Edit PDF Online
Add text, highlights, shapes, signatures and more — directly in your browser.
Edit your PDF
File up to 100 MB · Processed locally in your browser
Edit text directly in any PDF using your browser — click to modify fonts, sizes, and colors, or add new text boxes anywhere on the page. No software, no signup. Your file never leaves your device.
How to Edit a PDF Online
Open your PDF in the editor — drag it onto the page or click Choose PDF File.
Click any text on the page to select it. Edit the content, font, size, color, and alignment using the sidebar panel.
Use the Add Text button in the toolbar to insert a new text box anywhere on the page.
Click Download PDF when done — your edited file is ready instantly.
Why choose PDFCrush for how to edit a pdf online?
Edit any existing text — modify content, font, size, color, and alignment
Add new text boxes anywhere on any page of the document
Full undo history — press Ctrl+Z to step back through every change
Runs entirely in your browser — your document never leaves your device
Common use cases
Fix typos and errors in finalized PDF reports
Update contact details or dates in PDF templates
Add annotations or notes to PDF documents
Insert missing text into form fields not covered by fillable forms
Customize PDF certificates or letters before sharing
Redact or replace sensitive text in a document copy
Your privacy is protected
The editor runs 100% in your browser. No data is transmitted to or stored on any server.
Frequently asked questions
Can I edit the existing text content inside a PDF?
Yes. Click any text element on the page to select it. The sidebar panel lets you edit the content, font, size, color, bold, italic, and alignment directly.
Can I add new text that wasn't in the original PDF?
Yes. Use the Add Text button in the toolbar to insert a new text box anywhere on the page. You can position it freely and style it using the sidebar.
Will my edited text render correctly in PDF readers?
Yes. The editor embeds text using standard PDF text elements. The output opens correctly in Adobe Acrobat, Preview, Chrome, and other standard viewers.
Are my documents private and secure?
Yes. The editor runs entirely in your browser. Your PDF is never uploaded to any server — all processing happens locally on your device.
How do I undo a change?
Press Ctrl+Z (or Cmd+Z on Mac) to undo, and Ctrl+Shift+Z to redo. You can step back through every action in the current session.
Does editing modify my original file?
No. Your original file remains untouched on your device. When you click Download, a new PDF is generated with your edits applied.
Can I edit a multi-page PDF?
Yes. All pages of the PDF are rendered in the editor. Scroll down to reach subsequent pages and click any text element to edit it.
What PDF types are supported?
The editor works on standard digital PDFs. Text must be selectable (not scanned images) to be editable. For scanned PDFs, use our OCR PDF tool first to make text selectable.
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