Resize images online.
Exact pixels, instantly.
Set exact pixel dimensions, lock aspect ratio, or pick HD and 4K presets. Everything runs in your browser — no upload ever.
Free · No account · No upload
Drop an image here
JPEG · PNG · WebP
Three steps. Instant results.
Drop your image
Drag any JPEG, PNG, or WebP onto the resize tool, or click to browse from your device.
Set dimensions
Enter target width and height in pixels, pick a preset like HD or 4K, or scale by percentage. Lock aspect ratio to avoid distortion.
Download resized image
Click Resize and your image is ready instantly at the exact dimensions you specified — no upload, no wait.
Why resize an image?
Modern cameras and smartphones produce images at 12–200 megapixels — far more resolution than most use cases need. A 50 MP photo produces a file that is 20–50 MB and 8000+ pixels wide. Sending it via email or uploading to a website is slow, wasteful, and sometimes impossible due to file size or dimension limits.
Resizing brings the image down to the exact dimensions required by the platform, application, or print specification — without cropping any content. Every pixel is retained, just scaled to fit.
Common image sizes by platform
Reference dimensions for the most common use cases.
| Use case | Recommended size |
|---|---|
| Instagram post (square) | 1080 × 1080 px |
| Instagram / TikTok story | 1080 × 1920 px |
| Twitter / X post image | 1600 × 900 px |
| Facebook cover photo | 820 × 312 px |
| LinkedIn profile photo | 400 × 400 px |
| YouTube thumbnail | 1280 × 720 px |
| Website hero image (HD) | 1920 × 1080 px |
| Email attachment (general) | Max 1200 px wide |
| A4 print at 300 DPI | 2480 × 3508 px |
| App icon (iOS) | 1024 × 1024 px |
Resize vs. compress — which do you need?
Resizing and compression are complementary, not competing, techniques.
- Resize: when the image has too many pixels for its intended use — for example, a 6000×4000 px photo displayed at 1200×800 px. Keeping the extra pixels wastes bandwidth.
- Compress: when the pixel dimensions are already appropriate but the file size is too large — for example, a correctly sized 1200×800 px JPEG that is still 2 MB because it was saved at 100% quality.
- Both: when the image is oversized in both dimensions and file size. Resize first to the correct pixel dimensions, then compress to reduce the file size further.
Privacy by architecture
Your image never leaves your browser.
The resize tool uses the browser's native Canvas API. Your images are scaled and exported entirely on your own hardware — nothing is transmitted, stored, or logged at any point.
- No server upload — resizing happens on your own CPU
- No account or sign-up required to use any feature
- Original image is never modified — only the download is resized
- Works offline once the page has loaded