Image Resizer
Resize JPG, PNG, and WebP images to exact pixel dimensions in your browser — by exact size, by percentage, or by maximum dimension while preserving aspect ratio. No upload, instant download.Upload an image
Click to upload or drag an image hereJPG, PNG, WebP — runs locally
How to use the Image Resizer
Upload an image. Choose a resize mode. Pick output format and quality. Click Resize.Why this tool matters
Resizing before upload cuts page weight 10-30× and improves Core Web Vitals.Common use cases
- Blog post headers
- Product thumbnails
- Responsive design sizes
- Documentation screenshots
- Email signature images
- Social media crops
Aspect ratio: preserve vs distort
Exact mode lets you distort. Max width/Max height modes preserve aspect ratio. Percentage mode preserves aspect ratio automatically.Frequently Asked Questions
Will quality be acceptable? Browsers use high-quality bicubic resampling — visually indistinguishable from desktop software. Can I upscale? Yes but blurry. AI upscaling needed for real enlargement. Max size? Limited by browser memory. Handles 100-megapixel images. Transparent PNGs? Preserved. JPEG output makes transparency white.Need pixel-perfect content production?
Riman Agency builds content systems with rigorous image standards.
Talk to Content Ops