Image Resizer
Resize JPG, PNG, and WebP images to any dimension or preset. Your images never leave your device.
Instagram
Video
Web
Common
🔒 100% private: All resizing happens in your browser using the Canvas API. Your images are never uploaded to any server.
About Image Resizer
Resizing images is one of the most common tasks for web developers, designers, marketers, and everyday users. Whether you need an Instagram post at 1080×1080, a YouTube thumbnail at 1280×720, an Open Graph image at 1200×630, or just need to fit a photo into a smaller file size, this tool handles it. It works entirely in your browser using the Canvas API — you can resize by exact pixels or percentage, lock the aspect ratio to avoid distortion, and use built-in presets for social media. Your images never leave your device.
How It Works
- Upload one or more images (JPG, PNG, WebP).
- Choose a preset (Instagram, YouTube, OG, etc.) or enter custom width/height.
- Optionally lock aspect ratio to prevent distortion.
- Select output format (JPG, PNG, WebP) and quality.
- Click Resize — download the resized image(s).
✨ Key Features
- ✓Resize by exact width/height or percentage
- ✓Lock aspect ratio to avoid distortion
- ✓Presets for Instagram, Facebook, YouTube, Twitter, LinkedIn, Open Graph
- ✓Batch processing — resize multiple images
- ✓Output format: JPG, PNG, WebP
- ✓Quality control for JPG/WebP
- ✓White background padding option for JPG
- ✓Download individual or all resized images
- ✓No upload — 100% client-side
- ✓No signup, no watermark, no limits
🎯 Common Use Cases
- →Resizing photos for Instagram, Facebook, YouTube, Twitter
- →Preparing Open Graph images for social sharing
- →Scaling screenshots for documentation
- →Resizing product photos for e-commerce
- →Preparing thumbnails for blogs and video
- →Adjusting wallpapers for a specific screen size
- →Batch-resizing an image library
- →Meeting upload dimension requirements on forms
💡 Advanced Tips & Pro Insights
- ▸Instagram feed: 1080×1080 (square), 1080×1350 (portrait). Stories: 1080×1920.
- ▸YouTube thumbnail: 1280×720 (16:9). Facebook cover: 820×312. Twitter header: 1500×500.
- ▸Open Graph (link preview) images: 1200×630 is the standard — most platforms use it.
- ▸Lock the aspect ratio when only one dimension matters, so the image is not distorted.
- ▸For best quality when enlarging, start from the largest source image possible — enlargement always loses detail.
Frequently Asked Questions
Is this image resizer free?▾
Yes, this image resizer is completely free with no signup, email, or usage limits. No watermark is added.
Are my images safe?▾
Yes, 100% safe. All resizing happens in your browser using the Canvas API. Your images never leave your device.
Does resizing reduce image quality?▾
Downscaling (making smaller) generally preserves quality if the target size is at least half the original. Enlarging (making bigger) always reduces sharpness because new pixels must be interpolated. Start from the largest source possible.
Which formats are supported?▾
Input: JPG, PNG, WebP. Output: JPG, PNG, WebP. GIF and SVG are not supported by the Canvas API for pixel-based resizing.
How do I keep the aspect ratio?▾
Enable "Lock aspect ratio" — when you change one dimension, the other adjusts automatically to match the original proportions.
What is a good size for social media?▾
Instagram post: 1080×1080. Instagram story: 1080×1920. YouTube thumbnail: 1280×720. Facebook cover: 820×312. Twitter header: 1500×500. Open Graph: 1200×630. This tool has presets for all of these.
Can I resize multiple images at once?▾
Yes, upload multiple images and apply the same settings to all. Each resized image is shown with a download button, plus a Download All option.
Does the resizer add a background?▾
Only for JPG output if the original has transparency. JPG does not support alpha, so the tool fills transparent areas with white. Use PNG or WebP to preserve transparency.