Image Resizer
Exact canvas without crop using fit-in + fill (border) and optional upscale.
Resize
Preview / Final
Exact 512×512 & 1000×500 — How it works
With Imagor/Thumbor syntax, fit-in places the image inside the target without cropping. Then filters:fill(bg) pads the remaining area (acts like border/padding). filters:upscale() enlarges when needed for exact canvas.
About
This Image Resizer is for when you need a specific output size—fast. Set the exact width and height, pick how the image should fit, and export a ready-to-use file. It’s ideal for social media sizes, website images, app icons, listings, and any workflow where “almost the right size” causes layout issues.
Instead of guessing, you can use fit modes to control the outcome: keep aspect ratio and add padding, fit inside without cropping, or fill the whole canvas for a strict dimension. The preview makes it clear what will happen before you download. This is especially helpful when you’re preparing many images with the same target size.
Under the hood, resizing scales the image to a new pixel grid. If you upscale a small image to a larger size, it may look softer because you’re creating pixels that didn’t exist. For the sharpest results, start with a higher-resolution source when possible. For web delivery, formats like WebP or JPEG can reduce file size while keeping acceptable quality.
If you need transparent padding (for example for icons), export to PNG. If you’re resizing photos for speed, export to JPEG/WebP and adjust quality. Keep in mind that different platforms apply their own compression after upload, so leaving a bit of headroom can help preserve detail.
FAQ
›How do I resize without cropping?
›Why does upscaling look blurry?
›What’s a good size for social media?
›Which format should I choose?
›Does resizing change file size?
Related Tools
- Crop/tools/crop
- Filters/tools/filters
- PNG → WEBP/tools/png-to-webp
- JPEG → WEBP/tools/jpeg-to-webp
- WEBP → PNG/tools/webp-to-png