resizy 0.1.1

A fast, resilient CLI for batch image resizing, conversion, and compression.

Resizy

Resizy is a fast, production-minded CLI for batch image resizing, conversion, and compression. It keeps the terminal responsive with ProcessPoolExecutor, validates images before processing, and gives every run a polished Rich progress UI.

Why Developers Like It

• Resize, convert, and compress hundreds of images from one command.
• Keep your shell readable with Rich progress bars, panels, and summaries.
• Avoid heavyweight services. No Docker, Redis, Celery, or background daemon.
• Install globally with pipx, isolated from your app dependencies.
• Gracefully handles corrupted files, invalid formats, and partial failures.

Install

pipx is recommended because it installs Resizy as a global terminal command while keeping its dependencies isolated from your projects.

If you already have pipx:

pipx install resizy

If pipx is not installed yet:

python -m pip install --user pipx
python -m pipx ensurepath

Close and reopen your terminal, then run:

pipx install resizy

On Windows, if python is not available but the Python launcher is:

py -m pip install --user pipx
py -m pipx ensurepath
pipx install resizy

Before Resizy is published to PyPI, install it locally from the repository:

git clone https://github.com/mwlyra/resizy.git
cd resizy
pipx install .

For local development:

pip install -e ".[dev]"

Run the test suite:

pytest

Usage

Convert the demo images to compact WebP files:

resizy run ./examples/images --format webp --width 1000 --quality 82 --output ./examples/output

Convert JPEG and PNG assets to WebP with smart compression:

resizy run ./images --format webp --quality 82

Process nested folders with more workers:

resizy run ./assets --recursive --workers 8 --format webp --width 1920

Write outputs to a specific directory:

resizy run ./campaign --output ./dist/images --width 1200 --quality 76

Resize a single file:

resizy run ./hero.png --format jpeg --width 2400 --quality 88

Delete originals after successful processing:

resizy run ./raw --format webp --cleanup-originals

CLI Options

resizy run --help

Common flags:

• --width, --height: Resize while preserving aspect ratio.
• --format: Convert to jpeg, png, webp, bmp, or tiff.
• --quality: Compression quality from 1 to 100.
• --workers: Number of background worker processes.
• --recursive: Scan directories recursively.
• --output: Choose the output directory.
• --overwrite: Replace existing output files.
• --preserve-metadata: Preserve EXIF metadata when supported.
• --cleanup-originals: Remove source files after successful processing.

Architecture

Resizy is intentionally small and scalable:

• cli.py owns command parsing and terminal presentation.
• processor.py owns validation, image operations, and process-pool orchestration.
• config.py centralizes supported formats, defaults, and package settings.

The main process stays responsive while CPU-bound image work runs in isolated worker processes. Results are streamed back as each file completes, so users get real-time feedback instead of a frozen terminal.

Supported Inputs

Resizy accepts JPEG, PNG, WebP, GIF, BMP, and TIFF images. Each file is opened and verified with Pillow before processing so corrupted or unsupported files fail gracefully in the summary table.

License

MIT