计 − 折扣）× 税率；合计 = 小计 − 折扣 + 税 + 运费。Amount = qty × unit price (rounded to cents); subtotal is their sum; tax = (subtotal − discount) × rate; total = subtotal − discount + tax + shipping.
这能当正式发票用吗？Is this an official tax invoice?
不能替代税务机关的发票。在中国大陆，增值税发票必须通过税务系统开具；本工具适合形式发票（Proforma）、报价单、海外客户账单或自由职业者收款单。It does not replace government-issued invoices. In mainland China, VAT fapiao must be issued through the tax system; this tool suits proforma invoices, quotes, bills for overseas clients and freelancer invoices.
填写的信息会上传吗？Is my information uploaded?
不会，发票在浏览器本地生成，刷新页面后内容会清空。No — the invoice is built locally in your browser and is cleared when you reload.
计算结果可以作为最终依据吗？Can I rely on the result?
「发票生成器」按标准公式计算，结果仅供参考；实际金额以银行、券商或税务机关的规则和四舍五入方式为准。The Invoice Generator uses standard formulas and is for estimation only; actual figures depend on your bank, broker or tax authority's rules and rounding.
「发票生成器」免费吗？需要注册吗？Is the Invoice Generator free? Do I need an account?
「发票生成器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Invoice Generator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.