PDF Editor — Annotate and Modify PDFs in Your Browser
Open any PDF in ConverCell's browser-based editor to add text, highlight passages, draw annotations, and export the modified document — no software installation needed.
How to Use
- Open your PDF file Upload the PDF document you want to edit. The file loads in a canvas view inside your browser.
- Add text, drawings, or shapes Use the toolbar options to place text blocks, highlight areas, draw with a freehand brush, or add lines.
- Export edited PDF When you are done modifying, click 'Export PDF' to download the annotated document with all changes embedded.
Key Features
- Text Annotations — Place new text boxes anywhere on the document. Customize font size, alignment, and color easily.
- Freehand Drawing & Highlighter — Draw directly on pages to markup diagrams or highlight critical paragraphs using different stroke options.
- Multi-page Editing — Scroll through PDF pages, selecting individual pages to annotate and mark up dynamically.
Frequently Asked Questions
Q: Can I edit existing text inside the PDF?
A: Our editor allows you to overlay new text, draw annotations, add highlights, and markup pages. It acts as an annotation editor rather than a full text-reflow editor, making it perfect for signing forms, grading papers, and adding notes.
Q: Do my edits flatten into the PDF document?
A: Yes. When you export the PDF, all text overlays, drawings, and highlights are flattened into the PDF vector layer, meaning they will render identically on all devices and PDF viewers.
Q: Does the editor support password-protected PDFs?
A: Currently, you must remove password protection from your PDF before uploading it to the editor for drawing and annotations.
Secure & Private Document Processing
Your privacy is our absolute priority. All files uploaded to ConverCell are processed via secure SSL/TLS connections and automatically deleted from our servers immediately after processing. We do not inspect, retain, or share your document data under any circumstances.