Resize Image - Scale, Crop & Resize Photos Online Free
Scale by percentage, set exact dimensions, or use social/print presets. Lock ratio to prevent distortion.
How to Resize Images Online
Getting the right image dimensions matters — for social media, website optimisation, upload requirements, or print preparation. Our free image resizer gives you three powerful resizing modes with full control over quality and output format.
Three Resizing Modes
Percentage scaling lets you scale from 5% to 200% with a simple slider. Exact pixel mode lets you set precise width and height with aspect ratio lock. Preset mode offers one-click sizing for social media (Facebook Post, Instagram Square, Instagram Story, Twitter Header), print (A4, US Letter), and screen resolutions (Full HD, QHD, 4K).
Quality Control
The output quality slider (10–100%) balances file size and visual fidelity. For photos, 80–90% JPEG quality is typically ideal. For graphics needing transparency, choose PNG. WebP offers smaller file sizes with excellent quality. All processing happens in your browser.
After resizing, edit brightness and apply filters, or convert to a different format.
Frequently Asked Questions
How do I resize an image without losing quality?
Upload your image, choose your target size or percentage, and set output quality to 90–100%. Avoid scaling images beyond their original resolution for best results.
Can I resize images for social media like Instagram or Facebook?
Yes. Use Presets mode to select from Instagram Square (1080x1080), Instagram Story (1080x1920), Facebook Post (1200x630), Twitter Header (1280x720), and Profile Picture (800x800).
How do I reduce an image to a specific file size like 100KB?
Scale down dimensions using percentage mode and lower the quality slider. Choose JPEG or WebP for the smallest file sizes. Reducing to 50% scale at 70% JPEG quality typically brings images well under 100KB.
What image formats are supported for resizing?
Upload JPG, PNG, WebP, GIF, or BMP. Output can be saved as JPEG, PNG (lossless), or WebP. Aspect ratio lock prevents distortion when entering custom dimensions.