Image Upscaler

Enlarge images 2x, 3x, or 4x with smart scaling. Enhance details with optional sharpening. Free, private, all in your browser.

Smart bicubic scaling · Optional sharpening · All in-browser

About Image Upscaler

Increase image resolution up to 4x using AI-powered upscaling. Enhance details while reducing noise and artifacts. All processing happens in your browser — your images stay private.

Up to 4x Upscaling

Double or quadruple image resolution. Turn small thumbnails into usable high-res images with AI enhancement.

AI Detail Enhancement

Neural network upscaling that adds realistic detail, not just pixel interpolation. Sharper, cleaner results.

Noise Reduction

Automatically reduces noise and compression artifacts during upscaling. Cleaner output at higher resolutions.

Browser Privacy

AI model runs locally. No server uploads, no API calls, no account needed. Completely free.

📋 Common Use Cases

Print Quality Preparation

Upscale low-resolution digital photos to print-ready sizes at proper DPI for posters, canvases, or photo books.

Restoring Old or Small Photos

Enlarge vintage family photos or small web images to larger sizes while minimizing the typical pixelation and blur.

Social Media Thumbnail Enhancement

Upscale small profile pictures or thumbnails for use as larger featured images without visible quality loss.

Stock Image Enlargement

Increase the dimensions of stock photos or design elements that are too small for your project layout.

🪜 How to Use This Tool

  1. Upload your image
    Select a JPG, PNG, or WebP image you want to enlarge.
  2. Choose scale factor
    Pick 2x, 3x, or 4x enlargement depending on how much larger you need the output.
  3. Adjust sharpening level
    Use the sharpening slider to fine-tune edge definition in the upscaled result.
  4. Download upscaled image
    Preview the enlarged result and save it to your device at the new higher resolution.

📚 Related Guides

Frequently Asked Questions

Is this image tool really free?▼
Yes. Every image tool is completely free. No signup, no account, no payment. All processing happens in your browser.
Are my images uploaded to a server?▼
No. All image processing happens locally in your browser. Your images never leave your device. This is especially important for sensitive photos, IDs, and personal documents.
How does the AI background remover work?▼
It uses the @imgly/background-removal library running an IS-Net neural network entirely in your browser via WebAssembly. First use downloads a ~10MB model (cached for future visits). No image data is sent to any server.
What file formats are supported?▼
JPEG, PNG, WebP, SVG, GIF, BMP, and HEIC. Conversion between all formats is supported. AI features work on JPEG and PNG inputs.
What is the maximum image size?▼
Images up to ~4000x4000px process smoothly on modern devices. Very large images may be slower. For batch processing, up to 20 images at a time is recommended.