We explain that Mac screenshots are large because macOS uses lossless PNG at full Retina resolution, with HDR metadata potentially adding more data. We provide typical PNG and JPG sizes, commands to switch defaults to JPG or HEIC, Preview and `sips` resizing/compression workflows, and a command to list the largest captures. JPG commonly reduces size by 60–80%; HEIC can be 40–60% smaller than JPG but is less cross-platform. LazyScreenshots costs $29 one time and supports PNG, JPG, WebP, compression, and one-keystroke auto-paste into Claude, Cursor, or ChatGPT.

[Why Are My Mac Screenshots So Huge? How to Shrink the File Size](<https://www.lazyscreenshots.com/blog/why-are-screenshots-so-big-mac/>)

Source observed: 2026-10-08T01:32:27.529Z. Last checked: 2026-10-29T01:54:21.707+00:00.

[Full page Markdown](<https://www.lazyscreenshots.com/pages/f4231b41-00eb-4223-99ab-fd6291ca6e28.md>)

Setup: lazyscreenshots\_checkout — Open the official LazyScreenshots checkout. The user reviews the price and completes payment in Stripe. Use this action only at your user's request. Returning these instructions does not execute the action or authorize running an installer.
GET https://www.lazyscreenshots.com/api/public/v1/convert
Required inputs: none

Review the current price and macOS requirements, then complete checkout on Stripe. Opening the link does not buy or install the app.

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```text
GET https://www.lazyscreenshots.com/agent/faq?q={question}&trace=t_111a4722d202
```