Drop image to resize
Scale pixel dimensions with aspect ratio lock
Supported:JPGPNGWebPGIF(Max 50MB)
Resize images by exact pixel dimensions or proportional percentages with locked aspect ratio constraints and bicubic interpolation.
Scale pixel dimensions with aspect ratio lock
Enter exact pixel width and height or scale proportionally using standard percentage presets.
Prevent accidental image distortion with automatic bi-directional aspect ratio locking.
Uses browser bicubic image smoothing to minimize pixelation and aliasing artifacts during downscaling.
Works entirely without internet once loaded; zero telemetry or file transmission.
The Softnag Image Resizer initializes an offscreen HTML5 Canvas context scaled precisely to your target pixel dimensions. When an image is rendered onto this destination buffer, the browser applies high-quality multi-pass downsampling algorithms.
Aspect ratio calculations are evaluated continuously: adjusting width immediately recalculates the corresponding height based on the original width/height divisor ratio, preventing unwanted stretching.
Once resized, the resulting canvas is converted into a downloadable Blob URL using your chosen output format (JPEG, PNG, or WebP) with zero quality compromise.
Resize banners for YouTube (2560x1440), Twitter (1500x500), and LinkedIn (1584x396).
Scale high-res portraits down to standard 400x400 square avatars without cropping crucial details.
Shrink company logos to crisp 150px widths for crystal-clear rendering in Outlook and Gmail.
Generate mobile (360px), tablet (768px), and desktop (1200px) versions of hero graphics.
Enlarging an image beyond its native resolution (upscaling) requires the browser to extrapolate pixels, which can cause softness. Downscaling, however, retains maximum sharpness.
Keep the "Lock Aspect Ratio" toggle active. Changing either the width or height will automatically recalculate the other dimension proportionately.
Softnag allows you to quickly load and resize images sequentially in seconds with instant local file saving.
Yes. Reducing an image from 4000x3000 down to 1200x900 reduces total pixel count by over 90%, resulting in a significantly smaller file.
Never. All resizing operations are executed strictly within your local browser context.
Keep the "Lock Aspect Ratio" toggle enabled so updating width automatically recalculates height proportionally.
Yes, you can scale dimensions upwards, though significant enlargement of low-resolution raster graphics may appear pixelated.