Connected browser-local PDF workflow

v10.84 connects page organization, merge/split, rotation/deletion/extraction, conversion, compression, annotation, forms, metadata, page sizing, N-up/booklet/poster printing, comparison, and repeated header/footer work without replacing the established historical PDF engines.

PDF processing boundaries

These tools operate within browser memory and the capabilities of pdf-lib/pdf.js and the existing local engines. Encrypted, malformed, scanned, XFA, unusual forms, complex signatures, OCR-dependent documents, and advanced desktop-editor features can require specialist software. Always verify generated files before discarding the source.

How to use this Alternate Merge PDF

Choose two PDFs, select which file starts first, and alternate their pages while preserving any remaining pages.

Practical tips and limits

Processing runs in your browser and creates a new file rather than changing the original. Very large or encrypted PDFs can exceed browser memory or library support, so keep the source file until you verify the result.