Image editing
Free Image Resizer
Social media size presets + custom dimensions
🔒 All data is processed in your browser. Nothing is uploaded to any server.
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Drag & drop image here, or click to select
Quick guide
What can Image Resizer help you do?
Free online image resizer with social media presets for Instagram, Facebook, YouTube, and more. Enter custom dimensions or lock aspect ratio. Output JPG/PNG/WebP.
Best for
Image Resizer is made for quick image, PDF, thumbnail, and social-media file work before sharing or publishing. It is handy when you need a clean result without a heavy editor.
How to use it
For Image Resizer, enter the URL or text, choose colors and sizes, or upload the file the tool asks for. Review the preview before downloading or copying the result.
How to read the result
After using Image Resizer, before downloading or copying, check dimensions, clarity, file size, page order, and text placement. For websites or social posts, make sure the filename and purpose are clear.
Privacy and limits
When using Image Resizer, image, PDF, and visual asset work is handled mainly in the browser with no sign-in. Very large PDFs, videos, or high-resolution images may be limited by device memory.
For Image Resizer: Only process material you have the right to use. If it contains IDs, addresses, contracts, faces, or unpublished brand assets, review redaction and permissions before sharing.
Frequently Asked Questions
Will quality be reduced?
Bicubic interpolation is used for smooth results. PNG is lossless.
What presets are available?
Instagram post, Instagram story, Facebook post, YouTube thumbnail, Twitter/X, and more.
Are images uploaded?
No, everything runs in your browser.
Can I lock the aspect ratio?
Yes, check "Lock Aspect Ratio" — changing one dimension updates the other automatically.
Can I preserve transparency?
Yes, choose PNG output to keep alpha channel transparency.