All Converter Pro
在线转换 PNG 转 PDF
在线免费将 PNG 转换为 PDF。将截图和图形合并为一个文档,透明区域会被干净地处理。无需注册,无水印。
关于此 PNG 转 PDF 工具
PNG to PDF converts screenshots, exported graphics and design assets into a document you can send, print or archive. Select several PNGs and they become one multi-page PDF in your chosen order - the usual reason being that a report, bug write-up or design review is easier to read as a single document than as a folder of loose image files. Transparent areas in a PNG are flattened onto a solid page, because PDF pages are opaque, so a logo on a transparent canvas appears on a clean background rather than as a checkerboard. Up to 30 images can be combined in one pass.
如何使用 PNG 转 PDF
- 打开工具并添加您的文件、文字或数值。
- 检查可用选项,例如页面范围、输出格式、质量、密码或语言。
- 开始处理,并在完成前保持浏览器窗口打开。
- 下载结果,如有需要可继续使用相关工具。
实用提示
- 对于扫描的 PDF,支持 OCR 的工具会尽可能自动运行文字识别。
- 对于大文件,在通过邮件分享或上传到门户网站之前,请使用压缩工具。
- 为获得最佳效果,请上传扩展名正确的干净文件,避免使用损坏的文档。
常见问题
What happens to transparent areas in my PNG?
PDF pages are opaque, so transparency is flattened onto a solid page background. The visible artwork is unchanged - only the see-through areas become solid.
Can I put several screenshots into one PDF?
Yes. Select them all and they are combined into a single multi-page PDF in the order you selected, one image per page.
Is the image quality preserved?
Yes. PNG is lossless and the images are embedded as-is, so screenshots and text-heavy graphics stay sharp in the PDF.
Can I mix PNG and JPG files?
Yes. PNG, JPG, WebP, BMP and TIFF can all be combined into the same document.
How many images can I convert at once?
Up to 30 images in a single PDF. For more, create several PDFs and combine them with Merge PDF.
this tool 免费吗?
Yes - free, no signup, and no watermark on the output.