WS-8553 Add documentation regarding Image Export (#77)

* WS-8553 Add documentation regarding Image Export

* Add info about image download

Author: einarsozols

.github/workflows/wordlist.txt

@@ -140,3 +140,5 @@ iframes
 webhooks
 unix
 customizable
+subfolder
+SHA

docs/Web Scraper Cloud.md

@@ -21,6 +21,7 @@ enabled, scraper changes the IP address and retries to scrape the page.
 * [API][api]
 * [Parser][parser]
 * [Data export][data-export]
+* [Image export][image-export]
 * [Data quality control][data-quality-control]
 * [Notifications][notifications]
 * [Sitemap sync][sitemap-sync]
@@ -110,6 +111,7 @@ element click selector. If the timeout is reached, no data will be scraped from
 [api]: Web%20Scraper%20Cloud/API.md
 [parser]: Web%20Scraper%20Cloud/Parser.md
 [data-export]: Web%20Scraper%20Cloud/Data%20Export.md
+[image-export]: Web%20Scraper%20Cloud/Image%20Export.md
 [scraping-job-performance-graph]: ./images/cloud/scraping-job-performance-graph.png?raw=true
 [parallel-tasks]: images/cloud/parallel-tasks.png
 [Subscription manager]: https://cloud.webscraper.io/subscription-manager

docs/Web Scraper Cloud/Image Export.md

@@ -0,0 +1,33 @@
+# Image Export
+
+Web Scraper Cloud supports automated image export to `Amazon S3, Google Cloud Storage, and Azure Blob Storage`. This feature is available exclusively for `Scale` plan users. Image downloading is performed during the execution of the scraping job. As pages are processed, associated images are downloaded in parallel with data extraction.
+
+## Image Export Configuration
+
+The Image Export tab will be visible when the sitemap contains at least one `Image` selector.
+
+![Fig. 1: Image Export Tab in Web Scraper Cloud][image-export-tab-web-scraper-cloud]
+
+## Exported Image Location
+
+Images are exported to the same path as the data export, within an `images` subfolder. For example, if data is exported to `bucket/web-scraper/my-sitemap` in S3, images will be exported to `bucket/web-scraper/my-sitemap/images`.
+
+## Image Columns
+
+Each `Image` selector creates a separate column in the exported data. The column name follows the format `{image_selector_id}_stored_filename`. File names are generated using the SHA-256 hash of the image URL.
+
+![Fig. 2: Image Export Column Name][image-export-column-name]
+
+## Image Column Structure Based on Selector Configuration
+
+Example image selector ID: `product_image`
+
+* **First record only** - `product_image, product_image_stored_filename`
+* **Multiple records in multiple columns** - `product_image_1, product_image_1_stored_filename, product_image_2, product_image_2_stored_filename, ...`
+* **Multiple records in one column** - `product_image, product_image_stored_filename` (file names separated by newlines)
+
+[image-export-tab-web-scraper-cloud]: ../images/image-export/image-export-tab-web-scraper-cloud.png?raw=true
+[image-export-column-name]: ../images/image-export/image-export-column-name.png?raw=true
+
+description: Web Scraper Cloud supports automated image export to Amazon S3, Google Cloud Storage, and Azure Blob Storage
+keywords: image export, image download, automated image export, web scraper cloud image export