Resize Images Online — Custom Dimensions & Social Media Presets

About Resize Image

PandaToolz Resize Image lets you change the dimensions of your JPG and PNG images to exact pixel values or percentages. This is useful for preparing images for specific requirements — website headers, social media posts, ID photos, print layouts, or any situation where you need precise dimensions. The tool offers two modes. In Pixels mode, enter the exact width and height you need. An aspect ratio lock keeps proportions correct by default, so changing one dimension automatically adjusts the other. In Percentage mode, scale the image by any value from 1% to 500%, with convenient presets for common sizes like 25%, 50%, 75%, 150%, and 200%. The output dimensions are shown in real time so you know exactly what you will get before processing. The resize algorithm uses the browser's native Canvas API with high-quality interpolation. Downscaling produces sharp results for most practical sizes. Upscaling interpolates new pixels, which works well for moderate increases but can look softer at very large scales. The maximum output is 10,000 by 10,000 pixels. All processing happens in your browser — your image is never uploaded to any server. This makes the tool ideal for resizing personal photos, business graphics, or any images you want to keep private. The output format matches the input — upload a JPG, get a JPG back. There is no signup, no watermark, and the tool works on any device.