Batch Compress Multiple Images Free Online — JPG, PNG, WebP
Compressing images one by one is tedious. PDFBro's batch image compressor handles up to 20 images simultaneously — upload all, set quality once, download all compressed files in a single ZIP. Free, no account.
Free Online Tool
Image Compressor
Compress images without losing quality
How to Batch Compress Multiple Images
- 1
Open Image Compressor
Go to pdfbro.tech/tools/compress-image.
- 2
Upload all images at once
Drag multiple files from your file browser into the drop zone. Up to 20 images per batch.
- 3
Set quality level
Choose one quality setting that applies to all images. 80% for web, 60–70% for smaller file sizes.
- 4
Download as ZIP
Click Compress. All images compress simultaneously and download as a single ZIP file.
When to Use Batch Compression
Website optimization: Before uploading to WordPress, Squarespace, or Shopify — compress your entire product photo library at once.
Email newsletters: Compress all newsletter banner images to ensure fast email loading on mobile.
Social media batches: Before scheduling a week of posts, compress all images for consistent fast-loading.
Photo galleries: Compress an entire event photo gallery for web display without sacrificing too much quality.
Pro Tips
- 1
For web use: after batch compressing, convert all images to WebP using PDFBro's Image to WebP batch tool for an additional 25-35% size reduction.
- 2
Organize your files before uploading — they'll appear in the same order as selected, and individual filenames are preserved in the ZIP.
Frequently Asked Questions
Can I compress more than 20 images at once?
PDFBro processes up to 20 images per batch. For larger collections, upload in batches of 20.
Are original file names preserved?
Yes. Each compressed image keeps its original filename (with the same extension).
Can I compress different formats in the same batch?
Yes. JPG, PNG, and WebP images can all be uploaded and compressed in a single batch.