How many files can I process at once in batch mode?

The web UI supports up to 20 files per batch operation. The REST API has no hard batch limit — submit jobs in parallel and poll for completion. Contact us for dedicated bulk processing quotas.

Is batch processing available on the free plan?

Basic multi-file operations (like merging up to 20 PDFs) are available free. Full batch processing across all 83 tools requires a Pro plan subscription.

Can I automate bulk processing with a script?

Yes. The REST API is designed for automation. Use your language's HTTP client to upload files, submit jobs, and poll for completion. The API returns signed download URLs for each completed file.

For Operations teams, data engineers, and high-volume document processors

Bulk PDF Processing at Scale

When you have hundreds or thousands of PDFs to process — compress, OCR, convert, watermark — doing them one by one is not viable. WhiskFile Pro's batch processing mode lets you queue and process large volumes of PDFs automatically.

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Recommended workflow

1
Choose your method
Use the WhiskFile web UI for batches up to 20 files, or the REST API for unlimited scale.
2
Upload files
Drag-and-drop multiple files into the tool, or upload via /v1/files/upload in the API.
3
Configure and process
Set options (compression level, watermark text, OCR language) and submit the batch.
4
Download results
Download a ZIP of all processed files from the web UI, or poll job statuses via the API and fetch individual download URLs.

Common document challenges

Compressing a year's worth of archived PDF reports for cheaper cloud storage
OCR-ing hundreds of scanned invoices for data extraction
Watermarking all client-facing PDFs in a document management system
Converting a large backlog of PDFs to Word for content migration
Merging thousands of per-page PDFs from a scanner into document-level files

Essential tools for operations teams

Compress PDF

Batch compress hundreds of archived PDFs — typically 40–70% size reduction per file

OCR PDF

Batch OCR scanned invoices, receipts, and documents for text extraction and indexing

Watermark PDF

Bulk watermark all client-facing PDFs with company branding or confidentiality stamps

PDF to Word

Batch convert a library of PDFs to Word for content migration projects

Merge PDF

Merge per-page PDF outputs from scanners or document cameras into full documents

Frequently asked questions

How many files can I process at once in batch mode?: The web UI supports up to 20 files per batch operation. The REST API has no hard batch limit — submit jobs in parallel and poll for completion. Contact us for dedicated bulk processing quotas.
Is batch processing available on the free plan?: Basic multi-file operations (like merging up to 20 PDFs) are available free. Full batch processing across all 83 tools requires a Pro plan subscription.
Can I automate bulk processing with a script?: Yes. The REST API is designed for automation. Use your language's HTTP client to upload files, submit jobs, and poll for completion. The API returns signed download URLs for each completed file.

Learn more

How to Compress a PDF File How to Merge PDF Files into One Document How to OCR a Scanned PDF and Make It Searchable Why Is My PDF File So Large? (And How to Fix It)

Start processing PDFs for free

7 tasks per day, no account required. Pro at $4.99/month for unlimited.

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