log in to instagram in your browser, then run this in the console. use at your own risk! works as of 2021-12-15 but is likely to break!

scrape-instagram-feed.js

;(async () => {
  const PATH = 'https://www.instagram.com/graphql/query/'

  const QUERY_HASHES = {
    list: '8c2a529969ee035a5063f2fc8602a0fd',
    post: '7d4d42b121a214d23bd43206e5142c8c'
  }

  const get = (query, args) => {
    const queryParams = { query_hash: QUERY_HASHES[query], variables: JSON.stringify(args) }
    const queryString = new URLSearchParams(queryParams).toString()
    const url = `${PATH}?${queryString}`
    return fetch(url).then(r => r.json())
  }

  const getPhotos = async (userId) => {
    let result = []
    let after = ''
    while (true) {
      const response = await get('list', { id: userId, first: 50, after })
      if (response.status !== 'ok') {
        console.log('uh oh', response)
        break
      }
      result = result.concat(
        response
          .data
          .user
          .edge_owner_to_timeline_media
          .edges
          .map(e => e.node)
          .filter(n => n.__typename === 'GraphImage')
          .map(node => ({
            shortcode: node.shortcode,
            url: node.display_url,
            dimensions: node.dimensions,
            taken_at_timestamp: node.taken_at_timestamp,
            location: node.location,
            caption: node.edge_media_to_caption && node.edge_media_to_caption.edges.length ? node.edge_media_to_caption.edges[0].node.text : null
          })
        )
      )
      if (!response.data.user.edge_owner_to_timeline_media.page_info.has_next_page) {
        break
      }
      after = response.data.user.edge_owner_to_timeline_media.page_info.end_cursor
      await new Promise((res) => setTimeout(res, 1000))
    }
    return result
  }

  const getPhoto = async (shortcode) => {
    const response = await get('post', { shortcode, child_comment_count: 3, fetch_comment_count: 40, parent_comment_count: 24, has_threaded_comments: true })
    if (response.status !== 'ok') {
      console.log('uh oh', response)
      return
    }
    const node = data.shortcode_media
    const result = {
      shortcode: node.shortcode,
      url: node.display_url,
      dimensions: node.dimensions,
      taken_at_timestamp: node.taken_at_timestamp,
      location: node.location,
      caption: node.edge_media_to_caption && node.edge_media_to_caption.edges.length ? node.edge_media_to_caption.edges[0].node.text : null
    }
    return result
  }

  // I don't have a recommendation for an easy way to get your user ID, sorry!
  console.log(JSON.stringify(await getPhotos('631832')))
  // console.log(JSON.stringify(await getPhoto('CWr6fSareab'), null, 2))
})()