免费发票生成器
几秒内生成专业发票——填写企业信息、客户资料、商品明细和税额，直接打印或保存为 PDF，无需注册。
如何使用此工具
- 1填写表单中的各项信息。
- 2文档预览实时同步更新。
- 3点击「打印 / 保存为 PDF」，或复制文本内容。
常见问题
可以将发票下载为 PDF 吗？+
可以。填写完表单后，点击「打印 / 保存为 PDF」按钮，在浏览器的打印对话框中选择保存为 PDF 即可。
真的免费且隐私安全吗？+
是的。文档完全在浏览器本地生成，您输入的任何内容都不会上传，也无需注册，没有水印。
教程与深度解析
What Every Invoice Must Include (With Example)
A practical guide to every field a legally valid invoice needs — required elements, numbering schemes, payment terms, late fees, and digital vs. paper rules.
NDAs Explained: Mutual vs One-Way and Key Clauses
Learn when to use a mutual vs one-way NDA, what confidentiality terms are standard, which carve-outs matter, and the red flags that make agreements unenforceable.
Does Your Website Need a Privacy Policy? (GDPR, CCPA)
Find out if your website legally needs a privacy policy under GDPR, CCPA, and other laws — plus what to include, penalties for non-compliance, and how to get one fast.
How to Resign Professionally: Letter Template and Etiquette
Step-by-step guide to resigning professionally: notice period norms, what to include, how to handle counteroffers, and a ready-to-use resignation letter template.