FIXLGSTOOLBOX
Image Convert

002 · IMAGE CONVERT

HEIC & AVIFImage Converter

Convert HEIC and AVIF images to JPG or PNG, or convert JPG and PNG images to AVIF in batches.
LOCALPROCESS IN YOUR BROWSER
WORKSPACEHEIC & AVIF conversion workspace

Drop images here

Add several files at once, or choose them with the button below.

Supported: HEIC, HEIF, AVIF, JPG, PNG
Up to 10 files, 10 MB per file, and 50 MB total.
Output Settings

Only valid output formats are available for each input type.

Quality

Add files to see valid output formats.

NEXT WORK

Next steps

001

JPG, PNG & WebP Converter

Available
004

Image Compressor

Coming soon·
006

Image Resizer

Coming soon·

HOW TO USE

How to use

  1. 01

    Choose HEIC, HEIF, AVIF, JPG, or PNG images.

  2. 02

    Review the output formats available for each file and choose a quality preset.

  3. 03

    Convert the images, then download files individually or together as a ZIP archive.

IMAGE FORMAT GUIDE

What to know before converting HEIC, HEIF, and AVIF

Use these guidelines when opening less compatible photo formats or preparing JPG and PNG images for efficient AVIF delivery.
HEIC & HEIFiPhone photos and efficient image storage

Stores high-quality photos at relatively small file sizes.

Some files may be unsupported because HEIF containers can use different codecs and auxiliary data.
AVIFEfficient web images

Offers strong compression for photos and transparent images.

Encoding can take longer, and HDR or wide-gamut colour may look different after conversion.
JPG & PNGCompatibility and editing

JPG suits widely compatible photos; PNG suits transparency and sharp graphics.

JPG cannot store transparency, and changing formats cannot improve source quality.

CONVERSION ROUTES

Choose the route by input format

HEIC·AVIFJPG

Prioritise compatibility

Use JPG for Windows, general editing software, and upload services. Transparent areas use the selected background colour.

HEIC·AVIFPNG

Preserve transparency and sharp edges

Transparency is preserved when possible, although photographic PNG files may be larger than JPG.

JPG·PNGAVIF

Prepare efficient web assets

The result may be smaller, similar, or larger depending on image content and quality settings.

CHECK BEFORE USE

Check before converting

01

Orientation and primary image

Photo orientation is applied to output pixels. For HEIC and HEIF, the tool converts one primary still image and excludes Live Photo video, depth data, and auxiliary images.

02

Transparency

JPG does not support transparency. Transparent AVIF or PNG areas are filled with the selected background colour when exported as JPG.

03

HDR and colour

AVIF files with HDR, 10-bit colour, or a wide colour gamut may look different after conversion to JPG or PNG.

04

Privacy and limits

Files are processed in the browser and metadata is removed by default. Safe limits are 10 files, 10 MB per file, and 50 MB in total.

FAQ

Frequently asked questions

01Are files uploaded to a server?+

No. Conversion runs in your browser, and files are not sent to the FIXLGS server.

02Are HEIC and HEIF the same format?+

HEIF is a container format, while HEIC commonly refers to HEIF images encoded with HEVC. Some HEIF files may use an unsupported internal codec.

03Can the tool convert iPhone Live Photos?+

It converts one primary still image only. Live Photo video, depth data, and auxiliary images are excluded.

Image files are processed in your browser and are not uploaded. Conversion code may be loaded from an external CDN.