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Image Resizer
✓ 100% FREE — No Signup Needed
Resize any image to exact pixels or one-click social media sizes — YouTube thumbnail, Instagram post, TikTok, Facebook. Downloads instantly, images never leave your device.
Why resize images?
Oversized images slow down websites, get rejected by upload forms, and waste mobile data. Each platform also wants specific dimensions: a YouTube thumbnail must be 1280×720, an Instagram square post 1080×1080, TikTok vertical video 1080×1920.
This resizer handles it all inside your browser — your photos are never uploaded to any server. Pick a preset or type exact pixels, lock the aspect ratio to avoid stretching, choose PNG/JPEG/WebP output, and download. Bloggers, sellers and students use it daily to shrink photos for uploads.
Frequently Asked Questions
How do I resize an image to exact pixels?
Upload your image, type the width and height in pixels, and click Resize. Turn on "lock aspect ratio" to scale proportionally without stretching.
What size should a YouTube thumbnail be?
1280×720 pixels (16:9). Use the one-click "YouTube Thumbnail" preset above — it sets the exact dimensions for you.
Are my images uploaded to a server?
No. Resizing happens 100% in your browser using your device. Your images never leave your phone or computer, so it is completely private.
Is this image resizer free?
Yes. It is 100% free with no signup and no watermarks on your resized images.