Enlarge Images
Enlarge images 1.5× to 4× with high-quality Lanczos resampling and smart sharpening. JPG, PNG, WEBP. Free and private.
- Upload
- Options
- Download
- ✓ 100% free
- ✓ No sign-up
- ✓ No limits
- 🔒 Files never leave your device
How to: Image Enlarger
- Select images.
- Pick 2×, 3× or 4× and sharpening.
- Download the larger image.
Small images look blocky when printed or shown on large screens. The enlarger scales them up with high-quality resampling and sharpening, giving smoother results than a basic resize.
Common uses
- Enlarge small logos or icons for slides.
- Prepare small photos for printing.
- Increase resolution to meet minimum upload dimensions.
Tips for best results
- 2× gives the most natural results.
- Start from the best original available.
- Use PNG output for graphics and text.
Resampling explained
Lanczos resampling calculates new pixels from surrounding ones, producing smoother edges than simple pixel doubling, and gentle sharpening restores crispness. It works quickly in your browser without sending photos anywhere.
When to use it
Enlarging works best on reasonably sharp images that are simply too small – logos, icons, screenshots and web photos. Blurry or heavily compressed images stay blurry, just bigger.
Why use FreePDF for Image Enlarger?
| FreePDF | Typical upload-based sites | |
|---|---|---|
| Files uploaded to a server | No – processed on your device | Yes |
| Sign-up required | Never | Often for bigger jobs |
| Hourly / daily task limits | None | Common on free plans |
| Watermark on output | Never | Sometimes |
| Works offline after loading | Yes, for most tools | No |
Frequently asked questions
Is this AI upscaling?
It uses high-quality Lanczos-3 resampling plus sharpening – fast and private, but it cannot invent detail like heavy AI models.
Is this AI upscaling?
It uses high-quality Lanczos-3 resampling plus sharpening – fast and private, but it cannot invent detail like heavy AI models.
Is Image Enlarger really free?
Yes. Every tool on FreePDF is 100% free with no file limits, no sign-up and no watermarks. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. FreePDF processes your files directly in your browser using JavaScript. Your documents never leave your device, so they stay completely private.
Does it work on mobile?
Yes. FreePDF works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.