📄 PDF 工具PDF Tools
PDF 合并Merge PDF
把多个 PDF 合并成一个文件：拖入文件后可上下调整顺序、按文件名排序、只取每个文件的部分页码，也支持输入密码合并加密 PDF，全程在浏览器本地完成。Combine several PDFs into one — reorder files, sort by name, take only selected pages from each file, and merge password-protected PDFs after unlocking them. Everything happens locally in your browser.
PDF 拆分Split PDF
把一个 PDF 拆成多个文件：每页单独一个、每 N 页一份，或按自定义范围（如 1-3,4-10）分段，结果可逐个下载或打包 ZIP，文件只在本地处理。Split one PDF into several files — one file per page, every N pages, or custom ranges such as 1-3,4-10 — then download each part or everything as a ZIP. Processed locally.
PDF 提取页面Extract PDF Pages
从 PDF 中挑出需要的页面另存为新文件：输入页码范围或直接点击缩略图选择，还能按输入顺序重新排列页面，原页面无损复制，不上传文件。Pull selected pages out of a PDF into a new file — type a page range or click thumbnails, optionally in a new order. Pages are copied losslessly and nothing is uploaded.
PDF 删除页面Delete PDF Pages
删除 PDF 中不需要的页面（空白页、广告页、多余的附录）：输入页码或点击缩略图标记删除，其余页面原样保留并另存为新文件，本地处理不上传。Remove unwanted pages — blank pages, ads, extra appendices — by typing page numbers or clicking thumbnails; the remaining pages are kept untouched in a new file. Local processing, no upload.
PDF 旋转Rotate PDF
旋转 PDF 页面：一次旋转全部页面、指定页码，或点击缩略图逐页设置 90°/180°/270°，适合修正扫描件方向；只修改页面方向属性，内容和画质不变。Rotate PDF pages 90°, 180° or 270° — all pages, a page range, or page by page by clicking thumbnails. Ideal for fixing scanned documents; only the page orientation changes, content and quality stay the same.
PDF 裁剪Crop PDF
裁剪 PDF 页面边距：按毫米设置上下左右裁掉的宽度并实时预览，或一键自动裁掉每页的白边，可只处理指定页码，适合去掉扫描黑边、放大阅读区域。Crop PDF page margins — set top/right/bottom/left in millimeters with a live preview, or auto-trim the white border on every page, optionally only for selected pages. Great for removing scan borders or enlarging the reading area.
PDF 扁平化Flatten PDF
把 PDF 表单字段的填写内容固定到页面上、不可再编辑；或整页栅格化，把批注、印章、签名图层全部合并为图片，防止被修改或在不同阅读器里显示不一致。Flatten a PDF: bake filled-in form fields into the page so they can no longer be edited, or rasterize every page to merge annotations, stamps and signature layers into the image — preventing edits and display differences between viewers.
PDF 元数据编辑Edit PDF Metadata
查看和修改 PDF 的标题、作者、主题、关键词、创建程序、生成器和创建/修改时间，支持中文；也可一键清除全部元数据（包括 XMP），发布文件前保护隐私。View and edit a PDF's title, author, subject, keywords, creator, producer and creation/modification dates (Unicode supported), or strip all metadata including XMP in one click to protect privacy before sharing.
PDF 解除密码Unlock PDF
用你知道的密码解锁加密 PDF，另存为无需密码、无打印/复制限制的新文件；只有权限限制（没有打开密码）的 PDF 可直接解除，支持 AES-256/AES-128/RC4，本地处理不上传。Unlock an encrypted PDF with the password you know and save a copy with no password and no print/copy restrictions. PDFs with only permission restrictions (no open password) unlock directly. Supports AES-256, AES-128 and RC4; processed locally.
PDF 加密Protect PDF with Password
给 PDF 设置打开密码（AES-256 加密），并可限制打印、复制文字、修改、批注、填写表单和页面重组；未填写权限密码时自动生成高强度随机密码，全部在本地完成，密码不会上传。Password-protect a PDF with AES-256 encryption and optionally restrict printing, copying, editing, annotating, form filling and page assembly. A strong random owner password is generated if you leave it blank. Runs locally — your password never leaves the browser.
