Resize Image Online
Change image dimensions in exact pixels or percentage scale. Lock aspect ratio for proportional resizing or unlock for custom stretching.
Resize Options
Drop your images here to resize
Select single or multiple JPG, PNG, or WebP images to resize dimensions instantly in browser memory.
Resizing Images
Processing pixels in browser RAM...
100% Private In-Browser Conversion
Your files never touch any remote server or cloud storage.
Local RAM Processing
Conversion is calculated directly on your device CPU using standard HTML5 Canvas API.
Zero Cloud Uploads
No external APIs, databases, or third-party servers see your images at any time.
Works Completely Offline
Once loaded in your browser, you can disconnect Wi-Fi and convert files without internet access.
High-Quality Multi-Step Canvas Scaling
Resize large camera photos down to web or email sizes smoothly. Our anti-aliasing algorithm prevents jagged pixel edges and maintains crisp image details.
Zero Server Uploads & 100% Privacy
Every image pixel is processed locally in your browser memory. Your personal photos, graphics, or document scans never touch external cloud servers.
Frequently Asked Questions
Everything you need to know about resizing images online.
How does in-browser image resizing work?
Our tool uses your web browser HTML5 Canvas 2D rendering engine to scale image dimensions locally. Smooth multi-step anti-aliasing algorithms ensure crisp visual quality without sending your photos to remote servers.
How does the Aspect Ratio Lock work?
When Aspect Ratio Lock is enabled (🔒), changing either width or height automatically calculates the opposite dimension using the exact proportional ratio of the source image. Unlocking aspect ratio (🔓) lets you enter custom dimensions for intentional stretching or distorting.
What image formats are supported?
Our Resize Image tool supports JPG, JPEG, PNG, and WebP images. Output images maintain their original file format with high visual clarity.
Can I resize multiple images at once?
Yes! You can drop multiple images into the tool simultaneously. Each image will be resized to your chosen pixel dimensions, percentage scale, or preset, and you can download all output files in a ZIP archive when 2+ files are processed.
Will resizing increase file size if I upscale?
Yes. Unlike compression tools, image resizing strictly honors your target pixel dimensions. If you upscale an image to larger dimensions or convert into uncompressed formats, the output file size will reflect the new canvas dimensions honestly.
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