Sign PDF
Add your signature to any PDF. Draw, type, or upload your signature and place it anywhere.
Edit PDF
Add text, images, drawings, and shapes to any PDF. Edit existing text and elements. Free, no signup, up to 200MB.
3 free operations remaining today
Drop your PDF here
or click to browse — up to 200 MB
How to Edit a PDF
Smart PDF Lab edits PDFs through a full visual editor in four steps.
- 1
Upload your PDF.
Drop your PDF or click Browse files to upload documents up to 200MB.
- 2
Use the editor toolbar.
Add text, images, shapes, or freehand drawings using the visual editor.
- 3
Edit existing content.
Click on existing text or elements to modify them directly.
- 4
Download the result.
Save your edited PDF directly to your device.
Why Edit PDFs With Smart PDF Lab
Smart PDF Lab is a complete PDF editor in your browser, with no software to download or install. Add text in custom fonts, sizes, and colors. Insert images, shapes, lines, or freehand annotations.
Edit existing text without recreating the document. Instead of many free editors, Smart PDF Lab edits both new and existing content. Files up to 200MB, no signup, no watermark, and no paywall on advanced editing features.
What the PDF Editor Supports
- Text — Add or edit text in any font with adjustable size, color, weight, and alignment.
- Images — Insert JPG, PNG, WEBP, and BMP files via drag-and-drop with free placement and resizing.
- Shapes — Draw rectangles, ellipses, lines, and freehand annotations with adjustable stroke and fill.
- Existing content — Edit text already in your PDF, preserving original formatting where possible.
All edits save directly to the output PDF without quality loss.
Frequently Asked Questions
Can I edit existing text in my PDF?
Yes. Smart PDF Lab edits both new and existing text. Click on any text element to modify, replace, or remove it directly.
Can I add images to my PDF?
Yes. Insert JPG, PNG, WEBP, and BMP images with drag-and-drop. Resize and position images anywhere on the page.
Are my edits saved automatically?
Edits save when you click Download. Files upload through HTTPS-encrypted connections, process on our servers, and auto-delete after download.