Why can't this tool produce a HEIC file directly?

HEIC encoding relies on the HEVC video codec, which requires a licensed hardware or software encoder. Web browsers do not expose a HEIC encoder — they can decode HEIC on Apple platforms but cannot create new HEIC files. The only practical browser output is PNG or JPEG.

How do I convert TIFF to HEIC on a Mac?

Open the TIFF in Preview, choose File → Export, and select HEIC from the Format dropdown. You can adjust the Quality slider before saving.

How do I convert TIFF to HEIC on Windows?

Windows 11 can open HEIC files with the free HEVC Video Extensions from the Microsoft Store, but it cannot export HEIC natively. Use ImageMagick (magick input.tiff output.heic) or a third-party converter such as CopyTrans HEIC for Windows.

Will the PNG download look the same as the original TIFF?

For standard RGB / grayscale TIFFs the canvas render is visually identical. Very high bit-depth TIFFs (32-bit float) or CMYK TIFFs may be tone-mapped; the PNG will be an 8-bit sRGB approximation.

Is my file uploaded anywhere?

No. All decoding and rendering happens entirely in your browser using JavaScript. Your file never leaves your device.

What TIFF variants are supported?

UTIF.js handles the most common variants: uncompressed, LZW-compressed, PackBits, and Deflate-compressed single-page TIFFs. Very large multi-page TIFFs will render only the first page.

TIFF to HEIC Converter

Upload a TIFF image to preview it in your browser, then download it as a PNG — with clear guidance on converting to HEIC using desktop apps.

Upload TIFF Image

Drag & drop a TIFF file here

or click to browse (.tif, .tiff)

Choose TIFF File

Why no direct HEIC download?

HEIC encoding requires a licensed HEVC encoder. Web browsers cannot produce HEIC files — they can only decode them on supported platforms. This tool provides a lossless PNG download as the best browser-based alternative.

To get a real HEIC file:

macOS: Preview → File → Export → HEIC
ImageMagick: magick in.tiff out.heic
Adobe Photoshop: File → Export As → HEIC

Preview

Upload a TIFF file to see the preview here.

Summary

HEIC (High Efficiency Image Container) encoding is not supported in web browsers because the codec requires a licensed hardware encoder — only Apple's operating systems and a handful of native desktop apps can produce HEIC files. This tool lets you drop a TIFF image, renders it on an HTML5 canvas via the UTIF.js decoder, and offers a lossless PNG download as the practical in-browser alternative. To get a true HEIC file you will need a desktop converter such as macOS Preview, Adobe Photoshop, or a free tool like ImageMagick.

How it works

Click "Choose TIFF File" or drag a .tif / .tiff file onto the drop zone.
The UTIF.js library decodes the TIFF data entirely in your browser — nothing is uploaded.
The decoded pixel data is painted onto an HTML5 canvas so you can inspect the image.
Click "Download as PNG" to save a lossless PNG copy of the rendered image.
To obtain a HEIC file, use macOS Preview (File → Export), ImageMagick, or Adobe Photoshop.

Use cases

Quickly preview a TIFF from a scanner or camera without installing software.
Convert a TIFF to PNG as an intermediate step before desktop HEIC encoding.
Verify that a TIFF file is not corrupted before passing it to another workflow.
Share a web-compatible copy (PNG) of a TIFF with colleagues who lack TIFF viewers.
Check image dimensions and color data of a multi-layer TIFF before processing.
Batch-preview single-page TIFFs from a document management system.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu