[{"id":"merge_pdf","name":"Merge PDF","group":"Popular","description":"Combine multiple PDFs with structural validation."},{"id":"split_pdf","name":"Split PDF","group":"Popular","description":"Extract ranges or single pages into separate PDFs."},{"id":"compress_pdf","name":"Compress PDF","group":"Popular","description":"Optimize PDFs with target-size strategy support."},{"id":"jpg_to_pdf","name":"JPG to PDF","group":"Convert","description":"Create PDFs from images with page sizing rules."},{"id":"pdf_to_jpg","name":"PDF to JPG","group":"Convert","description":"Render pages to images with DPI control."}]