将图片转换为 PDF，对于归档收据、制作相册、将截图以文档形式发送，或将商品图片合并为单个交付物都很有用。
何时将图片转换为 PDF
- 归档收据与文件。 将扫描或拍摄的收据合并为一个 PDF 以便报销。
- 相册与作品集。 将相关图片归为单个文件以便邮件或分享。
- 客户交付物。 将商品图片、情绪板或截图以单个 PDF 发送，而非单独的文件。
- 印刷准备。 为偏好 PDF 输入的印刷服务准备图片。
可靠的流程
- 若图片比所需大很多，先使用 图片调整尺寸工具。
- 打开 图片转 PDF 转换器。
- 上传你的 JPG、PNG 或 WebP 图片。
- 按你想要的顺序排列。
- 选择页面尺寸与适配设置。
- 下载合并后的 PDF。
PDF 转换前准备图片
清晰且尺寸合宜的图片能产出更好的 PDF。开始前几项检查：
- 调整过大图片的尺寸。 文档中使用 4000px 的照片会让 PDF 变得臃肿。使用 图片调整尺寸工具 将尺寸降到实用大小。
- 压缩过重的文件。 将大文件通过 图片压缩工具 处理后再加入 PDF。
- 转换不兼容的格式。 若部分图片为 PDF 工具不支持的格式，请先用 图片转换工具 切换为 JPG 或 PNG。
何时改用其他方式
PDF 转换并不总是最佳选择。若收件者需要可编辑的图片，请改以 ZIP 分享原始文件。若输出是给相册印刷服务使用，请确认该服务偏好单独图片而非合并的 PDF。
常见问题
我可以将多张图片合并成一个 PDF 吗？
可以。上传所有需要的图片，按正确顺序排列，选择页面尺寸与适配设置，然后下载合并后的 PDF。
哪些图片格式可以转换为 PDF？
支持 JPG、JPEG、PNG 与 WebP 图片。多数现代浏览器也能解码 HEIC 图片进行转换。
转换为 PDF 会降低图片画质吗？
PDF 默认会以原始分辨率嵌入图片。若你想要更小的文件，请在转换前先调整尺寸或压缩图片。
我可以免费将图片转换为 PDF 吗？
可以。ImgKit 图片转 PDF 转换器可免费使用。所有处理都在浏览器中完成 — 不需要账号或上传。
有哪些可用的页面尺寸？
通常可使用 A4、US Letter 与适应图片（fit-to-image）等常见尺寸。部分工具也提供自定义尺寸。
Resources
参考资料
利用这些参考资料，在指南、对应的支持页面与内容创作者之间切换。
Convert between JPG, PNG, and WebP formats in your browser.
打开工具Image CompressorCompress JPG, PNG, and WebP images locally with quality controls.
打开工具Image Resize ToolResize images to exact pixel dimensions with local browser processing for supported files.
打开工具Image to PDFCombine JPG, PNG, or WebP images into one PDF in your browser.
打开工具网站最佳图片尺寸：实用指南在不浪费页面加载量的情况下，为网站主视觉、博客图片、产品照片、缩略图与 Retina 屏幕挑选实用的图片尺寸。
阅读指南网站图片该用 JPG、PNG 还是 WebP？针对照片、标志、截图、透明背景与日常网站发布，比较 JPG、PNG 与 WebP。
阅读指南Leon PatelCreates how-to guides and photo tips that keep the advice simple, clear, and ready to use in Gift Studio.
查看作者Dylan RossChecks guides and photo tips for freshness, usefulness, and a calm editorial voice.
查看审核者打开 Gift StudioApply the guide in the editor when you are ready to make the gift.
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