---
title: "Bun v1.3.12"
url: https://daily.dev/posts/bun-v1-3-12-f5ph0rgqu
source_url: https://bun.com/blog/bun-v1.3.12
type: article
source: "Bun"
published: 2026-04-10T03:02:39.509Z
updated: 2026-04-10T03:03:09.432Z
tags: ["javascript", "performance", "automation", "bun"]
reading_time: 20
upvotes: 140
comments: 2
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Bun v1.3.12

**[Bun](https://daily.dev/sources/bun)** · 20 min read · 140 upvotes · 2 comments

## Summary

Bun v1.3.12 ships with a large set of new features and bugfixes. Highlights include native headless browser automation via Bun.WebView (WebKit and Chrome backends), terminal Markdown rendering with `bun ./file.md`, an in-process Bun.cron() scheduler, async stack traces for native errors, 2.3x faster URLPattern, 2x faster Bun.Glob.scan, cgroup-aware parallelism on Linux, TCP_DEFER_ACCEPT for Bun.serve(), HTTPS proxy CONNECT tunnel reuse, SIMD-optimized ANSI string utilities, upgraded JavaScriptCore engine with explicit resource management support, and over 120 bug fixes covering Node.js compatibility, memory leaks, crashes, and security issues.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://bun.com/blog/bun-v1.3.12>

## Community discussion

Top comments from developers on daily.dev.

**@nodirbekbokiev** · 1 upvotes

> Amazing process!

## Similar posts on daily.dev

- [Bun v1.3.11](https://daily.dev/posts/bun-v1-3-11-dug54q8tb) · Bun · 89 upvotes · 2 comments

---

Tags: [#javascript](https://daily.dev/tags/javascript), [#performance](https://daily.dev/tags/performance), [#automation](https://daily.dev/tags/automation), [#bun](https://daily.dev/tags/bun)

[View this post on daily.dev](https://daily.dev/posts/bun-v1-3-12-f5ph0rgqu)