AVIF to JBG Converter

Browser-based AVIF to JBG conversion — free to use

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Compatibility Bridge

AVIF offers cutting-edge compression but limited support — converting to JBG ensures your images work across all platforms and applications.

Any Device, Any OS

Run AVIF to JBG conversion on desktop, laptop, tablet, or smartphone. Works on every operating system with a modern web browser.

Cloud Processing

AVIF to JBG conversion runs entirely on Convertio servers — your device stays fast and responsive while the heavy lifting happens in the cloud.

How to convert AVIF to JBG

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose jbg or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your jbg file right afterwards

About formats

AVIF (AV1 Image File Format) is a modern image format derived from the AV1 video codec, developed by the Alliance for Open Media and specified in February 2019. The format leverages the intra-frame coding tools of AV1 — a royalty-free video codec backed by Google, Apple, Microsoft, Amazon, Netflix, and other major technology companies — to compress still images with substantially higher efficiency than JPEG, PNG, or even WebP. AVIF stores images in the HEIF (High Efficiency Image File Format) container, supporting both lossy and lossless compression, HDR (high dynamic range) with wide color gamuts up to 12-bit depth, alpha transparency, and animated sequences. At equivalent visual quality, AVIF files are typically 30-50% smaller than WebP and 50-70% smaller than JPEG, representing the largest compression improvement in mainstream image formats in over a decade. One advantage is exceptional compression efficiency — AVIF delivers visually indistinguishable images at dramatically lower file sizes, directly reducing bandwidth consumption and improving page load times for web content. The royalty-free licensing model provides another key strength: unlike HEIC/HEIF which relies on patent-encumbered HEVC, AVIF's AV1 foundation is free for anyone to implement without licensing fees. Browser support has reached broad adoption, with Chrome, Firefox, Safari, and Edge all rendering AVIF natively. The format is rapidly gaining adoption for web images where quality-to-size ratio is paramount.
Initial release: February 8, 2019
JBG is a file extension for images compressed using the JBIG (Joint Bi-level Image experts Group) standard, formally ITU-T Recommendation T.82, completed in 1993 as a successor to the Group 3 and Group 4 fax compression standards. JBIG compression is designed for bi-level (black and white) images but can also handle grayscale and limited-color images by encoding each bit plane separately. The algorithm uses a form of arithmetic coding guided by an adaptive context model: for each pixel, the encoder examines a template of surrounding already-coded pixels to build a probability estimate, then feeds this estimate to a QM-coder (a variant of the Q-coder arithmetic coder) that produces a highly efficient binary output. JBIG achieves 20-40% better compression than Group 4 on typical document images, with the improvement being even larger on halftoned photographs and images with gradual density transitions where Group 4's simple run-length approach is less effective. The standard supports progressive encoding, where a low-resolution version of the image is transmitted first and progressively refined — useful for fax-like applications where the receiver can begin displaying the image before the full-resolution data arrives. One advantage is superior compression of documents containing halftone images: newspapers, magazines, and marketing materials that mix text with photographic halftones compress dramatically better with JBIG than with Group 3/4. The standard's ITU-T backing ensures it is implemented in document imaging hardware and software worldwide. JBG files are supported by ImageMagick and various document imaging tools.
Initial release: 1993

Frequently Asked Questions

Why convert AVIF to JBG?

JBIG compression dramatically reduces file size for bi-level images — ideal when converting AVIF content to compact monochrome for fax or archival use.

What programs open JBG files?

Common options include specialized fax and document imaging software. The format has good support across major operating systems.

What happens to my uploaded files?

Your AVIF files are automatically deleted right after conversion. The resulting JBG files remain available for download for 24 hours, then they are permanently removed.

Is batch AVIF to JBG conversion available?

Absolutely — upload multiple AVIF files simultaneously and convert them all to JBG at once. Batch mode saves considerable time on repetitive conversions.

Can I convert AVIF to JBG for free?

Yes — Convertio offers free AVIF to JBG conversion. For professional volumes and larger files, premium plans provide expanded limits and priority processing.

Is the conversion process fast?

AVIF to JBG conversion usually finishes in a few seconds. Larger files may take slightly longer, but the cloud-based processing keeps things efficient.

AVIF to JBG Quality Rating

4.5 (77 votes)
You need to convert and download at least 1 file to provide feedback!