Thumbnail Resizer & Safe Area
Resize with safe-area overlays and export JPG/PNG.
Tip: Your data stays in your browser.
Max ~10 MB. Your image stays in your browser.
Tip: Drag to move. Scroll or pinch to zoom. Double‑click to reset.
FAQs
- Do images leave my computer?No. Processing happens in your browser.
- What presets exist?YouTube 1280×720, Shorts 1080×1920, Instagram 1080×1080.
- How does safe area work?Guides show conservative margins for text readability.
- What formats can I export?JPG (quality slider) and PNG.
- Max file size?Up to ~10 MB recommended for performance.
Guides
YouTube Thumbnail Size and Ratio (2025)
Exact sizes and aspect ratios for YouTube, Shorts, and Instagram thumbnails — with quick presets.
Read →Safe Text Areas for Thumbnails (YouTube/Shorts)
Where to place text so it stays readable across devices. Includes conservative overlay guides.
Read →Convert 16:9 to 9:16 Without Cropping (ffmpeg)
Pad to vertical or crop intelligently. Copy-ready ffmpeg commands and when to use each.
Read →