compression ToolBrowser-First (Secure Fallback)

Batch Compress Images Online

Compress entire folders of photos in parallel. Free up gigabytes of disk space or prepare media galleries for web deployment with multi-threaded Web Workers.

compressionOutput: JPG, PNG, WEBP

Batch Image Compressor

Browser-First (Secure Fallback)

Choose image or drag and drop here

Supported: JPG, JPEG, PNG, WEBP, AVIF • Max file size: 100 MB

Quality90%

Output Format

GEO Overview & Factual Summary

How Pixena Processes Batch Image Compressor

Compresses batches of images concurrently using a Web Worker pool and generates a downloadable ZIP archive locally.

Direct Answer:Drop multiple images or an entire folder, select your compression preset, and download a single ZIP of all compressed files.

Processing:Multi-threaded Web Worker pool (2–4 workers) + client-side JSZip packaging

Privacy Model:100% Client-Side. No uploads.

Max File Size:100 MB per file / Up to 100 images per batch

Browser Support:Universal HTML5

AEO Answer Block & Machine-Readable Facts

Key Facts & Definitions

Definition:A batch processing tool for applying consistent compression optimization across multiple image files in parallel.

Q: How many images can I compress at once?A: You can compress up to 100 images at once depending on your computer memory.

Q: Are all compressed files downloaded together?A: Yes, Pixena packages all compressed files into a single, clean ZIP archive.

Step-by-Step Guide

How to Batch Compress Images

Upload Queue

Select multiple photos or drag a folder.

Configure Settings

Choose your desired compression quality.

Start Compression

Pixena processes images in parallel.

Download ZIP

Click Download ZIP to save all files.

Frequently Asked Questions

Frequently Asked Questions about Batch Image Compressor

Will compressing 50 photos freeze my computer?

No, Pixena processes images in worker threads off the main UI thread to keep your browser responsive.

Can I compress mixed folders of JPG and PNG files?

Yes, mixed format batches are fully supported.

Are any photos uploaded to a cloud server?

No, all compression and ZIP creation runs locally on your device.

Can I cancel processing mid-way?

Yes, click Cancel Batch at any time to halt processing.

Does batch compression reduce photo resolution?

By default, dimensions are preserved and only compression quantization is applied.

Is this free?

Yes, 100% free with no limits.

Recommended Next Steps In Your Workflow

1Speed Boost

Lossless Image Compression

Shrink final file size by up to 80% without degrading visual clarity.

Continue Workflow

2Perfect Fit

Smart Image Resizer

Scale width and height to exact pixel budgets or aspect ratios.

Continue Workflow

Compress Image

Reduce image file size while preserving high visual quality.

Compress JPG

Compress JPEG photos with adjustable quality and chroma subsampling.

Compress PNG

Compress PNG images using lossless optimization or 256-color palette quantization.

Compress WEBP

Optimize WebP images for peak web performance and minimal file size.

Compress Image to Specific Size

Compress images to hit an exact file size target in KB (e.g. under 100KB, 200KB).

Reduce Image Size

Dual-action reduction: shrink dimensions and optimize compression together.

Optimize Image

Losslessly optimize images by removing bloat and tuning entropy tables.