HOW TO USE
Step-by-step guide
- Step 1: Select your JPG, PNG, or WebP image file.
- Step 2: Enter desired Width and/or Height in pixels (leave one blank to preserve aspect ratio).
- Step 3: Click "Resize Image" to download your resized image.
IMAGES TOOL
Resize Image
Scale images to precise pixel dimensions for social media, avatars, banners, and documents. Specify target width, height, or both with automatic aspect ratio preservation.
FAQ
Frequently asked questions
What happens if I enter only a width or only a height?
The omitted dimension is automatically calculated based on the original image aspect ratio so your image is never stretched.
What file format will the resized image have?
PNG images are saved as crisp PNGs to preserve transparency; JPGs and WebPs are exported as optimized WebP.
Can I upscale small images with this tool?
Yes. You can specify larger dimensions, though keeping within natural resolution produces the sharpest visual result.
PRIVACY & SECURITY
Client-side in-memory processing
PDF Toolbox is engineered with a strict browser-first architecture. All file operations execute entirely in your local browser sandbox via modern WebAssembly and JavaScript engines. No file bytes or sensitive document data are ever uploaded, buffered, or stored on external servers or cloud infrastructure. Memory buffers are cleared immediately when you finish or close your tab.
🔒 Zero server uploads: Processing stays on your device
⚡ Instant execution: No network upload/download queues
🛡️ Private & Confidential: Safe for legal, medical & financial files
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