Resize images to exact dimensions
Preview width, height, and aspect ratio changes before exporting.
- Original: 1488 x 1086
- Output: 800 x 400
Resize photos for websites, social posts, thumbnails, profiles, and upload requirements.
Resize Image
Resizing changes pixel dimensions. Downscaling usually preserves visual quality well and reduces file size; upscaling invents pixels and can look soft unless enhancement is used carefully.
or drag and drop images here
Fast async jobs
No install required
Temporary files
Batch uploads
See what this tool changes
Accepted files
.png, .jpg, .jpeg, .webp
Output formats
same_as_input, jpg, png, webp
API endpoint
/v1/transform
Use this tool from your app
Submit files to /v1/transform, poll the job endpoint, then download outputs programmatically.
What it changes
Resizing changes pixel dimensions. Downscaling usually preserves visual quality well and reduces file size; upscaling invents pixels and can look soft unless enhancement is used carefully.
How it works
These tools should document exact parameters, whether pixels change, whether metadata changes, and how output format choices affect quality and file size.
Performance
Usually fast to moderate; cost grows with pixel count, output format, and whether re-encoding is required.
Best for
- preparing uploads
- normalizing image dimensions
- web delivery
- privacy cleanup
Limitations
- forensic preservation without originals
- unreviewed batch edits
- color-critical work without profile checks
Common artifacts
- unexpected cropping
- softness after resizing
- metadata loss
- color profile changes
Settings
slider
strength
Controls effect intensity where applicable.
boolean
strip_metadata
Removes metadata from generated output when supported.
FAQ
What settings matter for Resize Image?
The important settings are intensity or operation-specific parameters, output format, quality, and metadata handling.
Does resizing reduce file size?
Usually when downscaling, but output format and compression settings also matter.
What happens if I change aspect ratio?
The image will be stretched unless you crop or pad it to the target shape.
Should I upscale images?
Only when needed. Upscaling increases dimensions but does not create true original detail.
What size should I use for web images?
Use the largest display size needed, plus high-DPI variants if your frontend serves responsive images.
Is Resize Image free to use?
The public ImageHQ frontend is built for fast browser-based image jobs backed by compact async APIs.
Are uploaded files temporary?
ImageHQ jobs use temporary file retention for processing and downloads.
Related pages
References
Vips.Image.resize
libvips - library_documentation
High performance Node.js image processing
sharp - library_documentation
Using vipsthumbnail
libvips - library_documentation
libvips image processing library
libvips - library_documentation