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Image Resizer

Change the size of any image in pixels or percent — with ready-made presets for social media.

  • Free
  • Files stay on your device
  • No sign-up needed

Quick presets

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Quick answer

Upload an image, enter the new width and/or height in pixels (or a percentage), keep aspect ratio ticked to avoid stretching, and click Resize images. Presets like Instagram post (1080×1080) and YouTube thumbnail (1280×720) fill in the sizes for you.

Resize by:
Pixels or percent
Aspect ratio:
Locked or free
Presets:
Instagram, Facebook, YouTube, X, LinkedIn
Batch:
Yes
Upload needed:
No
Price:
Free

Every platform wants a different image size. Our online image resizer makes it easy to hit the exact dimensions you need — for a profile picture, product photo, thumbnail or form upload — without opening Photoshop.

How to use Image Resizer – step by step

  1. 1 Upload imagesDrop your JPG, PNG or WebP files onto the tool.
  2. 2 Set the sizeType a width and/or height, choose a percentage, or click a preset.
  3. 3 Resize and saveClick Resize images and download the results.

Why use our Image Resizer?

Keep aspect ratio

Enter just the width (or height) and the other side is calculated automatically.

Social presets

One-click sizes for the most common posts, stories, covers and thumbnails.

High-quality scaling

Uses the browser’s high-quality smoothing for clean, sharp results.

Batch resizing

Resize several images to the same size in one go.

Common image sizes (2026)

PlatformRecommended size
Instagram square post1080 × 1080 px
Instagram / TikTok story1080 × 1920 px
YouTube thumbnail1280 × 720 px
Facebook cover1640 × 624 px
LinkedIn banner1584 × 396 px
Full HD wallpaper1920 × 1080 px

Platforms occasionally change their guidelines, so check the platform’s help centre for the latest specs.

Resize vs. crop vs. compress

Resizing changes the pixel dimensions of the whole picture. Cropping cuts part of it away to change the shape. Compressing reduces the file size without changing dimensions. For the smallest files, resize first, then run the result through our Image Compressor.

Frequently asked questions

How do I resize an image without stretching it?
Keep “Keep aspect ratio” ticked and enter only the width or height. The other side is calculated to match.
Can I make an image bigger?
Yes, but enlarging adds no real detail, so the image may look soft. For best results start with the largest original you have.
What happens if I enter both width and height with aspect ratio on?
The image is scaled to fit inside that box without distortion.
Is it free and private?
Yes. Resizing happens in your browser and nothing is uploaded.

Last updated November 2026 · Written and tested by the SmallEasyTools team.