PDF Toolkit

Whiteout PDF

Whiteout rectangular areas in PDF — cover sensitive content.

Use Cases

Typical scenarios for Whiteout PDF — see if it fits before you start

Whiteout PDF · Scenario 1

Revising reports without breaking layout, Whiteout PDF rotates/crops/numbers/watermarks with mm margin control and live preview — WYSIWYG.

Whiteout PDF · Scenario 2

Adding headers/footers for bids, Whiteout PDF offers granular position/font/size/start-number for batch delivery.

Whiteout PDF · Scenario 3

After annotating, Whiteout PDF keeps font embedding so exports render consistently across readers.

How to Use

  1. Upload — Click or drag PDF/images to the dashed zone. Multi-file and large files (<100MB per batch recommended) are read locally only.
  2. Configure & process — Set pages, angle, password or quality, then hit “Calculate / Process”. Whiteout PDF runs via WebAssembly and pdf-lib in your browser — no server queue.
  3. Preview & download — Check pages, size and thumbnails on the right, then download. Batch jobs download one by one; tweak and re-run if needed.

Tips & Notes

  • Page syntax: Use 1,3,5-7 or 1-10,15; empty means all. Out-of-range pages are ignored.
  • Privacy & size: Everything runs locally — no server upload. For large files, process in batches of 50–100 pages.
  • Fidelity: Fonts and vectors are preserved where possible. For scanned PDFs, run OCR/searchable PDF first, then convert.

機能

  • Rotate/crop/watermark/pagination
  • Granular page ranges
  • WYSIWYG preview

Supported Formats

Input
PDF
Output
PDF

All conversions run locally in the browser; check fidelity in desktop for complex layouts.

よくある質問

Will files be uploaded? Is Whiteout PDF safe?

No. Whiteout PDF runs 100% in your browser via File API; no network upload, memory cleared when you close the tab.

Processing failed or download blocked?

Check page ranges, passwords and file integrity. If the browser blocks multiple downloads, allow “automatic downloads” or click links one by one.

How to chain with other edit tools?

Combine workflows: organize pages first, then compress/convert for submission, then protect/sign for delivery.

使い方

Upload file, process, download.

Add Image to PDFInsert images into PDF pages — position, resize and rotate. Add Link to PDFAdd clickable hyperlink to PDF pages — URL annotation. Add Page Numbers to PDFAdd page numbers to PDF — customize position, font, size, margins and start number. Add Text to PDFAdd custom text to any PDF page — choose position, font size and color, local processing. Add Signature to PDFAdd typed signature to PDF — positioned text. Batch WatermarkAdd watermark to multiple PDFs at once — batch process.

すべての計算はブラウザ内で実行され、データはアップロードされません。