Why image size decides your page speed
Oversized images are the #1 cause of slow pages. A 4,000-pixel photo exported at 5 MB can usually become a 1,500-pixel WebP file under 200 KB with no visible quality loss — that’s Core Web Vitals points and better search performance.
Ideal dimensions cheat sheet
- Blog hero image: 1,200 × 675 px (16:9)
- Featured/social share image: 1,200 × 630 px
- Instagram square: 1,080 × 1,080 px
- Instagram story / Reels: 1,080 × 1,920 px
- YouTube thumbnail: 1,280 × 720 px
- Website banner: 1,920 × 600 px max
JPEG vs PNG vs WebP
- JPEG: photos, 80–85% quality is the sweet spot
- PNG: logos, screenshots, anything needing transparency
- WebP: best compression for modern browsers — typically 30% smaller than JPEG
Resize without losing quality — 5 steps
- Start from the highest-resolution original.
- Resize to the exact display size (never larger).
- Export as WebP at 80–85% quality, or JPEG at 85%.
- Strip EXIF metadata to shave extra kilobytes.
- Always add alt text when you upload — it helps SEO and accessibility.
Do it privately, in your browser
Our Image Resizer processes everything locally — your files are never uploaded to a server, which matters if you edit client work or confidential images. For video creators, grab thumbnails with the YouTube Thumbnail Downloader.
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