How It Works
Batch resize photos in four simple steps — completely free, with no uploads and total privacy.
Step 01
Upload Your Images
Drag and drop or click to select images. JPEG, PNG, WebP, AVIF, and GIF are all supported. Select as many as you need — there's no hard limit.
Step 02
Set Your Resize Options
Choose to resize by exact pixel dimensions, by percentage, or by longest edge. Optionally convert to a different format (JPEG, PNG, WebP) and set a quality level.
Step 03
Click "Resize All"
Your browser processes all images in parallel using Web Workers. You'll see a live progress bar. No data leaves your device — ever.
Step 04
Download as ZIP
Once done, download all resized images in a single ZIP file, or download individual images by hovering over any thumbnail.
Your Privacy, Guaranteed
This tool is built with privacy as a core principle. All image processing runs locally in your browser — no file is ever uploaded to any server. We don't store, log, or analyze your images in any way. You can even use it offline once the page has loaded.
Frequently Asked Questions
- Do my images get uploaded to a server?
- No. All processing happens entirely in your browser using the Canvas API. Your images are never sent to any server.
- Is there a file size limit?
- There's a soft limit of 50MB per file to prevent browser memory issues. For very large batches (100+ files), we recommend processing in smaller groups.
- What image formats are supported?
- Input: JPEG, PNG, WebP, AVIF, GIF. Output: JPEG, PNG, WebP (AVIF support coming soon).
- Will resizing reduce quality?
- Downscaling is lossless in terms of content. For lossy formats like JPEG and WebP, you control the quality level with the quality slider. PNG output is always lossless.
- Can I resize images without losing quality?
- Yes. When downscaling, no visual data is lost. For lossy formats (JPEG, WebP), set the quality slider to 80–90% for the best balance of file size and clarity. PNG output is always lossless.
- Does it work on mobile?
- Yes. The tool works on any modern browser including mobile Safari and Chrome. Processing may be slower on low-powered devices.