Batch Resize Images
You can also paste images from clipboard
Free Batch Image Resizer Tool - Process 100 Images at Once
Batch Resize Images is a free batch image resizer that runs entirely in your browser. Upload up to 100 images, apply standard preset sizes (Instagram, Facebook, YouTube, HD/Full HD/4K, A4…), set fixed dimensions with ratio lock, or scale by percentage — and fine-tune any image individually. Choose your output format JPEG, PNG (keeps transparency) or WEBP along with the quality you want, preview the results with the file-size savings, then download images one by one or as a single ZIP. Because everything is processed locally, your images never leave your device.
How to use
Drag & drop, choose files, or paste from your clipboard. Supports up to 100 JPG, PNG and WEBP images at once.
Use a preset size, enter fixed dimensions (with ratio lock), or scale by percentage. You can also tweak each image individually.
Export to JPEG, PNG (keeps transparency) or WEBP and drag the quality slider to balance file size against sharpness.
Click “Resize All”, preview the results with the file-size savings, then download images individually or as a ZIP.
Key features
Resize up to 100 images in a single pass with an intuitive drag-and-drop and paste-from-clipboard interface.
Instantly apply standard sizes for Instagram, Facebook, YouTube, HD/Full HD/4K, A4/A5/US Letter.
Enable ratio lock to auto-calculate the other dimension per image so nothing gets distorted.
Apply a single percentage to the entire batch in one click.
Export to JPEG, PNG with transparency preserved, or WEBP — or auto-match the original format.
A quality slider lets you balance output sharpness against final file size.
See the new dimensions and the percentage of file size saved on each image before you download.
All processing happens in your browser — images are never uploaded to any server.
Common use cases
Resize images to their actual display size to speed up page loads and improve SEO scores.
Quickly create perfectly-sized images for Instagram, Facebook, Twitter, LinkedIn and YouTube.
Standardize product photos for online stores and product catalogs.
Shrink image sizes before attaching them to marketing emails, documents or reports.
Generate uniform thumbnails for galleries, portfolios and personal photo albums.
Prepare lightweight, correctly-sized images for PDF documents and presentation slides.
Tips for best results
For faster websites, resize images to the exact size they're shown at on the page.
For social media, use a preset instead of typing values: Instagram 1080×1080, Facebook 1200×630.
If your image has a transparent background, choose PNG output so the transparency is preserved.
Set quality around 75–85% for web images to greatly reduce size with little visible difference.
When you need precise fixed dimensions, turn off ratio lock to set both width and height.
With lots of images, use the ZIP download to bundle everything into a single file.
Frequently asked questions
Is my image data secure?
Completely secure. Every resize runs right in your browser, so images are never sent to any server, ensuring absolute privacy.
How many images can I resize at once?
Up to 100 images per batch. If you need more, simply split them into several rounds. This limit keeps the tool fast and stable on any device.
Will PNG images keep their transparent background?
Yes, as long as you choose PNG output (or leave it on Auto with a PNG source). If you pick JPEG, transparent areas are filled with a background because JPEG has no alpha channel.
Which formats are supported and exported?
Input supports JPG, JPEG, PNG, WEBP, GIF, BMP and TIFF. You can export to JPEG, PNG or WEBP, or use Auto to keep the original format.
What's the difference between fixed dimensions and percentage?
Fixed dimensions set the same width/height for every image (with optional ratio lock so the other side is computed). Percentage scales each image relative to its own original size — ideal when your images have different dimensions.
How do preset sizes work?
Choose a preset from the list (Instagram, Facebook, YouTube, HD/4K, A4…) and that size is applied to all images instantly. You can still fine-tune any image afterwards.
How do I download the processed images?
Two ways: download each image with the “Download” button below it, or grab them all in one ZIP using the “Download as ZIP” button. File names include the new dimensions for easy management.
Do I need an account or have to pay?
No. The tool is completely free, has no usage limits, and requires no registration or personal information.
Whether you're prepping images for a website, social media, an online store or documents, the batch image resizer lets you process dozens of files in seconds — with handy preset sizes, flexible format and quality control, all in your browser and completely private. Upload your images and get started today!