PDF 压缩Compress PDF
在浏览器里减小 PDF 体积：重新压缩文件中的照片（降低分辨率和 JPEG 质量）并优化文件结构，文字保持可搜索；也可整页栅格化获得最大压缩率，会实时显示压缩前后大小。Shrink PDFs in your browser — re-compress embedded photos (lower resolution and JPEG quality) and optimise the file structure while text stays searchable, or rasterize whole pages for maximum compression. Before/after sizes are shown.
PDF 加水印Add Watermark to PDF
给 PDF 批量添加文字或图片水印：支持中文、多行文字、颜色、透明度、旋转角度，可放在中间、角落或平铺满页，也可置于内容下方，只处理指定页码，全部在本地完成。Stamp a text or image watermark on PDF pages — Chinese and multi-line text, color, opacity and rotation, placed in the centre, a corner or tiled across the page, optionally beneath the content and only on selected pages. All done locally.
PDF 签名Sign PDF
在 PDF 上添加手写签名：用鼠标或手指在签名板上书写、输入姓名生成签名，或上传签名照片并自动去除白底；拖动摆放到任意页面、调整大小，可放置多处，文件不上传。Add a handwritten signature to a PDF — draw it with a mouse or finger, type your name, or upload a photo of your signature with the white background removed. Drag it anywhere on any page, resize it, place it several times. Nothing is uploaded.
PDF 转 JPGPDF to JPG Converter
把 PDF 的每一页转换成高清 JPG 图片：可选 72–600 DPI 分辨率、JPG 质量、背景色和页码范围，多页可打包 ZIP 下载，适合发朋友圈、插入文档或网页展示，全部本地完成。Turn every PDF page into a sharp JPG image — choose 72–600 DPI, JPEG quality, background color and page range, then download each image or a ZIP. Ideal for social posts, documents and web pages; fully local.
PDF 转 PNGPDF to PNG Converter
把 PDF 页面转换为无损 PNG 图片，文字和线条边缘清晰锐利，可选透明背景（适合制作贴图、幻灯片素材），支持 72–600 DPI 和页码范围，批量打包 ZIP，文件不上传。Convert PDF pages into lossless PNG images with crisp text and line edges, optionally with a transparent background for overlays and slides. 72–600 DPI, page ranges and ZIP download; files never leave your device.
PDF 转 TIFFPDF to TIFF Converter
把 PDF 转换为 TIFF 图像：可合并成一个多页 TIFF 或每页单独保存，支持 LZW 无损压缩、彩色或灰度、72–600 DPI，写入分辨率信息，适合传真、存档和印刷流程。Convert a PDF into TIFF images — one multi-page TIFF or a file per page, with lossless LZW compression, color or greyscale and 72–600 DPI with resolution tags written. Suited to fax, archiving and print workflows.
PDF 转文本（提取文字）PDF to Text Converter
从 PDF 中提取全部文字并保留行和段落结构：支持中文、多栏间距识别、按页分隔，可复制或下载为 TXT；也提供“原始顺序”模式，加密 PDF 输入密码后同样可用，不上传文件。Extract all the text from a PDF while keeping lines and paragraph breaks — Chinese supported, column gaps detected, optional page separators — then copy it or download a TXT. A raw-order mode is also available, and encrypted PDFs work with their password. No upload.
PDF 转 WordPDF to Word Converter
把 PDF 转成可编辑的 Word（.docx）：自动把文字整理成段落、识别标题并套用 Word 标题样式、保留分页；也可选择“每页一张图片”模式完整保留版式。中文可用，文件在本地生成。Convert a PDF into an editable Word (.docx) document — text is rebuilt into paragraphs, headings are detected and mapped to Word heading styles, page breaks are kept. Or choose one-image-per-page to preserve the exact look. Chinese supported; generated locally.
PDF 转 ExcelPDF to Excel Converter
把 PDF 里的表格和数据转换成 Excel（.xlsx）：按文字位置自动分行分列，金额和千分位数字转为真正的数值，每页一个工作表或合并到一张表，转换前可预览，全部在浏览器完成。Convert tables and data in a PDF to Excel (.xlsx) — rows and columns are inferred from text positions, amounts with thousands separators become real numbers, one sheet per page or all on one sheet, with a preview. Runs entirely in your browser.
