Free · In-Browser · No Upload
Resize Image Online
Resize images to exact pixel dimensions or by percentage with high-quality multi-step resampling. Lock the aspect ratio, use social-media presets and export as JPG, PNG or WebP.
- No upload — 100% private
- Instant, in-memory processing
- Free, no sign-up, no watermark
Step by step
How to use Resize Image
- 01
Step 1
Open your image
Drop a JPG, PNG or WebP image onto the tool, or click to browse.
- 02
Step 2
Set new dimensions
Enter pixel sizes with the aspect ratio locked, scale by percentage, or pick a social media preset.
- 03
Step 3
Export
Choose the output format and quality, then download your resized image.
Help & clarification
Frequently Asked Questions
Will resizing reduce quality?
Downscaling uses multi-step high-quality resampling to keep edges crisp. Upscaling can't add detail that isn't there, so large enlargements may look soft.
How do I keep the original proportions?
Keep the link icon between width and height enabled — changing one value updates the other automatically.
What happens if the new size has a different aspect ratio?
You can crop to fill the new frame, fit the whole image inside it, or stretch it to the exact size.
Are my images uploaded to a server?
No. Every operation runs locally in your browser using the HTML5 Canvas engine. Your files never leave your device, so they stay completely private.
Is this tool free to use?
Yes — it's completely free with no sign-up, no watermarks added to your output and no daily limits.
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