png-metadata

Simple PNG text metadata reader that can read from local file and URL.

Why / What's this for?

Sometimes, I just want to get generation parameters from an image and most of the time, exif.tools work just fine
BUT if you want to read PNG metadata from pixiv, you can't
because pixiv image server (https://i.pximg.net) required referer - https://pixiv.net header

Installation

1. Build from source or download Windows pre-built from releases
2. Run executable or pass the argument to the executable

Usage

• Prefix with all: will read every .png files in the specify directory INCLUDES subfolders

  (e.g. all:image collection, all: "scan these subfolders")

• Prefix with http will download the image and read from that image

  (e.g https://mydoma.in/example.png)

• If not with the 2 above prefix and all commands below, It'll read every .png found in directory OR a file

  (e.g. C:\Pictures\My Image Collection, My Image Collection/example.png)

• clear | cls to clear terminal screen
• quit | stop | exit to exit properly
• update to check for update

---

• You can pass in multiple targets
  e.g.
  • Command:

    1.png, 2.png
    

    or

    "1, 2.png", "3, 4.png"
    

    if comma (,) is in the file name
  • Arguments:

    ./metadata 1.png 2.png
    

    or

    ./metadata "this file or dir contains space"
    

    if space ( ) is in the file name
• Apps will try to get text out as much as possible. (checkout src/utils.rs:get_avaiable_text)

Issues

• Twitter images (pbs.twimg.com)

  I don't have plan to support this because I don't know how to make a request to it
  but I found the x-cache header so it might required additional lib as it may has to do with HTTP caching
  AND I DON'T WANT THAT

Credits

• png - Licensed under either of

  • Apache License, Version 2.0 (http://apache.org/licenses/LICENSE-2.0)
  • MIT license (http://opensource.org/licenses/MIT)

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• reqwest - Licensed under either of

  • Apache License, Version 2.0 (http://apache.org/licenses/LICENSE-2.0)
  • MIT license (http://opensource.org/licenses/MIT)

  ---

• colored - Mozilla Public License 2.0 (https://www.mozilla.org/en-US/MPL/2.0/)

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• clap - Dual-licensed under Apache 2.0 or MIT.

  • Apache License, Version 2.0 (http://apache.org/licenses/LICENSE-2.0)
  • MIT license (http://opensource.org/licenses/MIT)