The ultimate free bulk image resizer trusted by 50,000+ monthly users.
Instantly resize multiple images to exact dimensions with smart cropping.
No signup, no downloads, 100% privacy-focused. Resize hundreds images in seconds
- serving millions since 2013.
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BIRME is a free online bulk image resizer for people who need to resize multiple images quickly without installing software or uploading private files. It works in your browser, so you can batch resize images, crop to exact dimensions, rename files, add watermarks, and export everything as a ZIP from the same workspace.
Drop your JPG, PNG, WebP, or AVIF images into BIRME, choose the width, height, crop behavior, output format, and quality, then download the resized images together. You can keep the original aspect ratio, crop every image to the same exact size, or adjust crop areas image by image before exporting.
For repeated workflows, BIRME can batch rename files with a pattern such as ORIGINAL-NAME_800x800 or product-xxx. It can also add a border or watermark during the same bulk resize job, which is useful for product photos, website images, social posts, and client galleries.
BIRME is built for practical image batches: preparing ecommerce product photos, making website thumbnails, resizing blog images, standardizing client galleries, compressing images before email, and creating consistent square or rectangular social media assets.
BIRME processes images locally in your browser. Your files do not need to be uploaded to a server, which makes it a practical choice for private photos, business assets, draft product images, or any batch of files you do not want to send to a third-party service.
The background removal tool uses an AI model in your browser to cut out the main subject from each image. The model is downloaded when needed and cached by your browser, then your images are processed locally without being uploaded.
You can keep the result transparent for PNG or WebP exports, fill the removed background with a solid color, and apply the same background removal workflow to a single image or a full batch. This is useful for ecommerce product photos, profile images, thumbnails, and clean website graphics.
BIRME's AI Enhance tool can enlarge images with super-resolution before export. Choose 2x, 3x, or 4x upscaling when you need a larger version of a small source image, then combine it with resizing, cropping, renaming, or format conversion in the same workflow.
Super-resolution works best when the original image is reasonably clear. It can recover a cleaner large image than ordinary resizing, but it cannot perfectly restore details that were never present in the original file.
For most web images, JPG or WebP quality around 80% gives a strong balance between visual quality and file size. Use the high-quality resize option when sharpness matters, and avoid enlarging small originals too far because upscaling can make photos look pixelated.
BIRME started after a common website problem: clients needed to upload images at consistent dimensions, but most available tools either distorted the photos, produced poor-quality results, or required software installation.
The first version launched in 2012 as a simple browser-based batch crop and resize tool. The goal is still the same today: make bulk image resizing fast, predictable, and accessible from any modern browser.
Drop multiple images into BIRME, set one width, height, crop rule, output format, quality, or rename pattern, then download the resized images together. You can export everything as a ZIP file, download files individually, or save directly to a folder in supported browsers.
Yes! BIRME works entirely in your browser using JavaScript to resize and crop your photos. Your images never leave your computer - nothing gets uploaded to any server.
This makes BIRME useful for private photos, client files, product images, and other image batches you do not want to send to a third-party service.
Yes. BIRME supports common web image formats and can output resized images as the original format, JPG, WebP, or AVIF depending on your settings.
You can also adjust image quality during export to reduce file size for websites, ecommerce listings, email attachments, or social media uploads.
Yes. Use the "Download zip" button to export all resized images together in one ZIP file. If your browser supports folder access, you can also use "Download Files" to save resized images directly to a folder.
Yes. Turn on background removal, choose whether to keep a transparent background or fill it with a color, then apply the result to one image or the whole batch. Transparent exports work best with PNG or WebP output.
The AI model is downloaded when needed and cached by your browser, so the first use may take longer than later background removal jobs. Background removal works best on images with a clear subject and visible separation from the background.
No. Background removal runs in your browser, the same as resizing and cropping. Your images stay on your device while the browser processes them locally.
AI super-resolution, shown as AI Enhance in BIRME, enlarges small images by creating a cleaner 2x, 3x, or 4x version before export. It is useful when ordinary resizing makes an image look too soft or pixelated.
It works best with reasonably clear source images. Very blurry, tiny, or compressed originals may still have visible limits after enhancement.
Yes. You can use BIRME as one workflow: resize or crop the image, remove the background, enhance small images with AI, rename files, choose the output format, and export the finished batch.
AI features take more time than ordinary resizing because they run larger models in the browser. For very large batches, test one or two images first to confirm the result and processing time.
Making an image smaller usually keeps it sharp, especially when you enable BIRME's high-quality resize method. Making an image larger than the original can cause pixelation because the browser has to create extra pixels.
For most online uses, 80% quality offers a good balance between image quality and file size. Going above 90% is usually only needed for specific high-quality requirements.
Yes. BIRME is free to use, requires no signup, and works directly in a modern web browser.
When cropping your images to specific dimensions, BIRME needs to decide which parts to keep and which to remove. This is where auto focal detection comes in handy!
Auto focal detection uses a brilliant Javascript library called "smartcrop" to identify the most important parts of your image. It looks for areas with more details (lines, curves, and visual complexity) since these are typically the "interesting" parts you want to keep.
The rename feature is simple: include "x" characters in your naming pattern, and BIRME will replace them with sequential numbers. For example, if you have 3 images bird.jpg, cat.jpg and dog.jpg, a pattern like my-pet-xxx will rename them into my-pet-001.jpg, my-pet-002.jpg, and my-pet-003.jpg.
Another special keyword is ORIGINAL-NAME. If you use a pattern like ORIGINAL-NAME_400x400, the images will be renamed to bird_400x400.jpg, cat_400x400.jpg and dog_400x400.jpg.
You can also set a starting number for the sequence. For example, if you set it to 100, the first image will be named my-pet-100.jpg.
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