With so many image formats floating around, it's easy to treat "convert this image" as a single generic task. In practice, the right conversion depends entirely on where the image is going and what it needs to preserve.
When you're moving away from HEIC
iPhones default to saving photos as HEIC, a format that compresses well but that plenty of older software, websites and Windows tools still don't open reliably. Converting to JPG with HEIC to JPG fixes compatibility instantly without a visible quality hit for most photos.
PNG and JPG solve different problems
JPG is built for photos — smooth gradients, lots of color variation, no need for transparency. PNG is built for graphics — flat colors, sharp edges, optional transparency — and tends to bloat when used for photos it wasn't designed for. PNG to JPG and JPG to PNG cover switching either direction depending on which the content actually calls for.
WebP is smaller, but not everything wants it yet
WebP typically produces noticeably smaller files than PNG or JPG at equivalent visual quality, which is why most modern websites use it — but some older CMS platforms, email clients and design tools still don't accept it as an upload. PNG to WebP, WebP to PNG, JPG to WebP and WebP to JPG cover moving in whichever direction the destination actually requires.
GIF and BMP still turn up in older files
GIF's compression is poor for anything that isn't a small animation or simple graphic, and BMP is essentially uncompressed — both still show up in older exports, legacy systems and scanned documents. GIF to PNG and BMP to PNG convert either into a modern, reasonably-sized format without needing specialized software.
All of these conversions happen locally in your browser using canvas-based re-encoding — nothing is uploaded, and there's no batch limit beyond what your device can comfortably handle.
