Image Resizer
Resize images to any dimension with custom sizes, social media presets, or percentage scaling. Export as PNG, JPEG, or WebP. Everything runs in your browser — no uploads to any server.
Drop an image here or click to browse
Supports PNG, JPEG, WebP, GIF, BMP, SVG
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Frequently Asked Questions
Is my image uploaded to a server?
No. All image processing happens entirely in your browser using the HTML5 Canvas API. Your image never leaves your device. You can verify this by using the tool with your internet disconnected.
Which output format should I choose?
PNG is best for images with transparency, screenshots, and graphics with sharp edges. JPEG is ideal for photographs and produces smaller files at the cost of some quality. WebP offers the best compression with good quality and is supported by all modern browsers.
What is the maximum image size?
There is no hard limit, but very large images (over 50MP) may cause your browser to slow down or run out of memory since all processing happens client-side. For best performance, the output dimensions should be under 10,000 x 10,000 pixels.
What do the social media presets include?
The presets include optimal dimensions for Instagram posts (1080x1080) and stories (1080x1920), Twitter/X headers (1500x500), Facebook covers (820x312), YouTube thumbnails (1280x720), and common web sizes like HD and Full HD. Presets unlock the aspect ratio so the image matches the target dimensions exactly.