Free Image Resizer | Resize Images Online

About This Tool

This image resizer lets you change the dimensions of any photo or graphic right in your browser. Upload an image, enter the new width or height, and download the resized version — all without sending your file anywhere. It's completely private and works offline once the page is loaded.

Common image sizes to know

Profile photos — most platforms use 400×400 or 500×500 pixels for profile pictures
Facebook cover — 820×312 pixels is the recommended cover photo size
Instagram posts — square (1080×1080), portrait (1080×1350), or landscape (1080×566)
Twitter/X header — 1500×500 pixels
LinkedIn banner — 1584×396 pixels
Email headers — typically 600px wide, height varies
Thumbnails — YouTube uses 1280×720, many blogs use 300×200 or 400×300

PNG vs JPG vs WebP — which should I choose?

PNG is best for images with text, logos, or graphics that need sharp edges and transparency. File sizes are larger but quality is lossless. JPG is ideal for photographs — it compresses well and produces smaller files with minimal visible quality loss. WebP is a modern format that offers better compression than both PNG and JPG, but it's not supported by all older software. For web use, WebP is an excellent choice if your platform supports it.

Frequently asked questions

Is my image uploaded to a server?

No. Your image is processed entirely in your browser using the HTML5 Canvas API. The file never leaves your device. This means it also works offline once the page has loaded.

Will resizing reduce the image quality?

Reducing an image (making it smaller) generally looks fine. Enlarging an image beyond its original dimensions (upscaling) will reduce quality — you may notice blurriness or pixelation. For best results, always start with the largest available version of the image.

Can I resize animated GIFs?

This tool resizes images using a canvas, which captures only the first frame of a GIF. If you need to resize an animated GIF while preserving the animation, you'll need a dedicated GIF editing tool.

Is there a maximum file size?

There's no hard limit set by this tool, but very large images (over 20MB) may process slowly depending on your device. Most standard photos and graphics resize quickly.