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All decoding runs in your browser with no uploads, no account, and no cloud queue.
A practical format guide
HEIF names the container format; HEIC is a common file extension used for HEIF images encoded with HEVC. Both can encounter the same compatibility problems.
Photo conversion stays on your device. Speed and batch capacity depend on the files, browser and available memory.
Drop iPhone Photos Here
Local conversion only.
All decoding runs in your browser with no uploads, no account, and no cloud queue.
At most three files are processed at once. Large images can still exceed your browser's available memory.
Export to JPG, PNG, WebP, or combine scans into one multi-page PDF.
Whether a file ends in .heic or .heif, the receiving app determines which replacement format is appropriate. JPG is the usual compatibility choice; PNG, WebP, and PDF serve different workflows.
HEIF stands for High Efficiency Image File Format and describes a container capable of holding images and related data. HEIC is widely used as the extension for HEIF content encoded with High Efficiency Video Coding.
For everyday troubleshooting, the important question is not which acronym appears in the filename. It is whether the destination can decode the file and which output it accepts.
A file extension is a label. Renaming photo.heic to photo.jpg leaves the original encoded data unchanged, so software expecting JPEG data can still reject it. A real conversion decodes the source pixels and writes a new file in the selected format.
Each completed preview now reports dimensions, input/output bytes and measured conversion time. Download the local conversion report to compare files without sending the report to this site. PDF timing covers image preparation, not final document assembly. Use the conversion verification checklist for metadata, quality and browser limitations.
If you want to stop creating HEIC files going forward, iPhone has a camera setting for that. Open Settings > Camera > Formats, then select Most Compatible to save new photos as JPG. If you already have a library of HEIC images, converting them to JPG or PNG is the fastest way to make them usable in older desktop apps, email attachments, and upload forms.