免费在线 PDF 编辑器

在浏览器中编辑PDF:添加文本、形状、图像等,导出新PDF,无需上传。

Online PDF editor. Add text, shapes, drawings, images and signatures to a PDF, fill forms, white out text, and manage pages, then export a new PDF in your browser.

免费在线 PDF 编辑器

打开 PDF 并直接在浏览器中编辑:添加文本、形状、图形、高亮、图像和签名,涂白和替换文本,填写表单,并重新排序、旋转或删除页面。然后导出新的 PDF。所有操作都在您的设备上进行,因此无需上传任何内容。

Drop a PDF to edit

or click to browse. Your file never leaves your device.

PDF files. Everything is processed on your device.

Nothing leaves your device

The editor runs inside your browser tab. Your PDF is never uploaded to a server, so your document stays yours.

Free with no account

No signup, no watermark, no page limit, and no trial timer. Open the page and start editing.

A real editor, not one trick

Content, forms, text replacement and page management in one place, not a single narrow tool.

Everything the Editor Does

A real PDF editor in your browser, from adding content to managing pages, all on your own device.

Add and Edit Content

Add Anything to a Page

Drop in text boxes, shapes, freehand drawing, highlights, images and signatures. Move, resize and rotate each one.

White Out and Replace Text

Cover text with a white box and type new text on top, the reliable way to change wording in a browser.

Fill Forms and Fields

Fill existing PDF form fields, or place your own text and checkbox fields anywhere on the page.

Pages and Export

Manage Pages

See every page as a thumbnail, then drag to reorder, rotate, delete, duplicate, or insert a blank page.

Sign and Draw

Draw a signature or type one, add a hand-drawn note, or highlight a passage, right on the page.

Export One New PDF

Every edit is stamped into a fresh PDF you download. Private, on-device, no upload and no account.

From Open to Edited PDF

  1. Open your PDF

    Drop a PDF in and every page renders in the editor. Your file is read in your browser and never uploaded.

  2. Add or edit content

    Pick a tool and click or drag on a page to add text, a shape, a drawing, a highlight, an image or a signature. Use white-out to cover text, then type new wording on top.

  3. Manage pages

    Use the page panel to drag pages into a new order, rotate them, delete or duplicate a page, or add a blank one.

  4. Export a new PDF

    Press export and every change is stamped into a fresh PDF you download, all on your device.

What You Can Do to a PDF

Add content

  • Text boxes, any size and colour
  • Rectangles, ellipses and lines
  • Freehand drawing
  • Highlighter
  • Images from your device
  • Drawn signature

Edit and fill

  • White out any region
  • Type new text over it
  • Fill form-style fields
  • Checkmarks and ticks
  • Move and resize anything
  • Delete any element

Manage pages

  • Reorder by dragging
  • Rotate a page
  • Delete a page
  • Duplicate a page
  • Insert a blank page
  • Page thumbnails

Private and free

  • Runs on your device
  • Nothing uploaded
  • No account or signup
  • No watermark
  • No page limit
  • Export a clean PDF

What Runs in a Browser, and What Does Not

The editor renders and rewrites the PDF on your device, so your document stays private. That sets a couple of honest limits worth knowing.

Works wellWhere the limits are
Adding text, shapes, images and signaturesEditing the original text is done by white-out and retype, not by changing the existing glyphs
Filling fields and adding checkmarksComplex scripted forms may not map every field
Reordering, rotating and deleting pagesVery large PDFs can be slow to render page by page
Private, on-device processing with no uploadNo OCR of scanned text and no cloud effects

Troubleshooting

Why can't I edit the existing text directly

A PDF stores text as positioned glyphs, not editable paragraphs, so changing it in place is not reliable in a browser. The dependable way is to white out the old text and type new wording on top, which this editor does in one flow.

A page will not render or looks blank

Some PDFs are encrypted or use unusual fonts. Try a copy that is not password protected. Scanned PDFs render as an image, so you can annotate them but there is no selectable text.

My placed item sits slightly off in the export

The editor maps screen positions to PDF points, which is very close but can differ by a hair on rotated pages. Nudge the item and export again if you need it exact.

The export is taking a while

Rendering and rewriting happen on your device, so a long or image-heavy PDF takes real time. Close other heavy tabs so the browser has memory to spare.

如何运作

PDF 编辑器直接在您的浏览器中操作,无需任何上传或账户。用户可以通过将 PDF 文件拖入界面来导入文件。一旦加载,该工具允许进行各种修改,包括添加文本、形状和图像。用户可以突出显示部分内容、自由绘制或放置签名。编辑后,该工具实时处理更改,并允许将修改后的文档导出为新的 PDF 文件。

所有编辑都是使用浏览器渲染技术应用的。该工具利用 HTML5 Canvas 进行绘图,并使用 SVG 进行可缩放图形。用户可以交互式地填写表单,并通过重新排序、旋转或删除页面来操作页面。最终输出是一个完全功能的 PDF,确保在不同 PDF 查看器之间的兼容性,同时保留原始文件的完整性。

何时使用

当您需要快速更改文档而无需安装软件时,请使用 PDF 编辑器。例如,如果您收到一份需要您签名的 PDF 合同,您可以直接在浏览器中添加签名。此外,如果您需要在报告中突出显示关键点以便于演示,该工具允许您高效地做到这一点,确保您的编辑清晰可见。

在处理复杂布局时请小心,因为某些复杂设计可能无法完美渲染。在填写表单时,确保在导出之前所有字段都正确填写。如果您需要删除页面,请仔细检查顺序,以避免丢失关键信息。在进行重大更改之前,始终保存原始 PDF 的副本,以防止意外数据丢失。