How to Batch Compress Images Online: Save Time and Storage

Compressing images one by one is tedious when you have hundreds of files. Batch compression tools handle multiple images simultaneously. Here are the best tools for batch compressing images online in 2026.

1. TinyPNG Batch Compression

TinyPNG supports batch compression of up to 20 images at once, each up to 5 megabytes. Simply drag and drop multiple files onto the TinyPNG website. All images are compressed simultaneously, and you can download them individually or as a ZIP file. The batch processing is fast, typically completing 20 images in under a minute.

2. Optimizilla

Optimizilla compresses up to 20 images in a single batch. It shows each image with a quality slider so you can adjust compression levels individually. After compression, it shows exact savings per image. You can download all images as a ZIP file. Optimizilla works entirely in your browser for JPEG and PNG formats.

3. ILoveIMG Bulk Compress

ILoveIMG batch compression lets you upload up to 10 images at once with no file size limit. It offers extreme compression for maximum space savings and normal compression for balanced quality. ILoveIMG also resizes images during compression, which is useful for web developers who need specific dimensions.

4. CompressJPEG / CompressPNG

CompressJPEG and CompressPNG are sister sites that offer unlimited batch compression in the free version. There is no limit on the number of images you can process. Each image can be up to 10 megabytes. The tools preserve EXIF data and support lossy and lossless compression modes. Results are downloadable as individual files or ZIP archives.