Make It Widescreen. Keep It All. Turn portraits, landscapes and covers into widescreen images without cropping the original content.
The developer wanted 16:9 artwork for YouTube music uploads and widescreen visuals, without cropping the original artwork. That is why this tool exists.
開發者為了 YouTube 音樂影片封面與橫向畫面，需要 16:9 的圖片，卻不願裁切原圖，因此製作了這款工具。
Auto (Recommended)
Uses one fixed bright, softly blurred background style. The output canvas expands to a 16:9 landscape ratio without cropping or scaling the original image. Default file encoding quality; there is no file-size targeting.
Manual
Adjust blur, brightness, shadow, format and optional KB target. Apply the preset to this image or all images after confirmation; editing the controls alone does not overwrite saved presets.
Export
One Code to All ON applies the shared code and hides individual codes. OFF preserves and shows each image code with its own copy button. Export does not edit saved presets. Use the image-side icon to download one, or the bottom bar to download multiple files or a ZIP.
Transparent images
Any detected transparency disables blurred background fill. The original stays centered on a transparent 16:9 canvas. Result is PNG, including if another format was selected.
Files and ZIP
Accepts JPG, PNG, WebP and static GIF. Animated GIF/WebP are not supported. Supports multiple files and a ZIP of static images. ZIP download includes successfully processed items only and reports failures.
File-size limits
A file-size target is best effort for JPEG/WebP and is not available for PNG. When the target cannot be achieved at the original resolution, that file is not exported; adjust the target rather than accepting a silently oversized result.
Privacy
All images are processed inside your browser, not uploaded to a server. Files are held in memory only until you clear them or close the page. Do not process sensitive content in untrusted browsers or extensions. Exporting through canvas may discard original embedded metadata.
Compatibility & limits
Designed for current Chrome/Edge and mobile browsers. Very large images or archives may exceed device memory; limits are applied to protect your browser. You may add up to 200 images, max 40 MB per image, 150 MB per input ZIP, 120 MB extracted contents, and 25 million source pixels per image. The 16:9 MVP also caps output at 25 million pixels and 10,000 × 5,625 pixels; oversized images are rejected rather than silently shrunk.