SweetcraftImage format converter
Convert HEIC to JPG, WebP to PNG, or PNG to JPG locally, with background and quality controls.
About this tool
A general-purpose batch converter for the common image formats: it decodes PNG, JPEG, WebP and HEIC files and re-exports them as JPEG or PNG, with a background color and quality control where the format supports them. JPEG output flattens transparency onto the background you pick; PNG keeps the decoded pixels losslessly, though neither format can restore detail the source already lost.
Two audiences use it most: people with HEIC photos from an iPhone that other software refuses, and web workers standardizing a mixed folder of images before upload. Decoding happens on your device, including the HEIC decoder, which loads on demand; some HEIF profiles and very large images are unsupported and are reported per file.
How to use Image format converter
- Choose PNG, JPEG, WebP or HEIC images.
- Choose JPEG or PNG output. JPEG flattens transparency onto your selected background.
- Run the batch, inspect the actual exported previews, then download individual files or a ZIP.
Keep the original files and inspect the exported result before publishing or sharing it.
Frequently asked questions
Does HEIC always work?
HEIC decoding loads a local decoder on demand. Some HEIF profiles, sequences and large images are unsupported; failures are shown per file. Only one still image is exported.
Does converting preserve quality?
JPEG is lossy and removes transparency. PNG stores the decoded pixels losslessly but cannot recover detail already lost in the source. Color profiles and metadata are removed.