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Image Resizer

Resize images to exact pixel dimensions with high-quality downscaling. Set one dimension and let the other follow, or unlock the ratio for an exact box.

Add your images

Every file is resized with the same settings, so a whole set comes out consistent.

Up to 50 files at a time · nothing is uploaded, every image is processed on your own device

Settings

Fill in one dimension and leave the other blank to scale proportionally.

Smallest files at a given quality, and it keeps transparency.

82

80–85 looks identical to the original for most photographs.

New dimensions

Fill in one box and leave the other blank to scale proportionally.

px
px

Turn off to stretch to exactly the width and height above.

About resizing images

Resizing rebuilds the image at a new pixel size. Everything stays in frame — that is what separates it from cropping, which cuts pixels away at the edges.

It is also the most effective way to make a file smaller, because pixel count scales with the square of the dimensions: halving the width and height leaves a quarter of the data before compression is even discussed.

When this is the right tool

  • Camera files are far larger than the size they will actually be displayed at.
  • A platform states exact pixel dimensions and you need to match them.
  • A set of images needs to come out at one consistent size.
  • You need a different shape rather than a different size — that is a crop, not a resize.

How to use it

  1. Drop in the images

    JPG, PNG and WebP, mixed freely. Portrait and landscape files can be resized in the same run.

  2. Enter one dimension and leave the other blank

    With the ratio locked, the second value is calculated from each source image — which keeps a mixed batch consistent on the constrained edge rather than squashing everything into one box.

  3. Unlock the ratio only if you truly need an exact box

    Forcing a different shape distorts the picture. If the target shape differs from the source, crop to the ratio first, then resize.

  4. Resize and download

    Each row shows the original and final dimensions along with the file size. Multiple results arrive as one ZIP.

Formats and limits

Input
JPG, PNG and WebP.
Output
JPG, PNG or WebP at your chosen dimensions.
Scaling
One pass from the original rather than through saved intermediates, which is what keeps a downscale sharp rather than progressively softer.
Output ceiling
12,000 px on the longest edge. Browsers silently produce a blank canvas past their own area limit, so the tool refuses rather than handing you an empty file.
Metadata
Not preserved. Re-encoding through a browser canvas drops EXIF, IPTC and XMP — keep your originals if that information matters. What that involves.
Batch, limits and privacy
Up to 50 files per run at 50MB each, all processed with the same settings and returned as one ZIP. No watermark, no daily cap and no sign-up — and no upload either: every file is decoded and re-encoded by your own browser.

Common questions

How do I keep the proportions?

Leave 'Keep aspect ratio' on and fill in only one box. The other dimension is derived from it, so nothing is ever stretched. Filling in both with the ratio locked fits the image inside that box.

Can I resize to an exact width and height?

Yes — turn off 'Keep aspect ratio' and both numbers are honoured literally. Be aware that this distorts the image unless the box happens to match its ratio.

Can I make an image larger?

You can, but nothing is gained: enlarging past the original resolution invents pixels and softens detail. Resize down freely; resize up only when a platform demands a minimum size.

Guides on this

Longer answers to the questions this tool raises.

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