How to Edit a PDF Online
Choose a PDF and the current page is rendered as a background while editor objects are maintained separately. Add text, an image, drawing strokes, highlights, rectangles, ellipses, lines or a visual cover. Objects can be selected, moved, resized, rotated or removed before export.
Choose a PDF and the current page is rendered as a background while editor objects are maintained separately. Add text, an image, drawing strokes, highlights, rectangles, ellipses, lines or a visual cover. Objects can be selected, moved, resized, rotated or removed before export. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Add Text to a PDF
Added text is stored as an editor object and written back with PDF text operations during export. Standard fonts such as Helvetica, Times Roman and Courier are used so added Latin text remains selectable and searchable. The tool does not claim that arbitrary existing PDF text can be rewritten like a word processor.
Added text is stored as an editor object and written back with PDF text operations during export. Standard fonts such as Helvetica, Times Roman and Courier are used so added Latin text remains selectable and searchable. The tool does not claim that arbitrary existing PDF text can be rewritten like a word processor. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Add Images
JPG and PNG images can be placed as separate overlays. Their aspect ratio is preserved by default, and they are embedded into the original PDF rather than causing the full source page to be rasterized.
JPG and PNG images can be placed as separate overlays. Their aspect ratio is preserved by default, and they are embedded into the original PDF rather than causing the full source page to be rasterized. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Draw and Highlight
Freehand drawing stores normalized points, while highlights are translucent rectangles. The export stage recreates these marks on the original page. An eraser only affects new drawing objects; it does not erase the PDF underneath.
Freehand drawing stores normalized points, while highlights are translucent rectangles. The export stage recreates these marks on the original page. An eraser only affects new drawing objects; it does not erase the PDF underneath. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Add Shapes
Rectangles, ellipses and lines are represented as vector-style overlay objects. Color, opacity and size can be adjusted. The visual Cover tool is intentionally labeled as a cover, not a secure redaction.
Rectangles, ellipses and lines are represented as vector-style overlay objects. Color, opacity and size can be adjusted. The visual Cover tool is intentionally labeled as a cover, not a secure redaction. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Move, Resize and Undo
Every editor object has normalized page coordinates so display zoom can change without permanently altering its saved location. Undo and redo keep editor object state rather than cloning the entire PDF buffer after every action.
Every editor object has normalized page coordinates so display zoom can change without permanently altering its saved location. Undo and redo keep editor object state rather than cloning the entire PDF buffer after every action. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Can Existing PDF Text Be Edited?
A PDF is a fixed-layout format. This editor is designed for additions and annotations. Existing page content remains the background unless a dedicated feature explicitly modifies it. Covering old text with white and adding replacement text is a visual edit, not a secure content removal technique.
A PDF is a fixed-layout format. This editor is designed for additions and annotations. Existing page content remains the background unless a dedicated feature explicitly modifies it. Covering old text with white and adding replacement text is a visual edit, not a secure content removal technique. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Editing Signed PDFs
Any change to a cryptographically signed PDF can invalidate the signature. Exported edited copies should therefore be treated as modified documents. If signature validity matters, preserve the original signed file separately.
Any change to a cryptographically signed PDF can invalidate the signature. Exported edited copies should therefore be treated as modified documents. If signature validity matters, preserve the original signed file separately. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Browser Privacy
The document is read from the local File object and processed in the browser. No upload form or remote editing endpoint is used. Static library files may be downloaded by the page, but PDF bytes and editor content are not sent with those requests.
The document is read from the local File object and processed in the browser. No upload form or remote editing endpoint is used. Static library files may be downloaded by the page, but PDF bytes and editor content are not sent with those requests. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Troubleshooting
If a PDF cannot be opened, it may be encrypted, damaged or use a structure unsupported by the browser libraries. Try the Unlock or Repair tools as appropriate. Very large pages can also require substantial memory; reducing zoom can make editing more comfortable without changing final coordinates.
If a PDF cannot be opened, it may be encrypted, damaged or use a structure unsupported by the browser libraries. Try the Unlock or Repair tools as appropriate. Very large pages can also require substantial memory; reducing zoom can make editing more comfortable without changing final coordinates. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Frequently Asked Questions
Can I edit PDFs for free?
The tool itself has no paid conversion API requirement.
Are PDFs uploaded?
No document upload endpoint is used.
Can I change existing PDF text?
Not generally. You can add new text and overlays.
Can I add images?
Yes, JPG and PNG overlays are supported.
Can I draw on PDFs?
Yes. Freehand paths are stored as editor objects and exported.
Is whiteout redaction?
No. Whiteout only covers content visually.
Can I undo changes?
Yes, editor-added object changes have undo and redo.
Does editing affect signatures?
Yes, modifying a signed PDF can invalidate its signature.
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