How does aspect ratio locking work?
When aspect ratio is locked, changing either width or height automatically updates the other dimension to prevent stretching or distortion.
画像サイズをオンラインで変更 — ピクセル・縦横比固定
Scale image dimensions in exact pixels or percentage with aspect lock.
Drop images here to resize
Scale dimensions by exact pixel measurements or percentage
画像プレビュー
使用方法 画像サイズ変更
1
選択してアップロード
Upload your photos or graphics into the resize stage.
2
設定とプレビュー
Enter target width or height, lock aspect ratio, or pick a percentage preset (50%, 75%).
3
処理とダウンロード
Click 'Resize Images' to resample and download your resized photos.
技術アーキテクチャとクライアント側のプライバシー
Processing Engine
Browser Canvas 2D & Binary Transcoder
Privacy Model
100% In-Memory Sandbox · Zero Server Uploads
Format Standards
PNG, JPEG, WebP, SVG, ICO Specifications
Execution Speed
Zero Network Latency · Instant Local Output
Frequently Asked Questions
Can I resize a batch of multiple images together?
Yes. You can scale an entire batch by percentage (e.g. 50% smaller) or to a common maximum bounding box.
Does resizing degrade image clarity?
IMGUtils uses multi-pass bicubic canvas resampling to retain maximum edge sharpness and minimize downsampling moire.