Wyvek

Image Resizer

Resize images by pixels or percent.

Drag & drop an image here, or use the button above.

Everything runs locally — your image is never uploaded.

Free online image resizer

This image resizer lets you change the pixel dimensions of any photo or graphic and download the result in seconds. Load a file, type the width and height you need — with the aspect ratio locked so nothing looks stretched — then choose a format and hit resize. The image is redrawn on an HTML canvas right inside your browser, so it is never uploaded to a server and stays completely private on your device.

How to resize an image

  1. Click Choose an image, or drag and drop a file onto the drop zone.
  2. Check the original width, height, and file size that appear.
  3. Enter a new Width or Height — the other updates automatically while the ratio is locked.
  4. Pick an output format (and quality for JPEG or WebP), then click Resize image.
  5. Preview the result and click Download to save it.

Choosing dimensions and format

Shrinking an image keeps it crisp, while enlarging it beyond the original size can look soft. For photos, JPEG or WebP with a high quality setting gives small, sharp files; PNG is best for logos and screenshots with hard edges or transparency. If your goal is a smaller file rather than smaller dimensions, our image compressor squeezes files down without changing their size.

Private and free

There is no sign-up, no watermark, and no upload — every step happens locally. Need to embed a small image directly in your HTML or CSS instead? Try the image to Base64 converter, which also runs entirely in your browser. Bookmark this page for the next time you need a quick, reliable resize.

Frequently asked questions

Are my images uploaded to a server?

No. This resizer runs entirely in your browser using an HTML canvas. Your image is loaded, redrawn at the new size, and offered for download all on your own device — it is never uploaded, stored, or shared, which makes it safe for private or unpublished graphics.

Will resizing reduce the quality of my image?

Making an image smaller (downscaling) keeps it looking sharp. Making it larger (upscaling) stretches the existing pixels, so the result can look soft or blocky — a tool cannot invent detail that was not in the original. For photos, exporting as JPEG or WebP with a high quality setting gives the best balance of size and clarity.

Which output formats can I export to?

You can keep the original format or convert to JPEG, PNG, or WebP. JPEG and WebP support a quality slider and are ideal for photographs, while PNG is lossless and best for graphics with sharp edges or transparency. WebP usually produces the smallest files at a given quality.

How do I keep the aspect ratio?

Leave the “Lock aspect ratio” checkbox ticked. When it is on, editing the width automatically recalculates the height (and vice versa) from the original proportions, so your image never looks stretched. Untick it if you deliberately want to set an exact, non-proportional width and height.

Can I resize very large or high-resolution images?

Yes. Large images still work because everything is processed locally in your browser. Very high-resolution files may take a moment to load and redraw on older devices, but there is no file-size limit imposed by a server.

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