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100% Private
Your image never leaves your device. All processing uses the browser's Canvas API.
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Aspect Ratio Lock
Lock the aspect ratio so your image stays proportional when you change one dimension.
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3 Output Formats
Export as JPEG, PNG, or WebP. Choose quality level for JPEG/WebP compression.
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Instant Preview
See a live preview of the resized image before downloading.
Frequently Asked Questions
Does this tool upload my image to a server?▼
No. All image processing happens entirely in your browser using the Canvas API. Your image never leaves your device.
What image formats are supported?▼
This tool supports JPEG, PNG, WebP, GIF (first frame), and BMP files as input. Output can be JPEG, PNG, or WebP.
What does maintaining aspect ratio mean?▼
Maintaining aspect ratio means when you change one dimension (width or height), the other adjusts automatically to keep the image proportions unchanged and avoid distortion.
What is the standard size for social media images?▼
Common sizes: Instagram square 1080×1080, Instagram story 1080×1920, Facebook cover 820×312, Twitter header 1500×500, LinkedIn banner 1584×396, OG image 1200×630.
Will resizing reduce image quality?▼
Enlarging an image beyond its original resolution reduces quality as pixels are added artificially. Downscaling generally preserves quality well, especially with high-quality output settings.
