Image Resizer
Resize JPEG, PNG, and WebP images to exact pixel dimensions in your browser. Lock aspect ratio or enter custom width and height.
Drop an image here or click to browse
Supports JPEG, PNG, WebP
Aspect ratio lock
When aspect ratio is locked, changing width automatically adjusts height proportionally (and vice versa), preventing distortion.
Why use Image Resizer online?
Image Resizer in the browser saves context switching: no CLI install, no fragile one-liners, and instant feedback for teammates who do not live in the terminal. It is ideal for debugging, demos, and quick checks during code review.
Tips for best results
Work with a sample payload first, then paste production data. Keep privacy in mind: prefer local browser processing for secrets, tokens, and customer data. Bookmark this page for faster access next time.
How to use
- Drop an image or click to browse.
- Enter the desired width and height (or pick a preset).
- Click Resize — the output appears with a file size comparison.
- Click Download to save the resized image.
- Review the output and use Copy to paste into your editor, ticket, or chat.
- Need another utility? Scroll to Related Tools below for Image Resizer companions on skybin.io.
- For a deeper walkthrough, read the linked Skybin blog article at the bottom of this page.
Online tool vs terminal
| Terminal / CLI | This tool |
|---|---|
| Install CLI tools or write a one-off script | Open the tool in your browser — no install |
| Look up flags in man pages or Stack Overflow | Paste input or upload files where supported |
| Repeat for each file format or edge case | Get instant visual feedback and copy buttons |
All resizing runs in your browser using the Canvas API — no images are uploaded to any server.
Frequently Asked Questions
- What does Image Resizer do?
- Resize JPEG, PNG, and WebP images to exact pixel dimensions in your browser. Lock aspect ratio or enter custom width and height.
- What formats are supported?
- JPEG, PNG, and WebP. Output is always in the same format as the input.
- Is upscaling supported?
- Yes. You can resize to dimensions larger than the original, though this will reduce image quality due to upsampling.
- Is this tool free to use?
- Yes. All Skybin developer tools are free with no account, API key, or usage limits.
- Does my data get sent to a server?
- No. Processing runs in your browser whenever possible. Sensitive input never leaves your device unless a tool explicitly fetches a URL you provide (e.g. OG Validator).
- Can I use this on mobile?
- Yes. The tools work in modern mobile browsers, though a desktop screen is easier for large JSON or PDF workflows.
- How is this different from desktop apps?
- There is nothing to install or update. Open a bookmarked URL and start working — ideal for quick tasks during development or support calls.
- Are there keyboard shortcuts?
- Most tools support standard paste (Ctrl+V / Cmd+V) and select-all in text areas. Copy buttons provide one-click output.
- Does Skybin store my history?
- No. We do not log tool inputs or outputs. Refreshing the page clears in-memory state unless the tool encodes state in the URL.
Related Tools
Image Compressor
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Image Converter
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Favicon Generator
Upload a logo and generate all favicon sizes — ICO, PNG, Apple, Android, PWA — with HTML tags and a ZIP download