Lumicore LabsFree PDF EditorOpen Editor

Free PDF Editor — Edit PDFs Online, Instantly

Add text, draw signatures, annotate, and save your PDFs — 100% free, no sign-up, and completely private . Your files never leave your device.

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Everything You Need

Add Text

Insert editable text boxes anywhere on any PDF page with custom fonts and colours.

Draw Signatures

Sign documents by drawing your signature directly on the PDF with your mouse or touchscreen.

Freehand Drawing

Annotate PDFs with freehand drawings, highlights, and shapes.

Undo / Redo

Full undo/redo history so you can experiment freely without fear of mistakes.

OCR Text Extraction

Extract text from scanned PDFs using the built-in Tesseract.js OCR engine.

100% Private

Your PDF never leaves your device. All processing happens in the browser.

Why Use Our Free PDF Editor?

Unlike other online PDF editors that upload your documents to remote servers, our tool processes everything inside your browser using WebAssembly and the pdf.js rendering engine. Your confidential contracts, invoices, and personal documents are never transmitted — they stay on your device throughout the entire editing session.

There is no account to create, no email to verify, and no software to install. Open the editor, drop in your PDF, and start editing in seconds. When you're done, hit Save and the finished file downloads straight to your device — with no watermarks added, ever.

Key Features

  • Add text annotations with custom font size and colour
  • Draw freehand signatures directly on the PDF with mouse or touchscreen
  • Freehand drawing and highlight layer for visual markup
  • Undo / redo history (up to 50 steps) so you can experiment freely
  • OCR — extract text from scanned PDFs powered by self-hosted Tesseract.js (no external API calls)
  • Multi-page PDF support with instant page navigation
  • Download the edited PDF instantly — no watermarks, no limits

Trusted Tools

Explore our specialised tools: Edit PDF Online , Sign PDF Online , Free PDF Editor , and OCR PDF — all free, all private, all in-browser.

Works in all modern browsers including Chrome, Firefox, Safari, and Edge. No plugins or extensions required. Privacy by design, not as a feature add-on.