Some utilities for processing anime images. (However I guess it'll work for any images).

Pixiv Refresh Token

To obtain your pixiv refresh token for the methods that require it, you can use the pixivauth.py script from PixivPy. I included it in the base of the github repository.

The primary function is processImages that accepts a folder of images, and then a variable amount of processing functions that will be applied to every image in the folder. The processing functions should take the current file parameter and return the path to the output, this is then fed back as the "file" argument to the next function in the chain. See below for an example of using it.

import imageUtils from "animepic-utils"

await imageUtils.processImages(folder, 
    async (file) => this.resizeImage(file),
    async (file) => this.convertImage(file),
    async (file) => this.upscaleImage(file, upscaledFolder)
)

We already have functions for resizing, conversion, and upscaling, but you can continue to write your own if you wish. Apart from image processing, there is the fixFileExtensions function that will correct the file extensions of all the images in a folder. On macOS, the extensions have to be correct in order for the file to preview in finder, so a png cannot have the jpg extension.

import imageUtils from "animepic-utils"

await imageUtils.fixFileExtensions(folder)

Anime specific

The function recoverFromPixiv takes a folder of arbitrarily named images and attempts to recover the original images from pixiv, or danbooru as a fallback. Files which are unrecoverable will be put into an "unrecoverable" folder, usually because it was deleted and not archived anywhere.

import imageUtils from "animepic-utils"

await imageUtils.recoverFromPixiv(folder, process.env.PIXIV_REFRESH_TOKEN)

The reverseImageSearch function reverse searches the image on iqdb and returns the found danbooru post, since usually this is the site with the most info.

import imageUtils from "animepic-utils"

await imageUtils.reverseImageSearch(imagePath)

The filterAIImages function attempts to filter out AI images from a folder containing pixiv images. If you have images that aren't on pixiv, you will have to use your best judgement...

import imageUtils from "animepic-utils"

await imageUtils.filterAIImages(folder, process.env.PIXIV_REFRESH_TOKEN)

The function moepicsProcess takes a folder of anime images and will generate the compressed and upscaled versions that are suitable to upload to my website, https://moepictures.net.

import imageUtils from "animepic-utils"

await imageUtils.moepicsProcess(folder)

We also use filename qualifiers in order to group related images. Images can be grouped together as variations, grouped separately as groups, added as child posts to the first image (_c0), or uploaded completely separately. This comes from most posts on pixiv already using the _p0 (page number) qualifier in the names.

You can change the qualifiers for images in a folder with the changeQualifiers method.

import imageUtils from "animepic-utils"

await imageUtils.changeQualifiers(folder, "g")

These are the full list of qualifiers:

• _s or none - Uploads images seperately
• _p - Joins images together into one post as variations
• _g - Uploads images seperately but adds them to the same group
• _g! - Adds the image as a variation to the previous group post
• _c - Adds images as child posts to the first in the set (_c0)
• _c! - Adds the image as a variation to the previous child post