ガイド
SNS画像を不自然にトリミングせずにリサイズする方法
顔やテキストを切らずにSNS用画像を安全に調整する実践ガイドです。
あるSNSでは問題なく見えても、別のプレビューで欠けることがあります。重要要素を中央寄せにし、用途別サイズで書き出すのが安全です。
Start from a master image with extra edge space
If text or logos sit too close to the border, auto-cropping can cut them off.
Keep important elements away from edges before you make size variants.
Use target dimensions by placement, not one-size-for-all
Feed posts, stories, and link previews often use different aspect ratios.
Resize separately for each placement instead of forcing one export everywhere.
- Square or vertical for feed variants.
- Wide format for Open Graph/link previews.
- Story format for full-screen social placements.
Keep the focal point visible after resizing
Check faces, product shots, and CTA text first.
If content feels too tight, reduce text size or increase safe margins before final export.
Do a quick cross-platform preview check
Before posting, preview how the image appears in at least one feed and one link preview context.
A 30-second check prevents most cropping mistakes.
Save platform-ready versions clearly
Use consistent file naming so you always upload the correct version.
Simple labels like -feed, -story, and -og reduce mix-ups under publishing pressure.
Use this when
- Creating one campaign image for multiple social channels.
- Avoiding cut-off faces, logos, or CTA text in previews.
- Preparing feed and link preview images quickly.
- Building a repeatable social publishing checklist.
Design once, resize with safe margins
Start from a flexible source image, keep key content centered, and export per-platform sizes to avoid last-minute cropping surprises.