batch_img

Batch process (resize, rotate, remove background, remove GPS, add border, set transparency, auto do all) image files (HEIC, JPG, PNG) by utilizing Pillow / PIL library. It can apply the action(s) on a single image file or all image files in the input folder / directory. Tested working on macOS and Windows.

Installation

Requirements

python: >=3.12, <3.14

One-time Setup

Install the Astral's uv tool one-time to prepare for all Python tools and packages installation. Install the Astral's uv by its standalone installers:

# On macOS and Linux
curl -LsSf https://astral.sh/uv/install.sh | sh

# Install the latest Python by uv command
uv python install 3.13

# Create the Python virtualenv by uv command
uv venv

# Activate the Python virtualenv
source .venv/bin/activate

# On Windows (PowerShell)
powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"

# Add uv command into environment search path
$env:Path = "C:\Users\{your_user_name}\.local\bin:$env:Path"

# Create the Python virtualenv by uv command
uv venv

# Activate the Python virtualenv
.venv\Scripts\activate

Install the batch_img tool

Install the batch_img tool from PyPI by the Astral's uv command:

uv pip install --upgrade batch_img

Usage

Sample command line usage:

✗ batch_img --version
0.3.5


✗ batch_img auto ~/Documents
Resize to 1920-pixel max length. Remove GPS location info. Add 5-pixel width black color border.
...
Auto processed 8/8 files
✅ Processed the image file(s)

Contribution

Contributions are welcome! Please see the details in Contribution Guidelines

Help

Top level commands help:

✗ batch_img --help
Usage: batch_img [OPTIONS] COMMAND [ARGS]...

Options:
  --update   Update the tool to the latest version.
  --version  Show the tool's version.
  --help     Show this message and exit.

Commands:
  auto         Auto process (resize to 1920-px, remove GPS, add border)...
  border       Add internal border to image file(s), not expand the size.
  do-effect    Do special effect to image file(s).
  remove-bg    Remove background (make background transparent) in image...
  remove-gps   Remove GPS location info in image file(s).
  resize       Resize image file(s).
  rotate       Rotate image file(s).
  transparent  Set transparency on image file(s).

The auto sub-command CLI options:

✗ batch_img auto --help
Usage: batch_img auto [OPTIONS] SRC_PATH

  Auto process (resize to 1920, remove GPS, add border) image file(s).

Options:
  -ar, --auto_rotate  Auto-rotate image (experimental)
  -o, --output TEXT   Output file path. If not specified, replace the input
                      file.  [default: ""]
  --help              Show this message and exit.

The border sub-command CLI options:

✗ batch_img border --help
Usage: batch_img border [OPTIONS] SRC_PATH

  Add internal border to image file(s), not expand the size.

Options:
  -bw, --border_width INTEGER RANGE
                                  Add border to image file(s) with the
                                  border_width. 0 - no border.  [default: 5;
                                  0<=x<=30]
  -bc, --border_color TEXT        Add border to image file(s) with the
                                  border_color string.  [default: gray]
  -o, --output TEXT               Output file path. If not specified, replace
                                  the input file.  [default: ""]
  --help                          Show this message and exit.

The do-effect sub-command CLI options:

✗ batch_img do-effect --help
Usage: batch_img do-effect [OPTIONS] SRC_PATH

  Do special effect to image file(s).

Options:
  -e, --effect [blur|hdr|neon]  Do special effect to image file(s): blur, hdr,
                                neon.  [default: neon]
  -o, --output TEXT             Output dir path. If not specified, add special
                                effect image file(s) to the same path as the
                                input file(s).  [default: ""]
  --help                        Show this message and exit.

The remove-bg sub-command CLI options:

✗ batch_img remove-bg --help
Usage: batch_img remove-bg [OPTIONS] SRC_PATH

  Remove background (make background transparent) in image file(s).

Options:
  -o, --output TEXT  Output file path. If not specified, replace the input
                     file.  [default: ""]
  --help             Show this message and exit.

The remove-gps sub-command CLI options:

✗ batch_img remove-gps --help
Usage: batch_img remove-gps [OPTIONS] SRC_PATH

  Remove GPS location info in image file(s).

Options:
  -o, --output TEXT  Output file path. If not specified, replace the input
                     file.  [default: ""]
  --help             Show this message and exit.

The resize sub-command CLI options:

✗ batch_img resize --help
Usage: batch_img resize [OPTIONS] SRC_PATH

  Resize image file(s).

Options:
  -l, --length INTEGER RANGE  Resize image file(s) on original aspect ratio to
                              the max side length. 0 - no resize.  [default:
                              0; x>=0]
  -o, --output TEXT           Output file path. If not specified, replace the
                              input file.  [default: ""]
  --help                      Show this message and exit.

The rotate sub-command CLI options:

✗ batch_img rotate --help
Usage: batch_img rotate [OPTIONS] SRC_PATH

  Rotate image file(s).

Options:
  -a, --angle [0|90|180|270]  Rotate image file(s) to the clockwise angle. 0 -
                              no rotate.  [default: 0]
  -o, --output TEXT           Output file path. If not specified, replace the
                              input file.  [default: ""]
  --help                      Show this message and exit.

The transparent sub-command CLI options:

✗ batch_img transparent --help
Usage: batch_img transparent [OPTIONS] SRC_PATH

  Set transparency on image file(s).

Options:
  -o, --output TEXT               Output file path. If not specified, replace
                                  the input file. If the input file is JPEG,
                                  it will be saved as PNG file because JPEG
                                  does not support transparency  [default: ""]
  -t, --transparency INTEGER RANGE
                                  Set transparency on image file(s). 0 - fully
                                  transparent, 255 - completely opaque.
                                  [default: 127; 0<=x<=255]
  -w, --white                     Make white pixels fully transparent.
  --help                          Show this message and exit.

License

batch_img is distributed under MIT License. Please see details in LICENSE.