Upscale Image

Enlarge your images 2×, 3×, or 4× with high-quality Lanczos interpolation. Free & private.

Drop your image here

or click to browse · PNG, JPG, WebP supported

How to Upscale an Image Online

  1. Drag and drop your PNG, JPG or WebP file into the upload area, or click it to browse your device.
  2. Choose 2x, 3x or 4x to set how much larger the output image should be.
  3. Click Upscale & Download. The tool uses high-quality Lanczos-style interpolation with mild sharpening to enlarge the image while minimizing blur.
  4. The upscaled PNG downloads automatically once processing finishes.

Want the full breakdown? Read our guide: AI Image Upscaling — How to Enlarge Photos Without Losing Quality

Frequently Asked Questions

How much can I upscale an image without losing quality?

2x and 3x upscales generally hold up well using the Lanczos-style interpolation this tool applies. 4x is the maximum offered here since pushing further starts to visibly soften fine detail.

What is Lanczos interpolation and why does it matter?

Lanczos is a resampling algorithm that estimates new pixels using a wider, smoother sampling window than basic bilinear scaling, which keeps edges sharper and reduces blur when enlarging an image.

Why does my upscaled image still look slightly soft?

Upscaling can only estimate new pixel detail from what already exists in the original — it can't invent information that was never captured. Starting from a higher-resolution or less compressed original will always give a sharper upscale.

Is upscaling the same as zooming in?

No. Zooming in just displays the same pixels larger on screen, which makes them blocky. Upscaling generates new pixel data to fill in a larger canvas, producing a smoother result.

Is my image uploaded to a server to be upscaled?

No. Upscaling runs entirely in your browser using the Pica.js resizing library (with a Canvas-based fallback) — your image never leaves your device.

Free AI Image Upscaler -- Enlarge Photos Without Blur

Upscale small or low-resolution images up to 4x using AI -- sharper edges, more detail, less blur compared to standard bicubic scaling. Perfect for old photos, product images, and graphics that need to print large. Runs in your browser, no account required.

Up to 4x Upscale

Double or quadruple the resolution of any image while the AI preserves edges and fine detail.

AI-Powered Sharpening

Neural networks fill in realistic detail rather than just blurring up the pixels.

PNG, JPG and WebP

Upload any common format and download the upscaled version as PNG or JPG.

Private and Free

No upload to a cloud service. Processing uses your browser's GPU via WebAssembly.

Frequently Asked Questions

How much can I upscale an image?

2x is reliable for most photos. 4x works well on simple graphics, product shots, and faces. Beyond 4x the AI starts inventing detail that was not there.

Is AI upscaling better than regular resizing?

Yes -- standard bicubic scaling blurs edges because it averages neighbouring pixels. AI upscaling predicts what the detail should look like from patterns in the training data.

Can I upscale a blurry photo?

AI upscaling sharpens by predicting detail, so mildly blurry photos improve noticeably. Heavily motion-blurred or out-of-focus photos improve less.

What is the best free AI image upscaler?

TinyPNG Now's upscaler runs in your browser for free with no signup or file limits. For professional upscaling, dedicated tools like Topaz Gigapixel AI offer more control but cost money.

Related guide: AI Image Upscaling: How Far Can You Go?