Image Resizer
Resize images to any dimension
v2.0

Resize Image Online Free — No Upload Required

Resize any image instantly with ShiftPx's free online image resizer. Change dimensions by percentage, enter exact pixel sizes (like 1080×1080 for Instagram), or use built-in social media presets for YouTube thumbnails, Facebook covers, and more. Batch resize multiple photos at once — upload dozens of images and resize them all in seconds. Everything runs 100% in your browser. Your images are never uploaded to any server.

🎯 Quick Answer
To resize an image online for free, drag and drop it into the ShiftPx Image Resizer, choose percentage scale, exact pixels, or social media presets, and click Resize. ShiftPx supports batch-resizing multiple images in parallel, processing files locally on your device.
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Image Resizer FAQ

How do I resize an image for Instagram?

Select the "Presets" tab in the resize settings and click "Instagram Post" (1080×1080) or "Instagram Story" (1080×1920). Upload your image, and ShiftPx will resize it instantly to the correct dimensions. No sign up or download required.

Can I resize images without losing quality?

Yes. ShiftPx uses high-quality resampling algorithms. For best results, set the quality slider to 90%+ when saving as JPEG or WebP. PNG format is lossless and preserves full quality regardless of resize.

Is there a file size limit for resizing?

No server-imposed limit. Since everything runs in your browser, the only limit is your device's memory. Most phones and laptops handle images up to 50MB+ easily.