Image Resizer
Resize images by pixels, percentage, or DPI. Includes presets, batch processing, and live preview. Free, runs in your browser.
Resize Images — Adjust Pixel Dimensions, Free in Your Browser
The Image Resizer changes the pixel dimensions of your images to any size you need. With aspect ratio lock, social media presets, and exact millimeter specs for passport photos. Everything runs locally in your browser.
Maintain Aspect Ratio
By default, the aspect ratio is locked — enter the width and the height is calculated automatically (or vice versa). This prevents distortion. You can unlock the ratio when you intentionally need different proportions.
German Application Photo: 35 x 45 mm
The German standard for application and biometric passport photos is 35 x 45 mm. At 300 dpi print resolution, this equals 413 x 531 pixels. The resizer offers a preset for exactly this size — upload your photo, select the preset, done.
Social Media Presets
- LinkedIn profile — 400 x 400 px
- LinkedIn banner — 1584 x 396 px
- Instagram post — 1080 x 1080 px (square)
- Instagram story — 1080 x 1920 px (9:16)
- Facebook cover — 820 x 312 px
- Twitter/X header — 1500 x 500 px
Common Use Cases
- Crop and scale application photos to 35 x 45 mm
- Prepare profile pictures for social media platforms
- Uniformly resize product photos for online shops
- Shrink images for presentations or documents
- Generate thumbnails and preview images
Privacy
Your image never leaves your computer. Resizing happens locally in your browser using the Canvas API. No upload, no server, no cloud.