What is the HEIF format?

HEIF stands for High Efficiency Image File Format, a modern container standard developed by the MPEG group. Think of it as a smart wrapper that can hold not just a single photo, but entire collections of related images — photo bursts, focal stacks, depth maps, and even short animations — all compressed with state-of-the-art efficiency. HEIF is the technology behind Apple's HEIC photos: HEIC is simply a HEIF file that uses HEVC compression inside.

When should you use HEIF?

HEIF is ideal for modern photography workflows, especially on smartphones and mirrorless cameras that capture bursts, live photos, and depth information. It is perfect for archiving large photo libraries at the smallest possible size, and for professional work where you want to keep auxiliary data like depth maps alongside the main image. If your camera or phone can shoot in HEIF, adopting it as your storage format can dramatically cut the space your photo collection consumes.

Key benefits of converting to HEIF

The standout benefit is efficiency: HEIF stores roughly twice as much image quality per megabyte as JPEG, so your storage goes much further. Its container design is genuinely next-generation — instead of scattering bursts and depth data across dozens of files, everything lives neatly in one HEIF file. It also supports 10- and 12-bit color, transparency, and non-destructive edits like rotation and cropping stored as metadata rather than re-encoded pixels.

How to convert your images to HEIF

FlowTool converts your images to HEIF in seconds, completely free. Click Browse Files or drag up to 10 images into the upload area, then press Convert. The conversion happens right in your browser, and your high-efficiency HEIF files are ready to download immediately — no signup, no watermark, no software to install.

Tips for the best results

Convert from the highest-quality originals available to take full advantage of HEIF's superior compression. Be aware that older software and some websites cannot yet display HEIF files, so keep JPEG copies handy for broad sharing. For future-proof archiving of your most important photos at minimal file sizes, however, HEIF is one of the smartest formats you can choose today.