Image Resizer
Resize to any custom size — 16×16 favicons, social banners, or exact pixels. Export as PNG, JPEG, WebP, or ICO. Everything stays in your browser.
Resize Settings
100% Private Processing
Images are resized in your browser. Nothing is uploaded to ToolMars servers.
Drop images here to resize
or click to select — PNG, JPEG, WebP, GIF, and more
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Why Use an Online Image Resizer?
Favicons, app icons, Open Graph cards, and product thumbnails all need exact pixel sizes. This free image resizer lets you set any custom width and height — including 16×16 — and export in multiple formats without installing software.
How to Resize an Image
- Drop or select one or more images.
- Enter custom dimensions or pick a preset (16×16, 32×32, 1200×630, etc.).
- Choose fit mode and export format (PNG, JPEG, WebP, or ICO).
- Click Resize, then download files individually or as a ZIP.
Frequently Asked Questions
Can I resize an image to 16×16?
Yes. Use the 16×16 preset or type 16 for both width and height, then export as PNG or ICO.
Which formats can I export?
PNG, JPEG, WebP, and ICO (PNG-based). You can also keep the original format when possible.
Are my images uploaded to a server?
No. Resizing runs entirely in your browser. Files never leave your device.