PixelVault lets you resize an image locally in your browser — by exact pixel dimensions or by percentage — without uploading a thing. Resizing sounds simple, but doing it badly produces soft, jagged results. PixelVault downscales large images in progressive steps, which avoids the aliasing you get from a single hard resize and keeps edges clean and text readable.
Lock the aspect ratio and PixelVault fits your image neatly inside the dimensions you ask for, so nothing looks stretched or squashed. Prefer a specific canvas? Turn the lock off for an exact width and height. And when you just want the right size for a particular platform, one-click presets cover the sizes people actually need — Instagram posts and stories, YouTube thumbnails, Facebook and X/Twitter headers, LinkedIn banners, TikTok video, Pinterest pins, plus common web, avatar and thumbnail sizes.
You can resize a single image or a whole batch at once, then download everything together. It is a fast, private alternative to heavier online editors for the everyday task of getting an image to the right size.
How it works
Your image is decoded to a canvas and scaled with high-quality smoothing. For big reductions PixelVault halves the image repeatedly until it is close to the target, then does the final step — a technique that yields noticeably sharper results than resizing in one jump. The output keeps its original format wherever possible.
Why local processing matters
Resizing on your device is immediate and private. There is no waiting for an upload, and your original photo — which may contain metadata or personal content — never touches a server. It is ideal when you are preparing images on a slow or public connection, because nothing is transmitted.
Supported formats
- JPG — Resized and re-saved at high quality.
- PNG — Transparency preserved.
- WebP — Great for web-ready resized images.
Common use cases
- Resize photos to the exact dimensions a social platform expects.
- Create avatars and thumbnails at standard sizes.
- Scale images down for faster-loading web pages.
- Batch-resize a set of images to one consistent size.