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Image Resizer

Resize images by width, height, percentage, or exact dimensions. Aspect ratio lock. Files never upload.

Free No signup Client-side Privacy friendly

Drop an image here, or

Max 25 MB. Files never leave your browser.

Source

× · ·

Output

Processing…

× · ·

How to use

  1. 1 Drop an image.
  2. 2 Pick resize mode — by width, by height, by percentage, or exact both.
  3. 3 Keep aspect ratio on for proportional resize.
  4. 4 Download the resized result.

Why use this tool

  • Four resize modes — covers every common workflow.
  • Aspect-lock prevents accidental distortion.
  • Choose output format separately from resize.
  • Pure client-side — no upload, no signup, no watermark.

Frequently asked questions

What is the maximum image size?

25 MB input, 10000×10000 px output. Larger inputs are blocked to prevent browser OOM on mobile.

Will it upscale?

Yes — percent mode supports up to 400%, and exact width/height can exceed source dimensions. Upscaling results in blurry output since there is no detail to invent.

Why is the output sometimes blurry after resize?

Browser canvas uses bilinear filtering by default. For very large downscales, consider doing it in two steps, or use a dedicated tool with Lanczos filtering.

Summary

Image Resizer is a free creator utility by Zerethon Tools. Resize images by width, height, percentage, or exact dimensions. Aspect ratio lock. Files never upload. Runs entirely in the browser — no signup, no upload.

Category
Creator
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. Image Resizer runs entirely client-side — no server upload, no logging, no tracking of your input.

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