Batch Image Resizer
Bulk-resize dozens of images at once: fit them within a maximum width and height (aspect ratio preserved, never upscaled) or scale by percentage, then download the whole set as a ZIP. All local, no uploads.
Click to browse, drop, or paste images
Drop a whole folder of images. One click resizes them all and downloads a ZIP. Processed locally.
Bulk-resize dozens of images at once: fit them within a maximum width and height (aspect ratio preserved, never upscaled) or scale by percentage, then download the whole set as a ZIP. All local, no uploads. Batch Image Resizer is a free, browser-based tool in the Toolsnest image tools collection — there is nothing to install, no account to create and no watermark on your results. It works on desktop, tablet and mobile, and because the work happens on your own device it stays fast even with large inputs.
How to use the Batch Image Resizer
- Open the Batch Image Resizer — no sign-up or software download is required.
- Drag and drop your file(s) into the tool, or click to browse and select them from your device.
- Choose any options you need, such as order, quality, page range or output format.
- Click the action button and let the tool process everything locally in your browser.
- Download the finished file. Your originals are never changed or uploaded.
Why use the Batch Image Resizer?
- 100% free with no limits, no sign-up and no watermarks.
- Private by design — your files are processed in your browser and never uploaded to a server.
- Fast and lightweight, with instant results even on a phone or a slow connection.
- Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
- Part of a full image tools suite, so related batch resize tasks are one click away.
Is it private and secure?
Your privacy is built in. The Batch Image Resizer does all processing on your own device using client-side code, so your files are never transmitted, stored or seen by anyone — including us.
Frequently asked questions
How many images can I resize at once?
As many as your device can hold in memory — dozens or hundreds. They are processed one after another and packaged into a single ZIP.
Will small images be enlarged?
No. ‘Fit within max size’ only ever shrinks images; anything already smaller than the limit is kept at its original size to avoid blurriness.
Which output format should I use?
WEBP gives the smallest files at good quality for the web; keep PNG for graphics that need transparency, or JPEG for maximum compatibility.