1. What does this tool do
This free online image viewer lets you view, zoom, rotate, and lightly edit images from your device—no app to install, no upload. Use it to view images or image viewer for JPEG, PNG, GIF, WebP, and SVG in a single- or multi-image gallery with thumbnails. Adjust brightness, contrast, and grayscale, then download the result as PNG. All processing runs in your browser so your photos stay private. Ideal for photo review, screenshots, design assets, batch preview, or simple edits.
2. How to use it
Quick start: Load one or more images (select or drag-and-drop), use thumbnails or arrows to switch, zoom and rotate as needed, adjust brightness/contrast/grayscale, then download as PNG. View metadata via Info.
- Load images — Select one or more image files, or drag and drop.
- Navigate — Use thumbnails or arrows to switch between images in a gallery.
- Zoom — Use zoom controls or scroll to zoom in and out.
- Rotate & flip — Rotate 90° or flip horizontally/vertically.
- Adjust — Change brightness, contrast, and grayscale with sliders.
- View metadata — Click Info to open a panel showing file name, format, dimensions, file size, MIME type, and last modified date for the current image.
- Download — Save the current image (with edits applied) as PNG.
3. How it works
Images are decoded by the browser's native image decoding. They are drawn to a canvas for non-destructive edits (brightness, contrast, grayscale). Transformations (rotate, flip) are applied via canvas or CSS. The gallery maintains a session limit (e.g. 200 images) to prevent memory exhaustion. All computation runs entirely in your browser. No data is sent to any server.
4. Use cases & examples
- Photo review — Quick view of photos before uploading.
- Screenshots — View and annotate screenshots.
- Design assets — Inspect and adjust images.
- Batch preview — Scroll through a folder of images.
- Simple edits — Brightness/contrast adjustments.
Example
- Load photo.jpg → Full image, zoom to 100%.
- Apply grayscale → Image displayed in grayscale.
- Rotate 90° → Image rotated; download saves the rotated version.
5. Limitations & known constraints
- 200-image cap — Session limit to prevent memory issues; most users load fewer.
- Browser decoding — Format support depends on browser (JPEG, PNG, GIF, WebP, SVG).
- Canvas edits — Brightness/contrast applied on export; may lose some precision.
- SVG — Complex SVGs may render differently across browsers.