How to edit a PDF
- Open a PDF from your device.
- Choose Add Text, Draw or Highlight.
- Adjust the color and text size, then click or drag on the page.
- Move between pages to add annotations where needed.
- Click Download Edited PDF to save a new copy.
Advanced PDF Editor
Add text, draw, highlight and place a signature image on PDF pages. Your PDF is processed in your browser; no paid API or account is needed.
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Open a PDF to start editing
Choose a PDF from your device. Use Add Text, Draw or Highlight to annotate the visible page.
Important limitations
- This is an annotation editor, not a full replacement for editing existing PDF text.
- It adds text and marks as overlays; it does not change the original text underneath.
- Very large PDFs can use significant device memory.
- Keep a copy of your original file and check the exported PDF before sharing.
PDF.js and pdf-lib are loaded from a public CDN. Internet access is required for the first load. No paid API key is required.