PDF 转 PPTPDF to PowerPoint Converter
把 PDF 每一页转换成 PowerPoint（.pptx）幻灯片：幻灯片尺寸自动匹配 PDF 页面比例，画面高清不变形，页面文字可写入演讲者备注方便搜索和讲解，在浏览器本地生成。Turn each PDF page into a PowerPoint (.pptx) slide — slide size matches the PDF page ratio, pages stay sharp and undistorted, and page text can go into the speaker notes for searching and presenting. Generated locally in your browser.
PDF 转 EPUB 电子书PDF to EPUB Converter
把文字型 PDF 转换成可重排的 EPUB 3 电子书，在手机、Kindle（经转换）、Apple Books 上自动适应屏幕：自动合并段落、按标题或页数分章、生成目录，可修改书名和作者，本地完成。Convert a text-based PDF into a reflowable EPUB 3 e-book that adapts to phones, Apple Books and other readers — paragraphs are merged, chapters split by headings or page count, a table of contents is generated, and you can set title and author. Runs locally.
HEIC 转 PDF（iPhone 照片）HEIC to PDF Converter
把 iPhone 拍的 HEIC/HEIF 照片转换成 PDF：可一次放入多张并调整顺序，每张一页，可选按照片尺寸或 A4/Letter 纸张、页边距和 JPEG 质量；也能混入 JPG/PNG，在浏览器本地解码，不上传。Turn iPhone HEIC/HEIF photos into a PDF — add several, reorder them, one photo per page, sized to the photo or to A4/Letter with margins and JPEG quality. JPG/PNG can be mixed in. Decoded locally in your browser, nothing uploaded.
GIF 转 PDF（支持动图逐帧）GIF to PDF Converter
把 GIF 图片转换成 PDF，动图可以拆成每帧一页（适合把表情包、动画分镜或教程步骤打印出来），也可只取第一帧；多文件合并、排序，默认无损保存像素，全部在浏览器完成。Convert GIF images to PDF — animated GIFs can be split into one page per frame (handy for printing storyboards, tutorials or sticker sheets) or reduced to the first frame. Combine and reorder several files; pixels are stored losslessly by default, all in your browser.
TIFF 转 PDF（多页扫描件）TIFF to PDF Converter
把 TIFF/TIF 文件（包括扫描仪和传真生成的多页 TIFF）转换为 PDF：每页一页，按 TIFF 记录的 DPI 还原真实纸张尺寸，支持 LZW、Deflate、PackBits、CCITT 传真压缩，黑白和灰度页无损保存，本地完成。Convert TIFF/TIF files — including multi-page scans and faxes — to PDF, one page per image, restoring the real paper size from the stored DPI. Handles LZW, Deflate, PackBits and CCITT fax compression and stores black-and-white and grayscale pages losslessly, all locally.
TXT 转 PDF（纯文本转 PDF）TXT to PDF Converter
把 TXT 文本或粘贴的文字排版成 PDF：自动识别 UTF-8/GBK/Big5 编码，中文自动嵌入字体，可设字号、行距、页边距、纸张方向，支持行号、页眉文件名和页码，中英文自动换行，换页符分页，本地生成。Typeset a TXT file or pasted text into a PDF — UTF-8/GBK/Big5 detected automatically, CJK font embedded when needed, adjustable font size, line spacing, margins and orientation, optional line numbers, filename header and page numbers, proper wrapping for Chinese and English, form-feed page breaks. Generated locally.
CSV 转 PDF（表格打印）CSV to PDF Converter
把 CSV 数据排成可打印的 PDF 表格：自动识别逗号/分号/Tab 分隔和文件编码，列宽按内容自动分配，长文本在单元格内换行，表头每页重复，数字右对齐，列多时自动横向或缩小字号，可加网格线、斑马纹和页码。Lay out CSV data as a printable PDF table — comma/semicolon/tab delimiters and file encoding detected, column widths sized to content, long text wrapped inside cells, header repeated on every page, numbers right-aligned, automatic landscape or smaller font for wide tables, plus optional grid lines, zebra stripes and page numbers.