01
Choose PDF
Select the PDF you want to edit. The page preview engine renders the document locally.
Page operation editor
Edit PDF pages in your browser.
Add text, marks, shapes, and signatures on top of PDF pages.Place text, shapes, lines, and signature images against real page previews before export.
Workflow preview
Browser-based where supportedInput
One PDF
Runtime
PDF.js preview
Output
Edited PDF
Text placementShape overlaysSignature image support
Loading editor engine...
Editor pipeline
The editor sends page-aware operations into the shared PDF engine, so text, shapes, lines, and signature overlays are applied against the selected page during export.
Browser operation path
Page previews, click placement, and final export all run in the browser. That keeps edit placement responsive without sending the source file to a remote editor.
Metadata handling
The export pass now records a clean local editor signature in the output metadata while preserving the new page-level operations you placed in the UI.
How to use Edit PDF
A clear browser-session workflow for edit PDF work.
The interface should make the route visible: select files, perform the operation, and download the output from the same session.
02
Place operations
Choose text, shapes, lines, or a signature image, then place that operation on the page preview.
03
Export edited file
Download the edited PDF with page-based operations applied by the local engine.
Why local processing matters
Compare the processing route before using sensitive documents.
DocuStitch labels supported workflows around the browser session rather than hiding the path behind a generic cloud promise.
DocuStitch supported workflow
- Files selected on device
- Operation runs in browser session
- Output downloads from the tab
Typical cloud workflow
- Files uploaded to remote queue
- Processing depends on server retention policy
- Output returned after transfer
How it works
Editing should be page-aware and honest about current tools.
Annotation engineText blocks, rectangles, circles, lines, and signature images become explicit edit operations before export.
Real page previewsPDF.js renders each page locally so placement happens against real page coordinates.
Local editingEditing happens in your browser session for standard workflows.
Operator notes
Secure PDF editing with local page operations
Editing PDF files is essential for document collaboration, but reliable local editing needs stable document operations underneath it. This route uses operation-based editing.
Why local editing matters
The browser workflow renders previews locally, places edits against real page coordinates, and exports the result without sending the file to a remote server for standard workflows.
Practical annotation tools
Structured text, line, shape, and signature operations are wired into the shared edit engine and exported into the edited PDF.
01
Text annotation
Add placed text anywhere on your PDF with size, color, and bold controls.
02
Drawing tools
Place rectangles, circles, and lines with page-aware coordinates.
03
Markup scope
Shape-based markup is live while richer highlight tools remain part of the next editing upgrade.
04
Signature images
Upload and place a visible signature image locally before downloading the edited file.
FAQ
Frequently asked questions
Everything you need to know about Edit PDF.
Is it safe to edit sensitive PDFs online?
The active workflow runs locally in your browser and does not require a separate upload queue for standard use.
Can I add signatures to PDFs?
Yes. You can upload a PNG or JPG signature image and place it on the page before exporting the edited PDF.
Does editing affect the original PDF quality?
The current export path preserves PDF output while applying your new overlay operations through the local engine.
Can I edit password-protected PDFs?
Locked-file handling still needs a dedicated follow-up pass, so it is best to unlock the document first.
Do I need to install any software?
No. The workflow runs in modern browsers with WebAssembly support.
Knowledge hub
Return to workspace
Start processing in your browser.
Supported workflows run locally in your browser session, so you can finish document tasks without a cloud upload step.