BatchImageConverter - Bulk Image Converter/Compressor/Resizer

Supports batch conversion of 20+ formats including PNG/JPG/HEIC/RAW, with compression, resizing, and command-line operation. Local conversion for maximum security, compatible with Windows/Mac/Linux, process in 3 seconds!

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Powerful Bulk Image Processing Features

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Multi-Format Batch Conversion

Supports 20+ formats including BMP/GIF/JPG/PNG/HEIC/RAW (ARW/CR2/NEF etc.), convert thousands of images at once without manual processing.

Camera RAW Support No Format Limits

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Batch Compression & Resizing

Custom dimensions (aspect ratio locked), lossless compression, one-click setup for common sizes like 200×200 to save storage space.

Aspect Ratio Lock Lossless Compression

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Flexible Operation Modes

Supports GUI visual operation, command-line execution, and scheduled task scheduling. Save/load sessions for repetitive tasks for efficient automation.

Command-Line Support Scheduled Tasks

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Cross-Platform & Local Security

Compatible with Windows, Mac, and Linux desktop systems. All conversions are processed locally without cloud uploads for absolute privacy protection.

Cross-Platform Local Processing

What People Use It For

A folder of images that all have to change in the same way: converted to a format everything can open, resized to one web size, compressed to fit a limit, or turned into one PDF - processed locally, in one pass, with the file names kept.

Five hundred product photos, one web size

Resize and compress a whole catalogue to a single size, with the file names left alone.

The photos are HEIC and nothing will open them

Convert a folder of iPhone HEIC photos to JPG (or PNG, or WebP) in one pass.

The form says the photo is too large

Compress a folder of images to fit an email, form or portal limit.

The RAW files are too big to send

Turn camera RAW (ARW, CR2, NEF, ORF, PEF) into images anyone can open.

A folder of images, each as its own PDF

Batch-convert JPG, PNG, TIFF, WebP, RAW or HEIC images to PDF files - one PDF per image.

3 Simple Steps to Process Bulk Images

Select Source Folder

Supports recursive subfolder scanning, one-click selection of image directories to process

Set Function Parameters

Choose conversion format, compression ratio, resize dimensions and other custom parameters

Start Conversion

Real-time progress display, bulk processing completed in seconds

Frequently Asked Questions

How long does it take to convert one image? +

Single image conversion takes only milliseconds to complete. Bulk processing of 1000 normal-sized images is usually finished in seconds, with actual speed depending on your computer configuration and image size.

What image formats are supported? +

Supports 20+ image formats including BMP, GIF, JPG, PNG, HEIC, RAW (ARW/CR2/NEF/ORF/PEF etc.), TIFF, WebP, and PDF.

Can I convert images on Linux, macOS? +

Yes, you can. BatchImageConverter has Linux, macOS, and Windows version.

Can I convert images in command line? +

Yes, you can. BatchImageConverter can running in command line, on Linux, macOS, and Windows.