# ISO/IEC 18477-1:2020 — Withdrawn and superseded ISO standards

For ISO/IEC 18477-1:2020, item title is Information technology — Scalable compression and coding of continuous-tone still images — Part 1: Core coding system specification; status code is 9599; successor is ISO/IEC 18477-1:2024; withdrawn / published date is 2020-05-29, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 18477-1:2020 _(verified: appears in the quote below)_
- **Item title:** Information technology — Scalable compression and coding of continuous-tone still images — Part 1: Core coding system specification _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 18477-1:2024
- **Withdrawn / published date:** 2020-05-29 _(verified: appears in the quote below)_

## What the source says

> 79103,IS,,ISO/IEC 18477-1:2020,Information technology — Scalable compression and coding of continuous-tone still images — Part 1: Core coding system specification,Technologies de l'information — Compression échelonnable et codage d'images plates en ton continu — Partie 1: Spécification du système de codage de noyau,2020-05-29,2,['35.040.30'],ISO/IEC JTC 1/SC 29,9599,[62552],[86515],['en'],17,"<p>This document specifies a coding format, referred to as JPEG XT, which is designed primarily for continuous-tone photographic content. This document defines the core coding system, which forms the basis for the entire ISO/IEC 18477 series.</p>"

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).