How do I resize an image without losing quality?
Set the quality slider to 90–100% and choose WebP or PNG format. Avoid resizing up (making smaller images larger) as that reduces sharpness. For best results, always resize down from larger to smaller dimensions.
What size should I use for an Instagram post?
Instagram square posts: 1080×1080 px. Portrait: 1080×1350 px. Landscape: 1080×566 px. Stories and Reels: 1080×1920 px. Use our preset buttons to apply these in one click.
What pixel size is needed for a passport photo in India?
Indian passport photos require 35×45 mm at 300 DPI, which is approximately 413×531 pixels. Use the "Passport / Aadhaar" preset. For the file size requirement (typically under 50 KB), use our Compress tool after resizing.
What does "lock aspect ratio" mean?
When the aspect ratio is locked (chain icon is blue), changing the width automatically adjusts the height to keep the same proportions. This prevents your image from looking stretched or squished. Unlock it to set completely custom dimensions.
Can I resize a PNG without losing transparency?
Yes! Select PNG as the output format — PNG supports transparency (alpha channel). If you choose JPG, the transparent background will be filled with white.