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Image Tools

AI Image Upscaler

Enlarge images by 2x or 4x using AI neural network enhancement or fast bicubic scaling. Start in your browser, compare before and after, and download from the same page.

Free in browser No sign-up required Files stay on your device
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Upload Image

Drop images here or click to upload

PNG, JPG, WebP supported — multiple files OK

Result

Upload an image to upscale it

Files processed locally — never uploaded
How it works

Run this tool in three short steps.

01

Upload your images

Drop or select one or more PNG, JPEG, or WebP images. Multiple files are supported for batch processing.

02

Choose scale and mode

AI Enhanced uses the Swin2SR neural network for sharp, detailed upscaling (5-30s). Fast mode uses bicubic interpolation for instant results.

03

Download upscaled images

For single images, drag the before/after comparison slider. For batch, download individually or all at once.

Questions

What people ask before they use this tool.

How does AI upscaling work?
AI Enhanced mode uses a Swin2SR neural network that runs in your browser via WebAssembly. It analyzes image patterns and generates more detail than simple stretching. Image data is processed in your browser during upscaling.
What is the difference between AI and Fast mode?
AI Enhanced uses a neural network for intelligent upscaling — it adds realistic detail and sharpness. Fast mode uses bicubic interpolation (simple pixel stretching) which is instant but produces blurrier results. AI mode takes 5-30 seconds depending on image size.
Can I upscale multiple images at once?
Yes! Select multiple files at once or add more after the first upload. Each image is processed sequentially with per-file progress. You can download results individually or all at once.
Why does AI mode take longer?
The AI model processes your image through a neural network with millions of parameters. First-time use downloads a ~20MB model file (cached for future use). After that, processing time depends on your image size and device performance.
What scale options are available?
Both 2x and 4x scaling are available in both modes. 2x doubles width and height (4x total pixels). 4x in AI mode applies the model twice for maximum quality.
What image sizes work well in AI mode?
AI mode works most smoothly with images under 1024x1024 pixels. Larger images are automatically resized before AI processing to keep browser performance reasonable. Fast mode can handle larger images too, though speed still depends on your device and browser.
What output format do I get?
You can download as PNG, JPEG, or WebP. PNG preserves quality without compression artifacts.
How is image data processed?
During upscaling, image data is processed in your browser and is not uploaded to our servers. That makes it easy to start the first enhancement task directly from the page.
Which image formats are supported?
You can upload JPEG, PNG, and WebP images. Output is available in PNG (lossless, recommended), JPEG (smaller files), or WebP. Choose the format that best fits your use case.
Does it work on mobile phones?
Fast (bicubic) mode works on all devices. AI mode requires significant memory and processing power, so it works more reliably on newer phones and desktops than on older or low-RAM devices. For a smoother AI workflow, start on a desktop browser when possible.
How does this compare to Topaz Gigapixel or Let's Enhance?
Topaz Gigapixel is paid desktop software with more advanced models. Let's Enhance uses a cloud workflow. This tool starts in your browser, so the first enhancement task is more direct and does not require installation. It is a better fit for quick 2x upscaling and lighter 4x tests.
Can I upscale and then compress the result?
Yes. Upscaled images can be large files. Run the result through our <a href="/compress-image">Image Compressor</a> or <a href="/image-converter">convert to WebP</a> to reduce file size while keeping the image ready for sharing.
When should I use AI upscaling?
AI mode is useful when you are enlarging small web images, thumbnails, or low-resolution photos and want a sharper result than bicubic scaling alone. For images that already start at a high resolution, Fast mode is often the more direct option.
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View all plans — from $9.99/mo 3 free uses/day, no signup

Coda One's AI Image Upscaler enlarges images by 2x or 4x using the Swin2SR neural network running in your browser. Compare before and after with the built-in slider, choose AI Enhanced mode for detail recovery or Fast mode for a quicker first pass, and download as PNG, JPEG, or WebP from the same page.

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