> ## Documentation Index > Fetch the complete documentation index at: https://docs.siftly.ai/llms.txt > Use this file to discover all available pages before exploring further. # Product Optimization > Optimize product titles, descriptions, and attributes for AI shopping and submit them to Google Merchant Center and Manufacturer Center. Product Optimization: baseline vs. proposed attribute diffs, with GMC and GMfC submission ## Overview Product Optimization rewrites your product data (titles, descriptions, and attributes) to be clearer and more complete for AI shopping engines, then submits the results to [Google Merchant Center](/shopping/integrations/google-merchant-center) and [Google Manufacturer Center](/shopping/integrations/google-manufacturer-center). Better structured data is one of the most direct levers for getting onto the shelf. ## Choosing products The candidates list shows your tracked products with a **readiness score** and the number of suggested improvements. Readiness reflects how complete your product data is. Start with high-impact, lower-readiness products. ## How a job runs Siftly gathers your baseline product data, competitor patterns, and brand context. It proposes optimized titles, descriptions, and attributes tuned for AI shopping. A compliance and claims check catches policy issues, overlong fields, and unsupported claims. The result is normalized, scored for readiness, and prepared for submission. In **guided** mode the job pauses for your review; in **auto** mode it runs straight through to await your approval. ## Reviewing changes The workspace shows your product with **baseline vs. proposed** attribute rows. Accept or reject changes, rewrite individual attributes, or refine by chat. Separate tabs organize the data for **Review**, **Google Merchant Center**, and **Google Manufacturer Center**. ## Submitting When you **Approve** a job, submission unlocks: * **Submit to GMC**: preview the feed snippet with a dry run, then submit. Apply changes to one variant or bulk-apply across several. * **Publish to GMfC**: for products whose brand is approved in Manufacturer Center. Every submission is versioned. Use the version timeline to review past submissions or roll back. Hard policy violations (prohibited claims, length limits) block submission until resolved. Advisory issues appear as warnings you can choose to proceed past. ## Related Connect your product feed. Publish manufacturer attributes. Find products worth optimizing. Keep optimized copy on-brand.