Solution
Compress multiple images locally and export them as ZIP
Processing images one at a time is impractical for agencies, content teams, and e-commerce workflows. ConV's batch mode handles dozens of images in a single session with parallel encoding and ZIP export.
Drop an entire folder of images, set a global preset, and download a ZIP of all compressed outputs. No file-by-file manual processing.
Pro users can process unlimited images per session — practical for large catalog runs or campaign asset sets.
Key benefits
- Parallel encoding with Web Workers — multiple images simultaneously
- ZIP export: download all outputs in one click
- Supports JPEG, PNG, WebP, and AVIF in one session
- Per-image quality settings or global preset
Common use cases
- Agencies preparing asset sets for client handoff
- Content teams compressing blog post image batches
- E-commerce teams processing product catalog images
- Marketing teams preparing campaign assets for deployment
How it works
- 01
Drop all images into the tool at once
- 02
Set output format and quality via preset or per-image
- 03
Workers encode in parallel
- 04
Click Download ZIP — one file, all outputs
Limitations and realistic expectations
Batch processing speed depends on your device's CPU and available RAM. Very large batches (100+ high-resolution images) may require patience on slower hardware.
Frequently asked questions
How many images can I process at once?
Free tier: up to 20 images per session. ConV Pro: unlimited images per session.
Does the ZIP preserve my original filenames?
Yes. Output files in the ZIP use the original filename with the new extension (e.g., photo.jpg → photo.webp).
Can I mix JPEG and PNG inputs in one batch?
Yes. You can drop a mix of JPEG, PNG, WebP, and AVIF files and set a single output format for the whole batch.
Are images uploaded during batch processing?
No. All encoding happens locally in your browser. No files are transmitted.
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