Customizing Merge & OCR Guidance
The Prompt Guidance page lets you write personal instructions that Presto follows on every merge and every OCR capture. Use it to adjust how findings are integrated into your template, and how extracted measurements are labeled and formatted.
Step 1: Open the Presto Dashboard
Section titled “Step 1: Open the Presto Dashboard”Go to app.presto.run. If you’re not signed in, enter your email and follow the login steps. Once signed in, click Go to Dashboard in the top-right corner.

Step 2: Navigate to Prompt Guidance
Section titled “Step 2: Navigate to Prompt Guidance”On the Dashboard, find the Prompt Guidance card and click Open Prompt Guidance.
You’ll see two sections: Merge Guidance and OCR Guidance. Both are blank by default.

Step 3: Customize Merge Guidance
Section titled “Step 3: Customize Merge Guidance”Merge Guidance controls how Presto integrates your dictated findings into your report template. Write brief instructions for how you’d like your findings handled. For example:
- “Put retrocardiac opacity in the lungs field, not the cardiac field”
- “Be more concise”
Use a new line for each instruction. Short, specific instructions work best.

Step 4: Save Your Changes
Section titled “Step 4: Save Your Changes”Click Save in the top right. Your guidance takes effect on the next merge.

Step 5: Customize OCR Guidance
Section titled “Step 5: Customize OCR Guidance”OCR Guidance controls how Presto extracts and formats measurements from worksheets, prior reports, and other captured documents. Write brief instructions for how you’d like extracted values labeled or presented. For example:
- “Always spell out measurement abbreviations in full”
- “Label bone density values with the anatomical site”
Use a new line for each instruction. Short, specific instructions work best. Click Save when done — your guidance takes effect on the next OCR capture.