# Baimiao PDF (白描 PDF)

> Baimiao PDF is a multilingual online toolbox for PDF conversion, OCR, document translation, and privacy-friendly PDF, image, and GIF processing. Many tools run entirely in the browser without uploading files.

Baimiao PDF（白描 PDF）提供 PDF 转换、OCR、文档翻译，以及 PDF、图片和 GIF 处理工具。标注为本地工具的功能直接在浏览器中运行，文件不会上传到服务器。

- Website: https://pdf.baimiaoapp.com/
- Simplified Chinese: https://pdf.baimiaoapp.com/zh-hans
- English: https://pdf.baimiaoapp.com/en
- Sitemap: https://pdf.baimiaoapp.com/sitemap.xml
- Pricing: https://pdf.baimiaoapp.com/pricing
- Help: https://pdf.baimiaoapp.com/doc/help
- Security and privacy: https://pdf.baimiaoapp.com/doc/security-and-privacy

## Local PDF tools

The following free tools process files locally in the browser. Files are not uploaded to the Baimiao PDF server.

- [Compress PDF / PDF 压缩](https://pdf.baimiaoapp.com/pdf-compress): Reduce PDF size, especially for scanned and image-heavy PDFs.
- [Optimize PDF / PDF 无损优化](https://pdf.baimiaoapp.com/pdf-optimize): Optimize PDF structure without intentionally lowering image quality.
- [Merge PDF / PDF 合并](https://pdf.baimiaoapp.com/pdf-merge): Combine multiple PDFs and reorder them before export.
- [Split PDF / PDF 拆分](https://pdf.baimiaoapp.com/pdf-split): Split a PDF by page ranges.
- [Extract PDF pages / PDF 页面提取](https://pdf.baimiaoapp.com/pdf-extract): Create a new PDF from selected pages.
- [Delete PDF pages / PDF 删除页面](https://pdf.baimiaoapp.com/pdf-delete-pages): Remove selected pages from a PDF.
- [Rotate PDF pages / PDF 页面旋转](https://pdf.baimiaoapp.com/pdf-rotate): Rotate all or selected PDF pages.
- [Reorder PDF pages / PDF 页面重排](https://pdf.baimiaoapp.com/pdf-reorder): Rearrange pages into a specified order.
- [Add PDF page numbers / PDF 添加页码](https://pdf.baimiaoapp.com/pdf-page-numbers): Add configurable page numbers to a PDF.
- [Add PDF watermark / PDF 添加水印](https://pdf.baimiaoapp.com/pdf-watermark): Add configurable text or image watermarks.
- [Clean PDF metadata / PDF 元数据清理](https://pdf.baimiaoapp.com/pdf-metadata-cleanup): Remove common document information fields.
- [Encrypt PDF / PDF 加密](https://pdf.baimiaoapp.com/pdf-encrypt): Protect a PDF with an open password.
- [Remove PDF password / 移除 PDF 密码](https://pdf.baimiaoapp.com/pdf-remove-password): Create an unencrypted copy when the current password is known.
- [PDF to images / PDF 转图片](https://pdf.baimiaoapp.com/pdf-to-images): Export PDF pages as images.
- [Images to PDF / 图片转 PDF](https://pdf.baimiaoapp.com/images-to-pdf): Combine JPG or PNG images into a PDF.

## Local image and GIF tools

These tools also run in the browser without uploading source files.

