Add label preview before full generation#9
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- POST /preview endpoint returns base64 first-sheet PDF without storing anything in Supabase (10/hour rate limit, same validation as /upload) - PDFSheetGenerator.generate_preview_sheet() renders to BytesIO instead of disk, calibrates on all labels for accurate bar widths - generate_label_preview() in label_service mirrors upload parsing but skips zip creation, DB writes, and storage upload - New LabelPreview component decodes base64 -> Blob URL, renders PDF in an iframe with loading state, exposes Generate All and Close actions - labelUploader splits into side-by-side layout when preview is active; preview panel is sticky so it stays visible while scrolling the form Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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🚅 Deployed to the BarcodeGenerator-pr-9 environment in LabelGenius
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railway-app
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temporarily deployed
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LabelGenius / BarcodeGenerator-pr-9
April 23, 2026 01:49
Destroyed
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Summary
POST /previewendpoint generates only the first sheet as a base64 PDF — no Supabase storage, no DB writes, 10/hour rate limitPDFSheetGenerator.generate_preview_sheet()writes toBytesIOinstead of disk and calibrates bar widths against all labels so the preview is accurateLabelPreviewcomponent (self-contained) decodes base64 → Blob URL and renders the PDF in an iframe; exposes Generate All and Close actionslabelUploaderswitches to a side-by-side layout when a preview is active — form stays on the left (580px), preview panel fills the remaining width and sticks as the user scrollsTest plan
🤖 Generated with Claude Code