Resize to any dimension with social media presets.
Free, fast, and completely private.
or click to browse your files
Drag and drop any image into the resizer, or click to browse your files. Supports PNG, JPG, and WebP formats up to 10MB.
Pick a social media preset (Instagram, Twitter, LinkedIn, Facebook), enter custom width and height, or scale by percentage. Aspect ratio lock keeps proportions intact.
Your resized image is ready immediately — processed entirely in your browser. Click download to save it. No watermarks, no quality loss.
Every platform has its own ideal image dimensions. Resize includes built-in presets for all major social networks and common display sizes — no guesswork needed.
| Feature | Presets | Custom | Scale % |
|---|---|---|---|
| Best for | Social media | Exact specs | Proportional |
| Aspect ratio | Platform-specific | Lock or free | Maintained |
| Ease of use | One click | Manual entry | Slider |
| Flexibility | Fixed sizes | Any dimension | 10%–200% |
| Use case | Posts & stories | Banners & ads | Batch consistency |
Use presets — one click gets you the exact dimensions each platform requires. No manual calculations needed.
Use custom dimensions when you need exact pixel values, like 728×90 banner ads or specific print sizes.
Use percentage scaling to reduce or enlarge images proportionally. Great for making images 50% smaller or 2× larger.
Resize is engineered to be the fastest, most private image resizer available. Every resize happens on your device — no data ever leaves your browser.
sent to any server — all processing is 100% local to your browser
built-in for Instagram, Twitter, LinkedIn, Facebook, YouTube, Pinterest, Discord, HD, and 4K
average resize time for standard images using the Canvas API
Yes, completely free with no limits. There are no premium tiers, no watermarks, no signup required, and no daily resize limits. Resize is a free tool by disposal.space.
No. Resize processes all images entirely in your browser using the HTML5 Canvas API. Your files never leave your device. There is no server-side processing — everything happens locally on your computer or phone. This makes Resize one of the most private image resizers available.
Resize supports the most popular image formats: PNG, JPG (JPEG), and WebP. Simply drag and drop any image into the resizer, choose your target dimensions, and download the resized version in the same format as your original.
Resize uses high-quality interpolation (bicubic via the Canvas API) to maintain clarity when scaling images. Downscaling generally looks great. Upscaling beyond the original resolution will naturally lose some sharpness — this is a physics limitation, not a tool limitation. For best results, start with the highest resolution source image you have.
Instagram supports three main image sizes: 1080×1080 for square posts, 1080×1350 for portrait posts (which get the most engagement), and 1080×1920 for Stories and Reels. All three are available as one-click presets in Resize.
Twitter recommends 1200×675 pixels for in-stream photos (16:9 aspect ratio). This ensures your image displays without cropping in the timeline. Resize includes this as a built-in preset.
Yes. Switch to "Custom" mode to enter exact width and height values in pixels. You can lock the aspect ratio to maintain proportions, or unlock it to stretch the image to any dimensions you need. Resize supports dimensions from 1×1 up to 16384×16384 pixels.
Switch to "Scale %" mode and use the slider to scale from 10% to 200% of the original size. This is great for proportionally reducing image file sizes (e.g., 50% scale) or enlarging images (e.g., 150% scale) while maintaining the aspect ratio.
There's no hard file size limit since processing happens in your browser. However, very large files (over 10MB) may take longer to process depending on your device's capabilities. Resize will display a warning for large files. Most standard images resize in under a second.
Yes. Resize is fully responsive and works on any modern mobile browser — including Safari on iOS and Chrome on Android. You can tap to select files from your camera roll or file manager. The interface adapts to smaller screens automatically.
Most online image resizers upload your files to their servers for processing. Resize is different — it runs entirely in your browser. This means: your files stay private, resizing is instant (no upload/download wait), it works offline once loaded, and there are no daily limits or account requirements. It's also completely free with no premium tiers.
Yes. Aspect ratio lock is enabled by default. When locked, changing the width automatically adjusts the height (and vice versa) to maintain the original proportions. Click the chain link icon between the width and height fields to toggle it on or off.
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