- How do I resize an image without losing quality?
- To minimize quality loss: downscale rather than upscale, keep the aspect ratio locked, use PNG format for graphics with sharp edges, and set the quality slider to 85–95% for photos. Our resizer uses high-quality bicubic interpolation for the sharpest results.
- What size should I resize my image for Instagram?
- Instagram recommended sizes: Square post 1080x1080px (1:1), Portrait post 1080x1350px (4:5, recommended), Landscape post 1080x566px, Story/Reel 1080x1920px (9:16), Profile picture 320x320px. Use our Instagram presets to resize in one click.
- Can I resize a PNG without losing transparency?
- Yes. Our tool preserves the alpha channel (transparency) when resizing PNG images. Make sure to select PNG as the output format — if you export as JPG, the transparent areas will be replaced with a white background.
- What is the best image size for a Facebook cover photo?
- The recommended Facebook cover photo size is 851x315 pixels. For optimal display on both desktop and mobile, use our Facebook Cover Photo preset. Event covers should be 1920x1005 pixels.
- Is it safe to resize images online?
- Our image resizer processes everything in your browser using the Canvas API. Your images are never uploaded to any server, ensuring complete privacy. No data leaves your device — it is 100% client-side processing.
- What is the difference between resizing and compressing an image?
- Resizing changes the pixel dimensions (width and height) of an image. Compressing reduces the file size by adjusting quality or removing metadata without changing dimensions. You can do both: resize to smaller dimensions AND lower the quality slider to reduce file size further.
- What image formats are supported?
- Input: JPG/JPEG, PNG, WebP, GIF, BMP, and TIFF. Output: JPG (smallest file size), PNG (lossless with transparency), or WebP (modern format with best quality-to-size ratio).
- How do I resize an image for a passport photo?
- US passport photos should be 600x600 pixels (2x2 inches at 300 DPI). Use our 'Passport Photo (US)' preset under Common Sizes for one-click resizing. For other countries, enter the required dimensions manually.
- Can I resize an image to a specific file size like 100KB?
- While this tool resizes by dimensions, you can reduce file size by: lowering the quality slider (try 60–70%), choosing JPG or WebP format, and reducing dimensions. The file size preview updates after each resize so you can dial in your target.
- What is the best image size for website performance?
- For websites: use 1920px max width for full-width hero images, 800–1200px for content images, 400–600px for thumbnails. Convert to WebP format for 25–35% smaller files. Always resize to the exact display size — never serve a 4000px image that displays at 800px.
