Blog

Research notes, encoder deep dives, and interviews from the world of image and video compression.

October 07, 2026 · Latest

Introducing Iris-AVIF

Iris-AVIF is our new AVIF encoder, and the best image encoder we know how to build. It sets a new frontier for how small a beautiful image can be.

Oct 02, 2026

Introducing wpd

Faster, safer WebP decoding for everyone.

Limitations of Perceptual Metrics

As encoders mature, metrics become less valuable.

Introducing fmetrics

Faster perceptual video and image fidelity metrics.

Same Image, Different Score?

Metrics don't just measure encoder performance; decoding matters too, and even after decoding, not all post-processing is created equal.

Introducing fcvvdp

A faster implementation of CVVDP, a perceptual video and image fidelity metric.

Measuring Image Encoder Consistency

Quality and speed define an image encoder's compression performance. Consistency is a close third, and easily overlooked in image encoder design. What value does it provide, and how can we measure it?

An Interview With Julio Barba

Julio Barba works on improving state of the art multimedia compression technology at Google. In this interview, Julio talks to Gianni about the future of multimedia compression, looking at AV2 and beyond.

Improving AVIF in Open Source

AVIF is a complex image format with a lot of potential. A significant amount of this potential was unlocked in 2024; Gianni Rosato, our founder and contributor to these efforts, details how this was done & talks about the future of modern image codecs on the Web.

Introducing Iris for WebP

Today we're excited to announce the Iris project, our in-house image encoder. We've begun work on Iris's first codec, Iris-WebP: A WebP encoder that brings impressive gains over the reference encoder.