# Deno v1.21.1 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v1.21.1
- **Released:** Apr 28, 2022
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v1.21.1/

## Executive Summary (TL;DR)
Deno v1.21.1. Source highlight: feat(ext/console): Add string abbreviation size option for "Deno.inspect"

## New Features
- feat(ext/console): Add string abbreviation size option for "Deno.inspect"
- feat(ext/http): stream auto resp body compression (#14345)

## Improvements
- perf(ext/http): fast path for uncompressed bodies (#14366)
- perf(ext/http): faster is_content_compressible (#14383)
- perf(ext/http): optimize ReadableStreams backed by a resource (#14346)
- perf(runtime): read entire files in single ops (#14261)
- perf(serde_v8): zero-copy StringOrBuffer (#14381)

## Bug Fixes
- fix(ext/console): Compact empty iterables when calling Deno.inspect with
- fix: change shade of "gray" color in eye-catchers (#14309)
- fix(bench): eliminate sanitizeExit overhead (#14361)
- fix(bench): report pending summary before clearing (#14369)
- fix(bench): reset reporter context (#14360)
- fix(cli): wrap long line of the env variables help (#14422)