Real bulk processing
Queue up to 100 images per batch, watch per-file progress, and pause, resume or retry without losing the rest of the batch.
Convert and compress hundreds of images without uploading them
Reducio turns heavy photo folders into fast, web-ready WebP, AVIF, JPEG or PNG files. Processing happens in your browser by default, so your originals stay on your own machine.
No account needed for local processing. 100 files and 35 MB per file per batch.
Built for people who ship a lot of images
Runs on your device
Web Workers and OffscreenCanvas do the work locally, so nothing leaves your computer unless you deliberately choose the cloud workspace.
Target file sizes
Ask for 500 KB and Reducio steps quality down, then dimensions, stopping at your floors and telling you honestly if it could not get there.
ZIP and CSV in one click
Download every optimized image as a single ZIP, plus a metadata CSV with before and after sizes, dimensions and savings.
Private by construction
The optional cloud workspace uses private buckets, per-user access rules and no permanent image library. Deletion is immediate on request.
24-hour hard expiry
Any temporary cloud file is removed within 24 hours by an automatic cleanup job. That limit cannot be turned off.
How a batch works
- Step 1
Drop your images
Drag a folder in or pick files. JPEG, PNG, WebP, AVIF, GIF, BMP and SVG are supported, with honest warnings for formats your browser cannot decode.
- Step 2
Choose a preset
Listing thumbnail, web gallery, premium real estate, fast landing page and more, or set format, quality, dimensions and target size yourself.
- Step 3
Process and compare
Watch the queue run, then compare original and optimized side by side with zoom and exact byte savings.
- Step 4
Download and clear
Grab the ZIP, confirm it saved, then clear the temporary workspace in one click.