Everything you need to know before converting your first image.
Are my images uploaded to a server? +
No. Every conversion runs 100% in your browser using the Canvas API. Your files never leave your device — no server, no storage, no tracking. The tool also works offline after the first page load.
Is there a file size limit? +
No hard limit. The practical ceiling is your device's available RAM. Files up to 50 MB work smoothly on most modern laptops and phones.
Can I convert multiple images at once? +
Yes. Drop as many images as you need in one go. Each file gets its own download button. Once all files are converted, a Download All as ZIP button appears so you can grab everything at once.
Which format should I use for my website? +
WebP is the best choice for most websites — excellent compression, great quality and supported in all modern browsers. Use AVIF for maximum compression. Keep PNG for logos and transparent images.
Does the quality slider affect PNG? +
No. PNG is a lossless format so the quality slider has no effect on PNG output. The slider only applies to JPG, WebP and AVIF which use lossy compression.
Can I resize images during conversion? +
Yes. Enter a width, height or both in the resize fields. If you enter only one dimension the other scales proportionally to preserve the aspect ratio. Leave both blank to keep the original size.