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What do you need to get done?

Drop a file here

or .

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Open an app

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Use one tool

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Resize JPG

Resize JPG images online and free: type a width or a height in pixels, centimeters, millimeters or inches, and save. For forms that ask for a size like 3.5 × 4.5 cm, the DPI is written into the JPG too. Nothing is uploaded: your browser does the work.

How to resize JPG images

  1. 1Drop your images in, or click to choose them
  2. 2Type a width, a height, or both, and pick the unit
  3. 3Press "Convert" and save the result
  4. Resized images, as JPG unless you pick another format.

What happens to your files

  • Nothing is uploaded.Your images are read and resized by your browser, on your own device.
  • Ratio kept with one side.Fill in only the width or the height and the other follows.
  • Many at once.Add a batch, set one size, and get one ZIP.

What you can do

  • Fill in only the width or only the height, and the other side follows so the picture does not stretch. Fill in both and you get exactly that size.
  • Choose the unit: Pixels, cm, mm or Inches. For cm, mm and inches you also set the DPI, which starts at 200.
  • Under "Format" keep JPG or save as PNG, JPG, WebP or AVIF in the same step.
  • Set the quality, 30 to 100, starting at 85. A lower quality gives a smaller file.
  • Set a passport photo or print size: type centimeters or inches and the DPI, for example 300 for a print, and the JPG states that DPI.

Good to know

  • Percent is not offered: the size is a number of pixels, or a length with a DPI.
  • If you fill in both sides, the picture is scaled to exactly that size and can look stretched when the ratio differs.
  • Several files come back as one ZIP. JPG turns transparency white.
  • Resizing a JPG re-encodes it, so each pass costs a little quality. Resize from your original once.

Questions

How do I resize a JPG to a certain width?

Drop it in, type the width in the width field, leave the height empty and press "Convert". The height follows from the picture's ratio.

Can I set a size in centimeters?

Yes. Choose cm, mm or Inches as the unit and set the DPI. The JPG then states that DPI, which some forms and print shops read.

Can I resize many images at once?

Yes. Add them all, set one size, and you get one ZIP.

Related tools

Recipes that use Resize JPG

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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.