Best for
- Resize large photos before uploading or sending.
- Create thumbnails, avatars, and product image variants.
- Scale images by exact dimensions or percentage.
TUXIA Tools
Image Resizer Workspace - TUXIA
TUXIA Image Resizer lets you change image width and height, scale by percentage, lock aspect ratio, and export PNG, JPG, or WebP images locally.
Width and heightLock ratioLocal export
Resize
Resize by width, height, or scale
Upload an image and enter the target size. When aspect ratio is locked, width and height update together.
Drag an image here, or click to choose a file
PNG, JPG, WebP, up to 10 MB
Quick scale
Tool Guide
Image Resizer Guide and FAQ
Resize images by width, height, or percentage directly in the browser. TUXIA keeps aspect ratio controls visible, provides quick scale presets, and exports the resized result for websites, profiles, product images, thumbnails, and documents.
imageresizerresizeimageonlinechangeimagesize
Image dimensions directly affect file size, load time, and how an image fits into a layout. A photo from a modern smartphone might be 4000 × 3000 pixels — far larger than needed for a website thumbnail or social media post. TUXIA's Image Resizer lets you specify exact width and height in pixels, or scale by a percentage of the original dimensions. An aspect ratio lock toggle ensures you do not accidentally stretch or squash the image when changing one dimension. Quick scale presets (25%, 50%, 75%) provide one-click shortcuts for common reductions. The resized image can be exported as PNG, JPG, or WebP. As with all TUXIA tools, resizing runs locally in your browser using the Canvas API — your original image never leaves your device.
Common Use Cases
Thumbnail and Preview Generation
Create consistent thumbnail sizes for product galleries, blog post listings, video covers, or image search results. A standard size (e.g., 300 × 300 or 400 × 300) ensures uniform layouts and faster page loads.
Social Media Profile and Cover Images
Each platform has recommended image dimensions: LinkedIn profile photos (400 × 400), Facebook cover photos (820 × 312), Twitter/X header images (1500 × 500). Resize your source image to the exact dimensions each platform expects.
E-Commerce Product Images
Online stores typically require all product images to have the same dimensions for consistent category pages. Resize each product photo to the required size before uploading to your store platform.
How It Compares
TUXIA's resizer is optimized for quick, interactive dimension changes with immediate visual feedback. For batch resizing of dozens or hundreds of images, desktop tools like Photoshop (Image Processor), XnConvert, or command-line tools like ImageMagick are more efficient. For mobile-only workflows, TUXIA's resizer works on phone browsers without any app installation.
Technical Notes
- Enlarging an image (upscaling) beyond its original dimensions causes the browser to interpolate missing pixels, resulting in blurriness or softness. Resizing is best used to reduce (downscale), not enlarge.
- The aspect ratio lock ensures width and height maintain the original proportions. Unlocking it allows freeform dimensions, which may stretch or squash the image.
- Quick scale presets (25%, 50%, 75%) multiply both dimensions by the given percentage. For example, 50% on a 2000 × 1000 image produces 1000 × 500.
Best Practices
- Keep aspect ratio locked for most use cases. Only unlock it when you intentionally want to change the image proportions.
- Resize images BEFORE compressing them. Reducing dimensions is the most effective way to reduce file size — then fine-tune with compression.
- Check the target platform's recommended image dimensions before resizing. Each social network, CMS, and e-commerce platform has specific size requirements.
How to use it
- Upload an image and review its original dimensions.
- Enter target width and height or choose a scale preset.
- Preview the resized result and download it in the selected format.
Frequently asked questions
How do I avoid stretched images?
Keep aspect ratio locking enabled when changing width or height.
Can I make an image larger?
Yes, but enlarging can soften details because the browser has to interpolate missing pixels.
What size should I use for web images?
Use the smallest dimensions that still look sharp in the final layout. This improves loading speed and saves bandwidth.