Guide
Choosing the right image format
JPG, PNG and WEBP each solve a different problem. Converting between them can shrink files dramatically, fix "unsupported file type" errors on upload forms, or preserve transparency, and picking the wrong one can do the opposite. Here's how to decide.
JPG: the universal photo format
JPG uses lossy compression designed for photographs and is accepted by practically every device, app and upload form. It doesn't support transparency: when you convert a transparent PNG to JPG, the transparent areas become white. It's a poor choice for screenshots and text, where compression smudges sharp edges.
PNG: lossless and transparent
PNG keeps every pixel exactly and supports transparency, which makes it the right format for logos, icons, screenshots, diagrams and cut-out images. For photographs, PNG files are typically several times larger than JPG with no visible benefit.
WEBP: smaller files for the web
WEBP, developed by Google, supports both lossy and lossless compression as well as transparency, and usually produces files 25–35% smaller than JPG at similar quality. All modern browsers support it, which makes it ideal for websites. Some older software, email clients and government upload portals still reject it, so convert to JPG when you need maximum compatibility.
Common conversions
- PNG → JPG: shrink large photo PNGs for email or upload forms (transparency becomes white).
- JPG → PNG: needed only when an editor or form requires PNG. It won't improve quality and the file will be larger.
- JPG/PNG → WEBP: make website images load faster.
- WEBP → JPG/PNG: open images saved from the web in software that doesn't support WEBP.
Converting many files at once
You can add several images and convert them all in one go, then download them individually or together. Conversion happens in your browser, so even large batches of personal photos never leave your device, and the converted files don't carry over the originals' EXIF metadata.