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Image Resizer

Set exact width and height in pixels, with aspect lock.

🔒 Processed on your device — nothing is uploaded.

About the Image Resizer

Every platform wants a different image size: a profile picture, a form upload, a banner or a thumbnail. The resizer sets an exact width and height in pixels, or scales by a percentage, and keeps the proportions locked so faces and products never look stretched.

When to use it

  • Resizing a photo to an exact size demanded by a job or exam application
  • Creating 1080 × 1080 images for social posts
  • Reducing a 4000-pixel camera photo to a sensible web size before uploading
  • Making a set of same-sized thumbnails for a gallery

Tips for the best results

  • Enlarging a small image will not add detail — use the Image Upscaler for that
  • Unlock the aspect ratio only when you deliberately want to squash or stretch an image
  • Save as JPG for photos and PNG for logos or screenshots with sharp text

How to use the Image Resizer

  1. Open the Image Resizer and drop your image (or tap to choose one).
  2. Adjust the options — the preview updates instantly.
  3. Press Download to save the result. Nothing is uploaded.

Image Resizer FAQ

How do I resize a photo to an exact size in pixels?

Enter the width and height you need. Keep the aspect lock on to avoid stretching; if the form demands an exact shape, crop first with the Aspect Ratio Cropper.

What is the difference between resizing and compressing?

Resizing changes the number of pixels (for example 4000×3000 to 1200×900). Compressing keeps the pixels but makes the file smaller. Resizing a large photo down usually shrinks the file a lot too.

Can I make a small image bigger without it getting blurry?

Plain resizing cannot add detail, so enlarged images look soft. Use the Image Upscaler, which uses AI to sharpen enlarged photos.

Which size should I use for social media?

Common sizes are 1080×1080 for square posts, 1080×1350 for portrait posts and 1080×1920 for stories and Reels.

Is the Image Resizer free?

Yes. The Image Resizer is completely free with no sign-up, no daily limit and no watermark.

Is it safe to use the Image Resizer with private files?

Yes. The Image Resizer runs entirely inside your web browser, so your files and text are never uploaded to any server.

Does the Image Resizer work on mobile?

Yes. It works in Chrome, Safari, Edge and Firefox on Android, iPhone, Windows and Mac.

Related guides

More images tools

Image CompressorShrink JPG, PNG or WebP files, optionally to a target size in KB. Image ConverterSwitch between JPG, PNG and WebP in one click. HEIC to JPGTurn iPhone HEIC photos into JPGs that open anywhere. Image UpscalerEnlarge images 2x, 3x or 4x with a sharpening pass. Background RemoverCut out the subject of a photo automatically, on-device AI. Image to Text (OCR)Read the text in a screenshot or photo. Favicon GeneratorBuild a full favicon pack (ZIP) from one image. Aspect Ratio CropperCrop to 1:1, 4:5, 9:16, 16:9 and more.