Qwen Image 2.1 prompt enhancement: an optional rewriting stage

First establish the baseline

Qwen publishes separate PE-T2I and PE-I2I rewriting models with a prompt_rewrite code path. Q01 They are optional preprocessing stages, not replacements for the image model's conditioning encoder. Missing an optional rewriter does not make the baseline graph incomplete.

Preserve structured outputs

A generation rewrite may include an aspect-ratio choice; an edit rewrite may indicate that the output should follow a reference image. Q01 Keep those fields distinct from the prompt rather than pasting an entire JSON object into a text widget. Check which fields the downstream graph actually supports.

Check intent, not prompt length

Retain the original request, rewritten text, rewriter revision and final dimensions. Verify object count, colors, names, excluded elements and exact lettering. A longer rewrite is not automatically a better interpretation. Check proper nouns when changing the language of the request.

Make data transfer explicit

Local rewriting and hosted rewriting are different integrations. Disclose which text or references leave the device before using an external API. Never embed secrets in a shareable workflow. This site has not connected a paid rewriter or transmitted user prompts as part of this content update.

Sources and verification

Source and code review on 2026-09-22. No GPU run, weight download or quality benchmark. Procedures are editorial guidance, not a confirmed diagnosis of your environment.

• Q01 · Qwen-Image-2.1 official README

Related reading

• Qwen Image 2.1 downloads: component sets, quantization and source identity
• Qwen Image 2.1 text-to-image: establish a comparable first run