JPEG, PNG, WebP, AVIF, or HEIC: Which Format Should You Upload?
The best upload is usually the original file. Here is what each supported format preserves and where conversions can quietly reduce quality.
Image formats
1 practical guide about image formats.
File format affects what provenance a file can carry and how much detail survives another encode. JPEG is compact but lossy; PNG is lossless; WebP and AVIF can be either compact or detail-preserving depending on settings; HEIC and HEIF often require conversion before a browser workflow.
The service accepts JPEG, PNG, WebP, AVIF, HEIC, and HEIF files up to 20 MB. A format conversion can remove some container metadata, but it does not reliably remove a watermark embedded in pixels. Use the guides below to choose an output, then verify the result instead of assuming the extension proves anything.