Resize Image Online Free
Resize any image to exact dimensions instantly. No upload to server, no signup, no watermark. Supports JPG, PNG, and WebP.
Drop your image here, or browse
Supports JPG, PNG, WebP, GIF, BMP, AVIF — up to 50 MB
Frequently Asked Questions
How do I resize an image online?
Upload your image to the Smolpix resizer, enter your desired width and height (or choose a preset), and click Resize. Your image is processed instantly in your browser — nothing is uploaded to any server.
Can I resize images without losing quality?
Yes. Use PNG format for lossless resizing. For JPG and WebP, set the quality slider to 90-100% to maintain near-perfect quality. Downscaling always looks sharp; upscaling beyond 2x may introduce softness.
Is my image uploaded to a server?
No. Smolpix processes images entirely in your browser using the Canvas API. Your files never leave your device — making it completely private and secure.
What image formats are supported?
Smolpix supports JPG, JPEG, PNG, WebP, GIF, BMP, and AVIF input. You can output as JPG, PNG, or WebP.
What are common image sizes for social media?
Instagram Post: 1080×1080px, Instagram Story: 1080×1920px, Facebook Post: 1200×630px, Twitter/X Post: 1600×900px, LinkedIn Post: 1200×627px, YouTube Thumbnail: 1280×720px.
Can I resize to a specific file size in KB?
Yes. Resize your image to smaller dimensions, then use the quality slider to further reduce file size. For precise KB targeting, use our Compress Image tool which lets you fine-tune output size.
Need to resize thousands of images?
Smolpix bulk-optimizes your entire Webflow CMS — resize, compress, and convert to WebP/AVIF in one click.