A free Topaz Gigapixel alternative that runs in your browser
Topaz Gigapixel is professional upscaling software. If you just need a sharper, larger version of a photo, our free AI upscaler does it in your browser with nothing to install and nothing uploaded. Here is how they compare and when the paid app earns its price.
Our honest verdict
Choose AI Image Upscaler if…
- You need a quick 2× or 4× enlargement of a small or blurry image
- You are preparing images for the web, social posts or slides
- You don't want to install or pay for software
Choose Topaz Gigapixel if…
- You print large formats or restore professional photography
- You work with very large files or hundreds of images at once
- You need face recovery and fine control over noise and sharpness
AI Image Upscaler vs Topaz Gigapixel at a glance
| Factor | AI Image Upscaler Free | Topaz Gigapixel |
|---|---|---|
| Price | Better here Free, with no limits on how many images you enlarge | Paid licence for the desktop application |
| Account required | Better here No account and no install | Purchase, installation and licence activation |
| Privacy | Image stays on your device | Also processes locally on your computer |
| Speed | Quick on small and medium images; faster still with WebGPU | Better here Uses your GPU and handles large files and batches faster |
| Maximum size | Longest side is limited to roughly 640–1600 px depending on your browser, so larger images are scaled down first | Better here Designed for very large images and big output sizes |
| Models and controls | One general AI model, 2× or 4× | Better here Several specialised models, face recovery, noise and sharpness controls, batch export |
Details about Topaz Gigapixel come from its public website at the review date above and may change. Check the vendor's site for current pricing and features.
AI Image Upscaler: strengths and limits
Pros
- Free, instant to open and nothing to install
- Transparent PNGs keep their transparency
- Uses a small 5 MB Real-ESRGAN model that your browser caches
- Your image never leaves your device
Limits to know about
- Browser memory caps the input size, so very large images are scaled down first
- A single general model, so no specialised face or text modes
- No batch export
Is there a free alternative to Topaz Gigapixel?
For everyday enlargements, yes: the UltraTools AI Image Upscaler enlarges images 2× or 4× in your browser for free. Topaz is the better choice for very large images, batches and fine control.
Does AI upscaling add real detail?
AI upscaling predicts plausible detail rather than recovering lost information. It looks much sharper than a normal resize, but it cannot restore what was never captured.
Are my images uploaded?
No. The model is downloaded once and the work happens on your device.
Ready to try it?
AI Image Upscaler runs in your browser: no sign-up, nothing uploaded.
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Topaz Gigapixel is a trademark of its respective owner. UltraTools AI is not affiliated with or endorsed by Topaz Gigapixel. Names are used only to identify the products being compared.