Image converter, JPEG, PNG, WebP & AVIF

No, not once. Every conversion happens entirely in your browser using the Canvas API. Your images never leave your device. That's why it's fast even on a mobile connection, there's no upload or download step, and why it's private, we literally can't see what you're converting. The only code running is the HTML page and a small (~30KB) ZIP library, both loaded from Velena Lifestyle's domain.

AVIF compresses images 50% smaller than JPEG by doing a lot more mathematical work per pixel, roughly 5-10x more CPU time. A 5MP photo that takes 100ms to encode as JPEG might take 1-3 seconds as AVIF. In a server-side build pipeline that's fine. In a browser, it means batch-converting 20 photos to AVIF takes 30-60 seconds. If you need to move fast, WebP gives you 90% of the file-size benefit at 10% of the processing time.

JPEG doesn't support transparency, so the transparent pixels have to be filled with something. Our tool defaults to white but lets you pick from black, cream, or our brand red. Without this step, most converters produce JPEGs with black backgrounds which is almost never what you want. If you need to preserve transparency, convert to WebP or AVIF instead, both support alpha channels.

JPEG, WebP and AVIF are all lossy formats at their default quality settings, meaning some information is discarded to save space. At 85% quality (the recommended setting), the loss is usually imperceptible except in side-by-side comparison. At 65-70% quality, you start to see subtle banding in smooth gradients. PNG is lossless, so converting to PNG never loses quality but the file sizes are huge. For most web use, 80-85% quality on WebP or AVIF is the sweet spot.

No hard limit on file size, but your browser has physical memory constraints. Very large images (20MP+) or batches of 50+ high-res photos can slow your browser down or cause it to crash on low-memory devices. For best results, keep batches under 20 files at a time and individual images under 10MB. If you need to process hundreds of images at once, you'll want a server-side tool instead.

No, the conversion process strips all EXIF metadata (camera model, GPS location, timestamp, editing history). For web use, this is almost always what you want · smaller files and no accidental sharing of your home address via GPS coordinates embedded in photos. If you need to preserve metadata for archival purposes, use a dedicated desktop tool like ImageMagick or Photoshop's "Save for Web" option.

AVIF encoding requires Chrome 85+, Safari 16+, Firefox 93+, or Edge 90+. If you're on an older browser, the AVIF option will be greyed out. Either update your browser or convert to WebP instead, you'll still get most of the file-size benefit (WebP is typically 25-35% smaller than JPEG vs AVIF's 50%). If you're on a corporate-managed device where you can't update, WebP is your best option.