#mac
17 posts
September 16, 2026
Squoosh on Mac — what it's great at, why it can't open HEIC, and offline alternatives
Squoosh is the best free way to compress one image in a browser. But it can't decode iPhone HEIC photos, has no batch mode, and its CLI is archived. Here's when it fits and what Mac users switch to.
September 16, 2026
What is CRF in video compression? A practical guide for non-engineers
CRF is the single most useful knob in modern video encoding — but most guides explain it wrong. Here's what it actually does, with concrete recommendations.
September 16, 2026
视频压缩里的 CRF 到底是什么？给非工程师的实用指南
CRF 是现代视频编码里最有用的一个旋钮——但大多数教程把它解释错了。这篇讲它实际在做什么，附具体推荐参数。
September 16, 2026
Batch rename files on Mac without third-party apps
Every way to batch rename files on a Mac — Finder's built-in renamer, tested Terminal one-liners for sequential numbering and recursion, and when each one wins. No installs needed.
September 16, 2026
Mac 批量重命名文件完全指南——不装任何第三方软件
Finder 自带的批量重命名（替换文本、添加文本、格式化编号）+ 实测过的终端命令：zmv 干跑、printf 补零编号、去空格、递归子文件夹。每条命令都验证过。
May 17, 2026
WebP vs AVIF vs JPEG on Mac — when to use which (with real file-size numbers)
Three modern image formats, three different trade-offs. Here's a real-world test on Mac, with concrete recommendations for web, design, and archival use.
May 17, 2026
WebP vs AVIF vs JPEG：Mac 上到底用哪个（附真实文件大小测试）
三种现代图片格式，三种不同取舍。这是 Mac 上的真实对比测试，附给网页、设计、归档场景的具体推荐。
May 17, 2026
13 Mac & iOS apps, 0 subscriptions — my Obelisk portfolio in 2026
A solo developer's case for a portfolio of focused, one-time-purchase apps instead of one app with monthly billing. What's shipped, what's coming, and what's been hard.
May 17, 2026
macOS sips command — the complete guide (2026)
Every Mac ships with a fast, sandbox-safe image processor called sips. Resize, convert, compress, strip metadata, batch — without installing anything. Here's everything it can do.
May 17, 2026
macOS sips 命令完全指南（2026）
每一台 Mac 都自带一个又快又安全的图片处理器，叫 sips。可以缩放、转换、压缩、剥离元数据、批量处理——不用装任何东西。这里是它全部能做的事。
May 17, 2026
'iMessage attachment too big' — how to fix it on Mac and iPhone
Why iMessage rejects your video, what the actual size limits are, and three ways to compress a video down to a working size — including a one-click Mac fix.
May 17, 2026
iMessage / 微信 视频太大发不出去？Mac 上 3 种压缩办法
为什么 iMessage 拒绝你的视频、各平台的真实大小限制（不是官方说的那样）、以及一键修复方案。
May 17, 2026
How to convert HEIC to JPEG on Mac in batch (4 ways, ranked)
iPhone photos are HEIC by default. Sending them to Windows, Android, or older web tools means converting. Here are the four practical ways on Mac.
May 17, 2026
How to compress an MP4 without losing quality (Mac, 2026)
"Visually lossless" is achievable. Here's the recipe — codec, CRF, preset — and how much smaller you can realistically expect.
May 16, 2026
How to compress video for Discord, iMessage, and email on Mac
Every chat app has a different upload limit, and every codec choice has a different trade-off. A practical guide to shrinking videos on macOS for the platforms you actually share to.
May 16, 2026
How to compress images on Mac without uploading them anywhere (2026)
A practical guide for shrinking PNG, JPEG, HEIC, and WebP images on macOS while keeping every byte on your own machine — with five real options compared.
May 16, 2026
Mac 上离线压缩图片的完整指南（2026）
5 款 Mac 图片压缩工具实测对比 — 不上传、不收订阅、支持 HEIC，从命令行到 GUI 全部走一遍。