ZScreenshot
Capture any viewport size without browser resize
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Hey HN!As a developer, I got frustrated with the screenshot workflow for documentation: Open DevTools → Set viewport size → Take screenshot → Switch tabs → Download → Open editor → Annotate → Save → Repeat...Built ZScreenshot - a sidebar extension that keeps everything in one place. Set viewport once, capture instantly, edit in sidebar. No tab switching, no DevTools.Free: • Custom viewport (consistent screenshot sizes, no sidebar interference) • Full-page capture (scrolling pages) • Tab recording with audio • Privacy-first (all local processing except authentication)Pro (14-day free trial, no credit card): • Image editor (arrows, shapes, text, blur, emoji - instant annotations) • Collection (merge multiple screenshots for comparisons) • Bulk ZIP download • MP4 exportEverything happens in the sidebar: Capture → Edit → Download → Access history anytime.Why no "select area before capture"? OS tools (Win+Shift+S, Cmd+Shift+4) already do this perfectly. ZScreenshot focuses on what they can't: viewport control, instant editing, history management. Plus, crop-after-capture gives more flexibility.Chrome Web Store: https://chromewebstore.google.com/detail/zscreenshot/jdgmjck...
HN · launched Jan 1, 2026 · 5 upvotes (top 90%) · 0 views
Niche: screenshot capture and mockup tools · 215 launches, 16 in the last 7 days ▼ -24% · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Developer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 215 launches in screenshot capture and mockup tools →
Could you build this?
Yes It is a browser extension using the `chrome.debugger` or `chrome.tabs.captureVisibleTab` APIs with Emulated Media/Device Metrics overrides to capture specific viewport sizes and run an image canvas editor.
Discussion
5 comments analyzed.
Competitors mentioned: Excalidraw for annotations
Concerns raised: Full page capture bug with sticky headers and lazy-loaded content, Infinite scroll and heavily JS-dependent dynamic content handling, Chrome Web Store review delays affecting bug fixes
Feature requests: More sophisticated annotation capabilities, Better handling of infinite scroll and dynamic content
Competitors
Other products that read as similar to this one : 614 launches clear the similarity bar, closest 8 shown.
Attention rank: #609 of 615 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 47 days after the earliest competitor.
- OpenScreenShot · ph · 2026-10-13 · 1 upvotes · similarity 0.58
- 4KShot · ph · 2026-09-16 · 1 upvotes · similarity 0.58
- FullSnapShot · ph · 2026-10-20 · 1 upvotes · similarity 0.58
- Scrolling Screenshot · ph · 2026-10-09 · 1 upvotes · similarity 0.57
- Z-Shot · ph · 2026-11-08 · 1 upvotes · similarity 0.56
- Orbshot · ph · 2026-09-24 · 2 upvotes · similarity 0.56
- Shot Prep · ph · 2026-10-07 · 2 upvotes · similarity 0.56
- Bezel · ph · 2026-09-09 · 1 upvotes · similarity 0.55
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.