How to Resize an Image

Upload your image by clicking or dragging it into the upload area.
Enter the target width or height. Enable the lock icon to maintain aspect ratio.
Select output format (JPG, PNG, or WebP) and adjust quality if needed.
Click Resize Image to process, then download the result.

Common Use Cases

Resize photos for social media profiles and cover images.
Reduce image dimensions before uploading to a website or CMS.
Create thumbnails from large photos for galleries and grids.
Match exact pixel requirements for email headers and banner ads.

Frequently Asked Questions

Does resizing lose quality?

Scaling down loses some pixel data — that is unavoidable. Scaling up (upscaling) does not add detail and can make images appear soft or pixelated. For best results, always start from the highest resolution source.

What does "lock aspect ratio" mean?

When the lock is enabled, changing the width automatically adjusts the height proportionally (and vice versa). This prevents your image from appearing stretched or squashed.

Is my image uploaded anywhere?

No. All processing uses the Canvas API directly in your browser. Your image never leaves your device.

What is the maximum output size?

Up to 16,000 × 16,000 pixels. Very large outputs may be slow on low-powered devices since the Canvas API processes them synchronously.

Common Standard Dimensions

Use these as reference targets when resizing for specific platforms:

Social Media Profile Photos

Instagram — 1080×1080 px (1:1 square; displays at 110×110 px)
Facebook — 180×180 px (displays at 170×170 px on desktop)
X / Twitter — 400×400 px minimum
LinkedIn — 400×400 px

Cover / Banner Images

X / Twitter header — 1500×500 px
Facebook cover — 851×315 px
LinkedIn company cover — 1128×191 px
YouTube channel art — 2560×1440 px

Web & Content Images

Open Graph / social share — 1200×630 px
Full-width hero banner — 1920×1080 px
Blog featured image — 1200×630 px
YouTube thumbnail — 1280×720 px
Email header — 600×200 px

Image Resizer