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Resize Image

Resize images to exact pixel dimensions with locked aspect ratio.

How to use

  1. Drop in your image - its current dimensions load automatically.
  2. Type a new width or height (the other side follows when the ratio is locked), or use the 25/50/75% presets.
  3. Click “Resize & download”.

Frequently asked questions

Will resizing reduce quality?

Shrinking keeps images sharp (we use high-quality resampling). Enlarging beyond the original size will soften details - no tool can add real detail back.

Does it keep the aspect ratio?

Yes by default - the lock keeps proportions so nothing looks stretched. Unlock it to set both sides freely.

Resize to exact pixel dimensions

Profile photos, marketplace listings, CMS uploads, print orders - they all demand specific dimensions, and resizing in a full photo editor is overkill. Enter a width, height or both, and get your image resampled to exactly those pixels with high-quality interpolation, in your browser, with nothing uploaded.

Aspect ratio locks by default: set one dimension and the other follows, so nothing gets squashed. Unlock it only when a form genuinely demands a fixed shape - and expect some distortion if the shape differs from your original, or crop first with our Crop Image tool for a cleaner result.

Enlarging vs. shrinking

Shrinking is essentially lossless to the eye - a 4000-pixel photo scaled to 800 pixels looks sharp everywhere. Enlarging cannot invent detail: going much beyond 1.5-2× the original size produces visible softness, because there's simply no data for the new pixels. If a form requires larger dimensions than your original, enlarge as little as possible.

The resized image downloads in the same format you provided, or you can switch format at the same time - resize a PNG screenshot down and export it as JPG in one pass to save the most space.

Common target sizes

Some dimensions come up constantly: 1920×1080 for full-HD wallpapers and video thumbnails, 1200×630 for social link previews, 1080×1080 for Instagram posts, 400×400 for most avatar fields, and 3.5×4.5 cm at 300 DPI (413×531 px) for many visa and ID photo requirements. Enter the pixels and you're done - and if the requirement is in kilobytes instead, that's exactly what our Resize Image by KB tool is for.

Related tools

  • Resize Image by KB — Hit an exact file size - 20 KB, 50 KB, 100 KB - for forms and portal uploads.
  • Image Converter — Convert images between JPG, PNG and WebP - one or many at a time.
  • Crop Image — Drag to select exactly the part of the image you want to keep.
  • Rotate Image — Rotate photos 90°, 180° or 270° without quality loss.
  • Flip Image — Mirror an image horizontally or vertically.
  • SVG to PNG — Render SVG vector files as PNG images at any resolution.

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