> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/web/edit-page-content/edit.md).

# PDF and Document Editing with the JavaScript PDF Editor Library

Enhance document editing capabilities with the PDF & document editing JavaScript library. Edit text, images, metadata, bookmarks, and more with ease. Stamp content, add watermarks, and manipulate grap

Document editing provides the ability to change content so that its data can be improved or re-purposed.

Apryse SDK benefits include:

* Remove specific content from existing pages (e.g. based on some property or on positioning information on the page)
* Insert or append new content to existing pages
* Modify properties/attributes on existing graphical elements (e.g. change font, inter-character spacing, fill color, etc.)
* Edit text, images, and paths
* Edit document metadata
* Edit bookmarks and page annotations
* Undo or redo any change
* Edit every aspect of the document through COS API

## Get started

[Coordinates](/web/edit-page-content/coordinates.md) An introduction to coordinate systems such screen, page, or scrolling coordinates.

[Stamp content](/web/edit-page-content/stamp.md) To stamp text, image, or PDF page to a PDF document.

[Watermark](/web/edit-page-content/watermarks.md) To overlay a stamped text on each page of a document as a watermark to documents.

[Remove images](/web/edit-page-content/remove.md) To remove all images from a PDF document page.

[Reading page content](/web/edit-page-content/read.md) An introduction to reading page content.

[Write page content](/web/edit-page-content/write.md) An introduction to writing page content.

[Replace page content](/web/edit-page-content/replace.md) To replace PDF text or image with a target region.

[Graphics state](/web/edit-page-content/graphics-state.md) An introduction to graphics state.

[Edit Text on PDF files](/web/edit-page-content/text-edit.md) Edit text directly on PDF files (experimental feature).


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# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.apryse.com/web/edit-page-content/edit.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.