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Online image resize tool for email — Free Online Image Resizer
Stop searching for Image Resizer alternatives that charge money or watermark your output. Our free online Image Resizer lets you online image resize tool for email without any hassle. It's optimized for speed, works on all modern browsers, and keeps your data private by processing everything locally. Whether you need this once or a hundred times, the tool is always free and always ready.
Use our free Image Resizer — no sign-up, no watermarks, works in your browser.
Try Image Resizer Now →Frequently Asked Questions
Will resizing affect image quality?
Downsizing preserves quality — you're just reducing the pixel count. Upsizing beyond the original resolution may result in some softness since the tool needs to interpolate new pixels.
Does it work on mobile devices?
Yes, Image Resizer works on all modern browsers including Chrome, Safari, Firefox, and Edge, on both desktop and mobile devices.
Can I use this tool for commercial projects?
Yes, you can use Image Resizer for both personal and commercial projects with no restrictions. The output is yours to use however you like.
Is this tool really free to use?
Yes, Image Resizer is 100% free with no hidden fees, no premium tiers, and no usage limits. You can use it as many times as you want without ever paying.
What's the best size for social media posts?
For Instagram posts, 1080x1080px (square). For Facebook and Twitter, 1200x630px works well. For YouTube thumbnails, 1280x720px is the standard.