AI Image Upscaler
Increase image resolution 2x or 4x with Real-ESRGAN super-resolution directly in your browser.
ℹ️ About AI Image Upscaler
ToolBoxly AI Image Upscaler uses Real-ESRGAN super-resolution through ONNX Runtime Web. Instead of simply stretching pixels, the model reconstructs plausible fine details while enlarging the image. The image itself is processed locally in your browser; only the model/runtime assets are downloaded when needed.
🛠️ How to Use AI Image Upscaler
Upload a JPG, PNG or WebP image, choose 2x or 4x, then start AI Upscaling. The first run can take longer because the browser downloads and caches the model. Compare the original and result, then download the enhanced image.
📥 Input → ⚙️ Process → 📤 Result
Input
An image file
Process
Processes the image in your browser using the selected editing, conversion or enhancement settings.
Result
An edited, converted or enhanced image.
❓ Frequently Asked Questions
Is the AI Image Upscaler free?
Yes. No account or API key is required.
Are my images uploaded?
Your image is processed locally in the browser. The model/runtime files are fetched from public CDNs/model hosting on first use.
Can I upscale 2x or 4x?
Yes. 2x is useful when you want a moderate increase; 4x gives the largest enlargement.
What AI model does it use?
Real-ESRGAN general x4 through ONNX Runtime Web.
Will every image become sharper?
AI cannot recover information that was never captured. Clean low-resolution images generally produce better results than extremely blurry or compressed images.
Search use cases
This browser-based tool is useful for small photos, thumbnails, product images and graphics that need larger dimensions. Choose the right output settings for your specific requirement and review the result before replacing your original file. ToolBoxly focuses on simple, fast utility workflows without a required account.
Practical ways to use AI Image Upscaler
When you're working with images day to day — product photos, social posts, ID pictures, scanned documents — a browser tool like this removes the need to install and learn a desktop editor for a five-second task. The 4× setting works best on faces, product shots and text-heavy screenshots; very blurry or heavily compressed source images will upscale but stay soft. Everything above runs locally in your browser tab — the file you choose is not uploaded to a ToolBoxly server before you download the result, so there is nothing to wait on beyond your own device's processing speed. If you plan to use the result somewhere else — a client deliverable, an app store listing, a printed page — keep a copy of your original file and double-check the output against that destination's specific requirements before you rely on it.