I prefer the WikiPedia workflow for uploading photos:
Step0 Open the Photo Browser, Gallery
Step1…Select the photos to upload, press next
Step2. Add info in some fields, others can be done in the website later
Step 3. Upload the files to iNaturalist
Step 4. Gray out, Green circle around the photos
The workflow like https://www.wikiuploaderapp.com/features.html has
and it also prevents double uploading.