Custom dimensions, percentage scale, or one-click social media presets. Batch resize up to 10 images and download as a ZIP.
Stop googling "what size is an Instagram post." Just pick a preset and go.
Square format, perfect for feed posts. Works for stories too.
Profile banner image for your Twitter/X account.
The wide banner at the top of your Facebook page.
16:9 HD thumbnail that looks great across all devices.
More presets coming soon: LinkedIn banner, TikTok cover, Pinterest pin, and more.
Enter an exact width, height, or both. Aspect ratio is locked by default — unlock it to stretch to any shape.
Scale to 50%, 75%, 200% — any percentage of the original. Perfect for quick size reductions or enlargements.
Instagram, Twitter, Facebook, YouTube. Click the platform, upload your image, done. No guessing pixel counts.
Pick Custom dimensions, a percentage, or a social media preset. Set your target size.
Drag and drop or click to select. JPG, PNG, and WEBP all supported. Up to 10MB per image.
Each image shows original → new dimensions and file size. Download individually or grab all as a ZIP.
It depends on the mode. Resizing to a smaller dimension will reduce file size. Enlarging an image (e.g., 200% scale) will increase file size because there are more pixels. The result card shows you the before/after file size so there are no surprises.
When locked (default), if you enter only a width, the height is calculated automatically to preserve the original proportions. If you enter both width and height with the lock on, we use the width as the reference dimension. Unlock it to stretch to any exact WxH.
No. Images are processed in memory on our server and immediately discarded after the response is sent. We never write your images to disk or store them in any database.
It's free, instant, and works in your browser — no software to install. The social media presets alone save most people 10 minutes of googling "what size is a YouTube thumbnail." For batch work on the same target size, it's faster than any desktop app.
Free users can resize 5 images per day, with a cap of 20 tasks per month across all NexTools tools. Go Pro for unlimited resizes and unlimited batch processing.
No signup, no install, no waiting. Just upload and go.
↔️ Start Resizing Free