Resize images to exact dimensions in your browser — the file never leaves your device.
Resizing an image is the most common image task there is — a photo that is too heavy for a form, an avatar that must be exactly 400 pixels, a banner for a specific slot. This tool does it with the browser's own canvas engine: the image is decoded, redrawn at the new size and re-encoded entirely on your device.
That local processing is a privacy guarantee, not just a technicality. Documents, photos of your family, unreleased artwork: none of it is uploaded to any server, because there is no upload. The page works even offline once loaded. It is also why the tool is fast — there is no round-trip, just your own hardware.
Quality-wise, the canvas uses high-quality interpolation when shrinking, which is the common case. Enlarging beyond the original size is possible but cannot invent detail — expect some softness, as in any resizer. Transparency in PNG sources is preserved; converting to JPG replaces it with a white background.
No. The whole process runs in your browser via the canvas API. You can disconnect from the internet after the page loads and the tool keeps working.
PNG, JPG and WebP as input; the output keeps the original format (PNG stays PNG with transparency, JPG lets you choose quality).
Dimensions up to 8000 pixels per side, to avoid exhausting browser memory. Larger files are refused with a clear message.
Usually yes — fewer pixels means less data. For JPG you can also lower the quality slider for an extra reduction.
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Vai.la is not responsible for how the tools are used or for decisions made based on their results.