画像を反転 — 左右・上下
手順: ファイルを選び設定して書き出す。例: 色塊サンプルで確認。プロセスはブラウザ内のみでサーバー非送信。内容: flip/mirror photo H or V, download JPEG/WebP/PNG。目安 25MB/8192px。
使い方
Choose a photo, pick horizontal and/or vertical flip, apply, then download. Everything runs in this tab.
ルール
The canvas matches the source size. Horizontal flip uses scale(-1,1); vertical uses scale(1,-1); both can combine. Export re-encodes pixels.
- Horizontal: reflect across the vertical axis (left↔right).
- Vertical: reflect across the horizontal axis (top↔bottom).
- Both checked = 180° rotation equivalent for rectangular images.
- Animated GIF uses the first frame only; transparency is kept for PNG/WebP.
例
Load sample shows asymmetric color blocks with a mark; horizontal flip is applied so the mark moves to the other side.
向いている用途
- Fix mirrored selfies before posting.
- Swap left/right for layouts or mockups.
- Flip scanned pages that were upside-down (with vertical).
Frequently asked questions
Are images uploaded?
No. Decode, flip, and export run in your browser.
Is quality lost?
Flip itself is lossless in pixel order; saving as JPEG/WebP re-encodes and may change bytes.
Flip vs rotate?
Flip mirrors; rotate turns by angles. This page only mirrors.
Can I flip both ways?
Yes—tick both boxes to flip horizontally and vertically together.
What about animated GIFs?
Only the first frame is decoded and flipped.
Related tools
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