ToolRecipe
Stays on this device No watermark Works offline

What do you need to get done?

Drop a file here

or .

/

Open an app

Follow a recipe

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Use one tool

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Image upscaler (AI)

Make a photo 2× or 4× bigger with an AI model (Real-ESRGAN) that draws in plausible detail instead of just stretching pixels. Drop in one image or many, drag the slider to compare before and after, and save. The model downloads once and your images are never uploaded.

How to upscale an image with AI

  1. 1Drop your images in, or click to choose them
  2. 2Choose 2× or 4× and the noise reduction
  3. 3Wait for the upscale, compare, then save
  4. A larger PNG, JPG or WebP, in the format you chose.

What happens to your files

  • Nothing is uploaded.The model runs in your browser. Only the model itself, about 5 MB, is downloaded once.
  • Compare before and after.A divider shows the original on one side and the upscaled image on the other.
  • Fast on a graphics chip.It uses the graphics chip when the browser allows it, otherwise the processor.

What you can do

  • Upscale 2× (double) or 4× (four times).
  • Pick the noise reduction: light keeps grain and texture, medium is the default, strong suits noisy or heavily compressed photos.
  • Save as PNG, JPG or WebP. Several images come as one ZIP.
  • Compare with the divider, and zoom between "Fit" and "Actual size".
  • Stop a running job, or upscale again with other settings.

Good to know

  • The model downloads once, about 5 MB, the first time you add an image.
  • The result can be very large: a 4× photo has sixteen times the pixels. If it would not fit, the tool offers 2× or shrinking the original first.
  • On the processor, and especially on phones, a big photo can take many minutes.
  • The model adds detail that looks right but was not in the original. Do not use it where exact detail matters.
  • If your browser cannot open a file, convert it to JPG or PNG first.

Questions

How is this different from resizing?

Resizing stretches the pixels you have, so the picture gets soft. The AI model estimates the missing detail, so edges and texture look sharper.

Does it upload my photo?

No. After the model has downloaded, everything runs on your device.

Why is it slow?

The model does a lot of work per pixel. A graphics chip is much faster than the processor, and 2× is much quicker than 4×.

Which size should I pick?

Start with 2×. Use 4× for small images, such as a thumbnail or an old photo.

Related tools

Recipes that use Image upscaler (AI)

A small or old photo, bigger and sharperUpscaleShrink2 steps

How it works

Small tools that run in your browser.

Four steps

  1. Start with a file or a task

    Drop a file, search, or pick a task.

  2. The tool opens in a window

    Open as many as you like, side by side as tabs.

  3. Results collect on the right

    Drag a result into the next tool.

  4. Save when you're done

    Saved files go to your downloads.

Who uses what

Tool sets for common jobs.

Put a tool on your home screen

The icon opens that tool, like an app.

iPhone and iPad

  1. Open the tool in Safari.
  2. Tap Share (the square with the arrow).
  3. Choose “Add to Home Screen”, then Add.

Android

  1. Open the tool in Chrome.
  2. Tap the menu (⋮) at the top right.
  3. Choose “Add to Home screen” or “Install app”.

Computer

  1. Open the tool in Chrome or Edge.
  2. Click the install icon in the address bar.
  3. Choose Install.

Skills

Claude skills we use ourselves, one job each.