Is PDFFlare's PDF editor really free?

Yes, 100% free with no signup, no watermarks, and no task limits. Edit as many PDFs as you want, as many times as you want. There are no hidden fees or premium restrictions on the editor.

Are my PDF files uploaded to a server?

No. PDFFlare's PDF editor runs entirely in your browser using JavaScript. Your files never leave your device — they are not uploaded, stored, or processed on any server. This makes it the most private PDF editor available online.

Can I edit existing text in a PDF?

Yes. Use the 'Edit Text' tool to click any text in your PDF and retype it. Under the hood, the original text is covered with a white overlay and your new text is drawn on top — the same reliable approach used by most browser-based PDF editors. This works best with standard fonts (Helvetica, Times, Courier). For PDFs with embedded or non-Latin fonts, results may vary.

What can I add to my PDF?

You can add text (with custom fonts, sizes, and colors), images (JPG, PNG), shapes (rectangles, circles, lines, arrows), freehand drawings, text highlights, and whiteout overlays to cover or replace content.

Will editing affect the PDF quality?

No. The editor preserves the original PDF content and adds your changes as a layer on top. All existing text, images, fonts, and formatting remain completely untouched. The output file maintains the same quality as the original.

What is the maximum file size supported?

The editor supports PDF files up to 100 MB. Since all processing happens in your browser, performance depends on your device's memory and the number of pages. For best results on mobile devices, keep files under 30 MB.

Does the PDF editor work on mobile devices?

Yes. The editor is fully responsive and works on phones and tablets. The toolbar adapts to smaller screens, and you can use touch gestures to interact with the canvas.

Can I undo changes in the PDF editor?

Yes. The editor includes full undo and redo support. Press Ctrl+Z (Cmd+Z on Mac) to undo and Ctrl+Y to redo. You can undo up to 50 actions. If you want to start over, simply reload the page.

Edit PDF Online — Free Browser-Based PDF Editor

Edit PDF files online for free. Add text, images, shapes, signatures, and annotations. 100% browser-based — your files stay private.

Edit PDF files online for free with PDFFlare's browser-based PDF editor — no signup, no watermarks, no software to install. Add text, images, shapes, highlights, and freehand drawings to any PDF document in seconds. Replace existing text, whiteout sensitive content, or annotate pages with arrows and notes directly in your browser.

Unlike most online PDF editors, PDFFlare never uploads your files to a server. Every edit happens locally on your device using JavaScript, which means your documents stay 100% private and editing works even without an internet connection after the page loads. Supports PDFs up to 100 MB with full undo and redo, zoom controls, and page navigation. Works on desktop, tablet, and mobile — the free online PDF editor that respects your privacy.

Drop your PDF file here

PDF files up to 100 MB

How to Edit PDF Files Online

Upload your PDF file
Click the upload area or drag and drop any PDF file into the editor. Files up to 100 MB are supported. Your PDF is processed entirely in your browser — no server upload needed.
Edit with powerful tools
Use the toolbar to add text, images, shapes, freehand drawings, highlights, and whiteout overlays. Click any element to move, resize, or delete it. Undo and redo any change instantly.
Annotate and mark up your PDF
Highlight important sections, draw attention with arrows and shapes, or cover sensitive content with the Whiteout tool. Every change stays on your device.
Save and download your edited PDF
Click 'Save & Download' to apply all changes and download your edited PDF. The original formatting, fonts, and quality are fully preserved in the output file.

Why Use PDFFlare's Free Online PDF Editor?

Add Text to Any PDF

Type new text anywhere on your PDF. Choose from multiple fonts, adjust size and color, toggle bold and italic. Perfect for filling in missing information or adding notes.

Draw Shapes and Annotations

Add rectangles, circles, lines, and arrows to highlight or mark up your PDF. Customize border color, fill color, and line width. Use freehand drawing for handwritten notes.

Highlight and Markup

Highlight text in yellow or any custom color to mark important sections. Use the Whiteout tool to cover sensitive content and replace it with new text.

100% Private — No Upload Required

Your PDF files never leave your browser. Unlike other online editors that upload files to their servers, PDFFlare processes everything locally using JavaScript. Maximum privacy guaranteed.

Frequently Asked Questions About PDF Editing

Merge PDF

Combine multiple PDFs into one

Split PDF

Separate into pages or ranges

Compress PDF

Reduce file size

PDF to Word

Convert to editable DOCX

Word to PDF

Convert DOCX to PDF

PDF to JPG

Extract pages as images