Processed on this device

Document atelier

Understand a document.
Build a flow.
Prove what changed.

Private by construction

Drop a PDF first. Inspect stays local.
Nothing is uploaded.

Stack of editorial research pages with a monochrome mountain photograph
Open a document

Drop PDFs here or choose files

Local-firstOpen sourceFree How local processing works

Sumi originals · 01—09

The tools BentoPDF doesn’t have.

Purpose-built local workflows for inspection, privacy, evidence, packets, and repeatable document work.

01Sentinel Review risky structures before editing. 02Privacy Finder Find sensitive patterns, redact, then verify. 03Smart Split & Rename Preview groups and collision-safe filenames. 04Duplicate Finder Compare exact and near-matching pages. 05Packet Builder Map files to slots and export proof separately. 06Batch Form Studio Map tabular data before generating local PDFs. 07Print Preflight Surface print risks without claiming certification. 08Proof Verifier Reject mismatched SHA-256 transformation receipts. 09Capture Import or photograph pages, then arrange explicitly.

Repeatable work

Start with intent, not a tool list.

All recipes
01MergeCombine open PDFs. 02CompressAttempt reduction; preserve the original. 03OrganizeInspect, reorder, rotate. 04SignAdd a visual mark, not a certificate.

Editable recipes

See every step before it runs.

Recipes contain operations, never your documents. Rearrange them, preflight them, and keep the original in your session workspace.

Utility archiveBrowse every PDF tool

Tools directory

Heavy engines load only after you open a tool.

/

Local by default

Privacy, stated precisely.

Documents are processed in this browser tab. Some tools may fetch versioned engine code; they do not send your PDF to an application server.

Read the privacy model

AGPL-3.0

Forked openly. Changed visibly.

Sumi PDF is derived from BentoPDF. The modified source and upstream attribution stay explicit.

Sumi source BentoPDF upstream

Local-first · Open source · Free 1.0 release candidate