How to Batch Compress Multiple Images at Once
Compress 50+ images simultaneously without losing quality. Free batch image compression.
Access and pricing
Supported tools include 5 free on-device uses per day, shared across eligible tools. On compatible devices, guest access needs no sign-in. Signed-in users also get 5 daily eligible on-device uses. AI and cloud processing use credits separately.
New accounts can claim 20 welcome credits once. Eligible offers in MiOffice can earn up to 80 reward credits; offer conditions apply.
Starter costs $6.99/month and includes 250 credits at each paid renewal plus unlimited eligible local processing. Unused credits roll over. The $2.99 Day Pass covers 24 hours of eligible local processing; AI and cloud credits are separate.
Compare tools using a representative file and inspect the export. Check supported formats, device compatibility, processing location and the displayed cost before starting. This article is published by MiOffice; consider its recommendations with that affiliation in mind.
Access and pricing updated October 30, 2026. This editorial update does not indicate a new test run.
Why Batch Processing Matters
Whether you're a photographer processing a shoot, a designer preparing web assets, or an e-commerce seller optimizing product photos, manual compression doesn't scale.
| Method | 50 Images | 500 Images |
|---|---|---|
| One at a time | ~25 minutes | ~4 hours |
| Batch processing | ~30 seconds | ~5 minutes |
Step-by-Step: Batch Compress Images
- 1
Select All Your Images
Use Ctrl+A (or Cmd+A on Mac) to select multiple files in your folder, or drag a selection box around them.
- 2
Drop Into the Compressor
Drag all selected files directly into our image compressor. You can add up to 50 images at once.
- 3
Set Quality Level
Choose your compression quality. 80% works great for most uses. The same setting applies to all images.
- 4
Download as ZIP
All compressed images download in a single ZIP file, maintaining original filenames.
Optimal Settings by Use Case
| Use Case | Quality | Format |
|---|---|---|
| Website images | 80% | WebP |
| Social media | 85% | JPG |
| E-commerce products | 85% | WebP or JPG |
| Thumbnails | 70% | WebP |
| Portfolio/gallery | 90% | JPG |
Pro Tips for Batch Compression
- •Organize before compressing — Group similar images together so you can use the same quality settings
- •Keep originals — Always save a backup of uncompressed images before batch processing
- •Test first — Compress a few sample images to verify quality before processing the full batch
- •Resize first if needed — Resizing before compression gives better results than just compressing
Compress Your File Now
MiOffice AI is an AI-powered digital workspace studio. Create, edit, convert, compress, collaborate, and share — video, audio, images, documents, scanning, notes, screen sharing, and file transfer. the full MiOffice catalog, all in one place.
Priya Sharma
Technical Writer
Writes step-by-step guides and tutorials that make complex file processing simple.
View all posts by Priya SharmaRelated Guides
WebP vs PNG vs JPG: Which Format Should You Use in 2026?
8 min readImageConvert HEIC to JPG Online — iPhone Photos to JPG
4 min readImageConvert PNG File to JPG Online — No Quality Loss
4 min readImageConvert WebP to JPG Online — Open WebP Files
4 min readImageWebP to PNG Converter Free — Convert Images Online
4 min readImageConvert JPG to PNG Online — Add Transparency Support
4 min read