- [Image converter / 图片格式转换](https://pdf.baimiaoapp.com/image-converter): Convert between HEIC, HEIF, JPG, PNG, WebP, GIF, and BMP formats.
- [HEIC converter / HEIC 转换](https://pdf.baimiaoapp.com/heic-converter): Convert iPhone HEIC, HEIF, and LIVP images.
- [Image compressor / 图片压缩](https://pdf.baimiaoapp.com/image-compress): Compress common image formats with quality and size controls.
- [Image resizer / 图片调整尺寸](https://pdf.baimiaoapp.com/image-resize): Resize images while preserving aspect ratio.
- [Image cropper / 图片裁剪](https://pdf.baimiaoapp.com/image-crop): Crop images using free-form or common aspect ratios.
- [Image privacy mask / 图片隐私遮挡](https://pdf.baimiaoapp.com/image-privacy-mask): Redact areas with mosaic, blur, or solid-color masks.
- [Image watermark / 图片水印](https://pdf.baimiaoapp.com/image-watermark): Add configurable text watermarks to images.
- [Image border and rounded corners / 图片边框与圆角](https://pdf.baimiaoapp.com/image-border-radius): Add borders, padding, and rounded corners.
- [Rotate and flip images / 图片旋转与翻转](https://pdf.baimiaoapp.com/image-rotate-flip): Batch rotate or flip images.
- [AI background remover / AI 图片背景移除](https://pdf.baimiaoapp.com/image-rembg): Remove image backgrounds locally with WebGPU or WASM and export transparent PNG files.
- [Images to GIF / 图片转 GIF](https://pdf.baimiaoapp.com/image-to-gif): Combine multiple images into an animated GIF.
- [Video to GIF / 视频转 GIF](https://pdf.baimiaoapp.com/video-to-gif): Convert a selected video clip to an animated GIF.
- [GIF frame extractor / GIF 拆帧](https://pdf.baimiaoapp.com/gif-to-images): Export GIF frames as PNG images.

## Cloud document conversion and OCR

These services upload input files or images for server-side conversion or recognition. Usage limits, sign-in, or payment may apply.

- [PDF to Word](https://pdf.baimiaoapp.com/pdf-to-word): Convert PDFs, including scanned documents, into editable Word files.
- [PDF to Excel](https://pdf.baimiaoapp.com/pdf-to-excel): Recognize tables in PDFs and export editable Excel workbooks.
- [PDF to PowerPoint](https://pdf.baimiaoapp.com/pdf-to-ppt): Convert PDFs into editable PowerPoint presentations.
- [PDF to Markdown](https://pdf.baimiaoapp.com/pdf-to-markdown): Extract and recognize PDF content as Markdown.
- [PDF translation](https://pdf.baimiaoapp.com/pdf-to-word-translation): Translate PDFs with standard or bilingual output.
- [Image OCR / 图片文字识别](https://pdf.baimiaoapp.com/image-ocr): Extract multilingual text from images and scanned PDF pages.
- [Image table to Excel / 图片表格转 Excel](https://pdf.baimiaoapp.com/image-to-excel): Recognize tabular images and export Excel files.
- [Image formula to LaTeX / 图片公式转 LaTeX](https://pdf.baimiaoapp.com/image-to-latex): Recognize mathematical expressions and return LaTeX.

## Product and policy information

- [Pricing and plans](https://pdf.baimiaoapp.com/pricing): Free local tools, page packages, and memberships for cloud services.
- [Baimiao Toolbox plugins](https://pdf.baimiaoapp.com/plugins): Baimiao document and media tools for AI coding agents.
- [Help center](https://pdf.baimiaoapp.com/doc/help): Product usage guidance and frequently asked questions.
- [Security and privacy](https://pdf.baimiaoapp.com/doc/security-and-privacy): How local and cloud processing handle user files.
- [Privacy policy](https://pdf.baimiaoapp.com/doc/privacy-policy): Privacy terms and data handling policy.
- [Terms of service](https://pdf.baimiaoapp.com/doc/terms-of-service): Service terms.
- [Purchase agreement](https://pdf.baimiaoapp.com/doc/purchase-agreement): Purchase and billing terms.
- [Refund policy](https://pdf.baimiaoapp.com/doc/refund-policy): Refund rules and eligibility.

## Guides

- [How to convert PDF to Word](https://pdf.baimiaoapp.com/article/how-to-convert-pdf-to-word)
- [PDF to Excel vs. image to Excel](https://pdf.baimiaoapp.com/article/pdf-to-excel-vs-image-to-excel)
- [PDF to Word for teachers and exam papers](https://pdf.baimiaoapp.com/article/pdf-to-word-converter-for-teachers-exam-papers)

## Languages

The site supports Simplified Chinese, Traditional Chinese, English, German, Spanish, French, Indonesian, Italian, Japanese, Korean, Portuguese, and Russian. Add the corresponding locale prefix to a page path: `/zh-hans`, `/zh-hant`, `/en`, `/de`, `/es`, `/fr`, `/id`, `/it`, `/ja`, `/ko`, `/pt`, or `/ru`.

Use the sitemap for the complete canonical and localized URL inventory: https://pdf.baimiaoapp.com/sitemap.xml