Is the PDF editor really free?
Yes. Editing a PDF on PDFZento is free, and no account or signup is required.
PDF Editor
Edit PDF files online for free — right in your browser. Change existing text, highlight, underline, and draw with no upload and no signup.
or drag and drop your PDF here
Files are processed 100% on your device & never uploaded.
Edit PDFs Online for Free
Edit a PDF right in your browser — no software to install, no account to create, and nothing to download first. Open a file and start editing text, highlighting passages, and marking up pages immediately.
What can you do with this PDF editor?
- Edit text — click any line of selectable text and edit it in place.
- Highlight and underline — emphasize key passages and add underlines.
- Draw and add lines — sketch freely and place crisp lines over any page.
- Work on any device — pages fit your screen width on phones and tablets, with touch support for drawing and markup.
- Free and private by default — your file never leaves your browser, and there is no watermark on exported PDFs.
- Export instantly — download the finished PDF with your edits baked in.
Why use an online PDF editor?
An online editor lets you fix a typo, annotate a contract, or mark up a form without installing desktop software. Files on PDFZento are processed entirely on your device, so your document never has to be uploaded to a server to be edited.
Text editing works on digital PDFs that contain real, selectable text. Scanned PDFs are images, so use the OCR PDF tool to add a searchable text layer first — or keep highlighting and drawing right away, which work on any page. And if you need a fully editable Word document instead of a PDF, convert with the PDF to Word tool.
Private: 100% on-device PDF editing
PDFZento's PDF editor is built around one rule: your document never leaves your browser. The PDF is opened, parsed, edited, and rebuilt on your own device, and the only file you get back is the download after you click Export PDF.
- No uploads — your PDF is never sent to a PDFZento server.
- No account — editing is free with no signup or login.
- No watermark — exported files are clean, with no branding added.
- No data retention — nothing about your document is stored anywhere after you close the page.
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How to Edit a PDF
- Choose a PDF file or drag and drop it onto the card above.
- Select the Edit Text tool, click a line of text to change it, then save your edits.
- Mark up the page with the Highlight, Line, or Draw tool — these work on every page, including scans.
- Review your changes with Undo and Redo. Your original file is never modified.
- Click Export PDF to download your edited file. Nothing was uploaded or stored.
Frequently Asked Questions
Are my files uploaded to a server?
No. Your PDF is opened and edited entirely inside your browser — the parsing, editing, and PDF-recreation code all runs on your device. Nothing is uploaded, stored, or shared, and the finished file is only ever downloaded back to you.
Do I need to install any software?
No. The editor runs entirely in your web browser, so there is nothing to download or install first.
Can I edit a PDF on my phone or Mac?
Yes. The editor runs in any modern browser on desktop, macOS, iPhone, or Android. On phones and tablets, pages fit your screen width and the highlight, line, and draw tools work with touch.
Can I edit the text that is already in a PDF?
Yes. Select the Edit Text tool, click a line of text, and type to change it in place. This works on digital PDFs with real, selectable text. The edited PDF is recreated locally when you export it.
Can I edit a scanned PDF?
Scanned PDFs are images without a text layer, so there is no text for the Edit Text tool to select. You can still highlight, underline, and draw on them. To make the text editable, run the OCR PDF tool first to create a searchable text layer.
Does editing change my original file?
No. Your original PDF is never modified. Edits are applied to a copy held in your browser, and you download a new, edited PDF when you click Export PDF.
Is there a watermark on the exported PDF?
No. Exported PDFs are clean, with no watermark, branding, or footer added by PDFZento.
What else can I do besides editing text?
You can highlight passages, add underlines and lines, and draw freehand over any page. These markup tools work even on scanned PDFs where text editing is not available.
What PDF files can I open, and is there a size limit?
You can open a single PDF file up to 100 MB. Files are handled one at a time in the editor.
Why is editing done only on my device?
On-device editing is faster, free, and private by default. Because your document never leaves your browser, there is nothing to upload, no account to create, and no copy of your file kept anywhere after you close the page.
How do I edit a PDF in Word?
If you want a fully editable Word document instead of editing the PDF itself, convert the PDF to Word with PDFZento and make your changes in Microsoft Word.
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