2026-06-17 11:11:37 +08:00
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---
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description: Linearize a PDF for fast web viewing (progressive download).
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---
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# Web-Optimize PDF
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Linearize a PDF so it can be progressively downloaded and displayed in web browsers without waiting for the full file.
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## API Endpoint
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2026-06-21 00:12:59 +08:00
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`POST /api/v1/tools/pdf/linearize-pdf`
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2026-06-17 11:11:37 +08:00
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Accepts multipart form data with a PDF file. No `settings` field is required.
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## Parameters
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This tool has no settings parameters. Upload the PDF file directly.
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## Example Request
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```bash
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2026-06-21 00:12:59 +08:00
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curl -X POST http://localhost:1349/api/v1/tools/pdf/linearize-pdf \
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2026-06-17 11:11:37 +08:00
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-H "Authorization: Bearer si_your-api-key" \
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-F "file=@document.pdf"
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```
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## Example Response
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```json
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{
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"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
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"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/document.pdf",
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"originalSize": 2450000,
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"processedSize": 2460000
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}
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```
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## Notes
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- Linearization rearranges the PDF's internal structure so the first page can render before the full file has downloaded.
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- The output file may be slightly larger than the input due to the added linearization data.
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- Already-linearized PDFs are re-linearized without issue.
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