About the free image converter
Format problems are the most mundane kind of image problem: a form that only accepts JPG, a printer that rejects WebP, a Windows PC that cannot open an iPhone photo. This converter fixes them without the usual detour through an upload site. It decodes the image directly on your device, re-encodes it in the format you choose, and hands the file straight back. Nothing is uploaded, nothing is queued, and because no server does any work, nothing is metered: convert one image or five hundred, free either way.
Input formats cover everything you are likely to run into: JPG, PNG, WebP, AVIF, GIF, BMP, and HEIC. Output is JPG, PNG, or WebP, the three formats that open everywhere. For JPG and WebP you also get a quality slider, so a conversion can double as a size reduction when you need it to.
Converting iPhone HEIC photos in your browser
iPhones save photos as HEIC because it stores the same quality as JPG in about half the space. The catch is compatibility: Windows, older software, and most upload forms still expect JPG. Most HEIC converters online solve this by uploading your photos to their servers, which is exactly backwards for what are often personal pictures. This tool instead ships a small WASM build of the HEIC decoder to your browser and decodes the photo locally, so the conversion works offline and your photos stay yours. The decoder downloads only when you actually drop a HEIC file, so everyone else never pays for it.
Which output format should you pick
JPG is the universal answer: every app, form, and device on earth opens it, which makes it the right target for HEIC and AVIF photos that something refuses to accept. PNG is lossless and keeps transparency, making it right for logos, screenshots, and graphics that need crisp edges, at the cost of much larger files for photos. WebP sits in between: smaller than JPG at the same quality, supports transparency, and opens in every modern browser, making it the best choice for images headed to the web. If small file size is the actual goal rather than the format itself, the free image compressor can chase an exact target size for you.
Quality, metadata, and limits
Conversion re-encodes the pixels, so at 90 percent quality and above the result is visually identical to the source for photos. One side effect worth knowing: re-encoding does not carry over EXIF data, so the converted file arrives without camera details or GPS coordinates. If you want to strip metadata while keeping the original format and pixels untouched, the free image metadata remover does that losslessly. The converter handles images up to 64 megapixels on desktop (16 megapixels on iPhones and iPads), takes animated GIFs as stills of their first frame, and never watermarks anything.