PHOTO NOTES
JPG, PNG or WebP: which photo format should you use?
Choose a format based on photographs, transparency and compatibility.
JPG for widely compatible photographs
JPG is commonly accepted by upload forms and photo services. Its compression removes information, so quality and file size are a tradeoff. Use the quality slider and inspect the exported result. Transparent pixels are composited onto white when exported as JPG here.
PNG when transparency matters
PNG retains alpha transparency and avoids JPEG-style compression artefacts during encoding. It suits graphics and images that need transparent edges. Photographs may become much larger. Converting a damaged JPG into PNG cannot undo the damage; it only avoids another JPEG encoding step.
WebP for compatible destinations
WebP supports transparency and lossy compression. It is useful for many web workflows, but check whether your destination accepts it. If the browser cannot encode the requested format, Photo Toolbox reports the problem instead of returning a PNG with a misleading extension.
Convert with clear expectations
Choose Convert Format, select your images and choose the output. PNG has no lossy quality slider. Quality affects JPG and WebP. Source metadata is not copied; orientation is rendered into the pixels and colour is converted through the browser’s sRGB canvas.
Know the supported inputs
This website accepts JPG, PNG and static WebP. It deliberately rejects animated WebP and does not accept HEIC, RAW, SVG, GIF or AVIF. The iPhone app has a separate HEIC conversion workflow. Keep originals when colour fidelity or archival metadata matters.