Is my PDF uploaded to a server?

No. All editing happens entirely in your browser using Canvas and PDF.js. Your file never leaves your device.

What types of annotations can I add?

You can add text, highlights, rectangles, ellipses, lines, arrows, freehand drawings, images, electronic signatures, page numbers, and whiteout.

Can I sign a PDF with this editor?

Yes! Use the Signature tool to draw your signature with a mouse, stylus, or finger. Your signature is saved locally for reuse.

Is the whiteout tool a secure redaction?

No. The whiteout tool places a white rectangle over the content. The original text remains in the PDF data.

What is the maximum PDF size supported?

You can edit PDFs up to 100 MB. Very large documents may take a few seconds to load thumbnails.

PDF Editor · 100% local

PDF Editor

Add text, highlights, shapes, drawings, signatures, and page numbers to any PDF. All editing happens in your browser.

100% local

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Everything about online PDF editing

Why edit PDFs in the browser?

Traditional PDF editors like Adobe Acrobat cost $20+/month and require installation. Our browser-based editor lets you add text, annotations, highlights, and signatures to any PDF instantly — no software to install, no account required. Perfect for filling out forms, signing contracts, or annotating documents on the go from any device.

Common use cases

Adding your signature to contracts, leases, or official forms without printing. Filling in PDF forms (tax documents, applications, registration forms) directly in the browser. Annotating and highlighting sections of reports or academic papers for review. Adding notes or corrections to architectural plans, invoices, or legal documents. Quick edits when you don't have Acrobat installed on the current device.

Features & technical details

Our editor uses PDF.js for rendering and canvas-based annotation layers. You can add freehand drawings, text boxes, highlights, and image stamps. All edits are flattened into the final PDF on export, making them permanent and visible in any PDF reader. The original document structure, fonts, and vector graphics are preserved. Processing happens entirely in your browser — your documents never leave your device. Supports PDFs up to 100 MB on the free plan.

How it works

How to use the PDF Editor

Upload your PDF
Drag and drop your PDF or click to browse. The file stays in your browser.
Add annotations
Use the toolbar to add text, highlights, shapes, drawings, images, or signatures on any page.
Download the result
Click Download PDF to get your edited file with all annotations flattened into the document.

Practical guides

Why use our PDF Editor

Professional annotations

Add text, highlights, stamps, and signatures to any PDF without expensive software. Perfect for reviewing documents, signing contracts, or filling forms.

All edits are flattened into the final PDF, so recipients see your annotations exactly as you placed them.

Client-side

Private & secure

Your PDF never leaves your device. All rendering and editing is done locally using PDF.js and pdf-lib.

No account required for basic editing. Your signature is saved only in your browser's local storage.