Bulk Image Resizer – Resize Multiple Images Online

Resize dozens of images to the same dimensions in one go. This online image tool lets you set one width and height (or preset), add many files, and download a single ZIP. A free image optimizer for galleries, thumbnails, and social batches.

Bulk Image Resizer

Resize multiple images at once (max 10 per batch)

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Why Use Our Bulk Image Resizer?

Set one size, resize many images, download one ZIP—fast and free

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Quick and Easy To Use

Drag and drop your images, set a target size in pixels or pick a preset, and let the tool handle the rest. Bulk resize within seconds and download one ZIP with all results.

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Best Bulk Image Resizer

Set one width and height for the whole batch—ideal for web, social, or print. Use presets for common dimensions or enter exact pixels. Every image gets the same size.

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Supported Formats and Batch Size

Bulk resize JPG and PNG images. Set dimensions in pixels or use one-click presets. Add many images at once and download a single ZIP—no need to resize one by one.

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Reduce File Size Across a Batch

Resize multiple images to the same smaller dimensions so file sizes drop across the board. For even smaller files without changing dimensions, use our image compressor online.

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Your Images Are Safe

Your images never leave your device. All processing runs in your browser—we don’t upload to cloud servers or store your files. Complete privacy, no exceptions.

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It's Free

Resize millions of images online for free. No software to install, no registration, no watermarks. Bulk image resizer since 2025—and always free.

Related tools

Resize image onlineImage compressor onlineCrop image onlineEnlarge image onlineConvert image to JPG, PNG, WebPResize PNG onlineResize JPG onlineResize WebP online

When Do You Need a Bulk Image Resizer?

Resizing one image is easy—you open a tool, set dimensions, and download. But when you have 20 product photos, 50 thumbnails, or a folder of screenshots that all need to be the same size, doing it one by one is a grind. A bulk image resizer lets you set one target width and height (or pick a preset), add all your files, and get back a single ZIP with every image resized to that size. No opening and saving each file manually.

You might need it for an online store where every product image should be 800×800, a blog gallery where all images need to be 1200px wide, or a batch of social graphics that have to match a platform’s specs. Setting one size for the whole batch keeps everything consistent and saves time. For single images where you want crop, rotate, or social presets, use our resize image online tool. For shrinking file size without changing dimensions, our image compressor online is the right fit.

How Bulk Resizing Works

You choose the target dimensions once—either by entering width and height in pixels or by selecting a preset (e.g. for web or social). Then you add as many images as you want. The tool resizes every image to that same size and packs the results into one ZIP file. You download the ZIP and extract the resized images. No account, no upload to our servers—everything runs in your browser so your files stay on your device.

Output format is usually JPG or PNG; you pick one for the whole batch. Smaller dimensions mean smaller file sizes, so you’re not only standardising size but often reducing total data too. If you need to squeeze file size further without changing dimensions, run the resized images through our image compressor online. For one-off resizing with more control (crop, percentage, presets), the single-image resize image online tool is there.

Bulk Resize for Stores, Galleries, and Social

Online sellers often need every product photo at the same dimensions—e.g. 1000×1000 for a marketplace or 800×800 for a store. Upload the batch, set the size, and get one ZIP. Bloggers and content teams can prepare a set of images for a post or gallery the same way. Developers and designers can generate thumbnails or asset sets at fixed dimensions without scripting.

Social campaigns sometimes need many images at one size—e.g. Instagram posts or Facebook ads. Bulk resize to that size, then upload. If you only need to resize a single image with crop and presets, use our resize image online tool. If you need to convert format (e.g. PNG to JPG) for the whole set, our image converter can help; for resizing and then compressing, combine this bulk image resizer with our image compressor online.

Your Images Never Leave Your Device

Some bulk resizers upload your images to their servers, process them in the cloud, and then let you download the ZIP. That means your files—product photos, client work, or personal pictures—spend time on someone else’s infrastructure. We don’t do that.

This bulk image resizer runs entirely in your browser. Your images are read on your device, resized there, and packed into a ZIP that you download. We don’t upload them, we don’t store them, and we don’t see them. So you can bulk resize sensitive or confidential images without worrying about where they go. The same applies to our other tools: resize image online, image compressor online, crop image online, and image converter. All run in the browser so your files stay private.

Guide & FAQs

Key features

  • Resize many images to the same size at once
  • Download all results in one ZIP file
  • Choose output format (JPG or PNG)
  • Free photo resizer tool – no signup
  • Processing in your browser; files stay private

How to use

  1. Enter target width and height (or use a preset).
  2. Add all the images you want to resize.
  3. Click the button to process. Wait for the batch to finish.
  4. Download the ZIP containing all resized images.

Why choose this tool

You get a simple bulk photo resizer tool without installing software. Processing runs in your browser, so your images stay private. No account or limits.

Use cases

  • Online sellers. Resize product photos to one size for your store.
  • Bloggers. Prepare a set of images for a post or gallery.
  • Developers. Generate thumbnails or asset sets at fixed dimensions.

Frequently asked questions

How many images can I resize at once?
You can add many files in one session. We recommend batches of 50–100 for smooth performance.
Is the bulk image resizer free?
Yes. No signup or payment required.
Will aspect ratio be kept?
Images are resized to your chosen dimensions. Options may include fitting or filling the frame.
Where are my images processed?
In your browser. They are not uploaded to our servers.

Use this tool for batch resizing. For single images with crop and presets, use our resize image online tool. To reduce file size, try our image compressor online.

You can also use these Pixlean tools

For related tasks, try these free online image tools:

By Pixlean Team · info@pixlean.com