Sealed · hash-chained · Ed25519
Prove your PDF was never altered.
VeriPDF seals documents with a cryptographic audit trail. Every change is hash-chained and signed on your device — and anyone can verify a sealed PDF, free, forever.
Windows · macOS · Linux — no account, no upload, zero cloud calls
- #0 SEALED 09:14:03a3f8c9e2…41bdprev: genesis
- #1 ANNOTATION ADDED 09:21:477c02d4aa…9e1fprev: a3f8…41bd
- #2 FORM FIELD FILLED 10:02:15e9b7f310…c22aprev: 7c02…9e1f
- #3 BATES APPLIED 10:09:581f6d08c4…77e3prev: e9b7…c22a
01 / audit trail
Change one byte and the chain breaks.
Sealing a PDF starts a hash chain: every edit records the fingerprint of the document before it. Alter anything — a word, a date, a single byte — and every later link stops matching. The signature is Ed25519, computed on your machine.
- Tampering isn't prevented — it's made evident. That's what an audit needs.
- The trail lives inside the document. No server holds the truth for you.
- Export a signed verification report when someone needs it on paper.
- #0 SEALED a3f8c9e2…41bd
- #1 ANNOTATION ADDED 7c02d4aa…9e1f
- #2 FORM FIELD FILLED e9b7f310…c22a
- #3 BATES APPLIED 1f6d08c4…77e3
Try it — this demo is live.
02 / verify free
Anyone can verify a sealed document. Free. Forever.
Receiving a sealed PDF costs nothing to check — no VeriPDF license, no account. You only ever pay to create and seal documents, never to prove one is intact.
03 / the toolbox
A complete PDF desk, all on-device
Everything below ships today, in one native binary. No feature phones home.
provenance
The cryptographic audit trail
Seal a document, work normally, and hand anyone a file that proves its own history. Hash-chained, Ed25519-signed, verifiable offline.
- #0 SEALED a3f8c9e2…41bd
- #1 REDACTION APPLIED 5d19bb07…88c2
- #2 EVIDENCE EXPORTED f04a7e91…d3b6
annotations
Editable annotations
Highlight, underline, free-text, shapes, ink — saved back into the PDF.
forms
AcroForm filling
Fill text, checkboxes, and dropdowns on the page; FDF import and export.
organize
Merge & split
Combine, split, and reorganize documents without an upload step.
production
Watermarks & Bates
Stamp, number, and brand documents for legal and contract workflows.
architecture
Nothing ever touches a cloud
Rendering, OCR, sealing, verification — every operation runs on your CPU. There is no upload code path to misconfigure.
ocr
On-device OCR
PaddleOCR runs locally with first-class CJK support. Scanned documents become searchable without leaving your machine.
security
Encrypt & redact
Password protection, permission controls, and redaction — all local.
markdown
Markdown & calendar
A markdown editor with live preview, daily notes, and markdown → PDF.
sharing
LAN sharing
Move files between your machines directly. No relay server exists.
versions
Version history
Local history with side-by-side diff and restore. Nothing leaves disk.
04 / see it run
Real screens from the current build
A 40-second walkthrough, then the app itself — no mockups, no retouching.
05 / architecture
Local-first is a guarantee, not a setting
VeriPDF is a single native Rust binary. Pages render straight to the GPU — no Electron, no WebView, no browser embedded in your document tool.
Files move between your machines over the LAN, directly. License checks run on a 7-day cadence with a 30-day offline grace period — and they're the only network calls in the product. Your documents have no route off your device.
06 / who relies on this
Built for people who have to prove it
If a document you produce can be challenged, the burden of proof is yours. VeriPDF makes carrying it cheap.
legal
Legal teams
Chain of custody for exhibits and contracts. Bates numbering, redaction, and a verifiable record of every change.
compliance
Compliance officers
Tamper-evident records that survive an audit. Seal a policy or filing and prove it was never quietly edited.
finance
Finance professionals
Sealed statements and reports. When a number is questioned, verification takes seconds, not meetings.
privacy
Privacy-first professionals
Client documents that never touch a cloud. No account, no upload, no third party to subpoena.
07 / pricing
Buy it like a tool
Free to start. Annual if you want updates on subscription terms. Lifetime if you'd rather own it.
Personal
Free forever
- View, search, highlight & comment
- Fill AcroForm fields
- Merge & rotate; basic text/image edit
- Markdown editor, calendar & markdown → PDF
Personal Plus
Everyday document work
= $4.92/month, billed annually
- Everything in Personal, unrestricted
- Full split / organize; full text & image edit
- OCR: 300 pages/month (on-device)
- Watermarks, headers & footers, Bates numbering
Pro
Tamper-evident documents you can defend
= $10.75/month, billed annually
- Everything in Personal Plus
- Create & seal a cryptographic audit trail
- Export a signed verification report
- Unlimited on-device OCR (fair use)
Team
Prove document integrity at scale
= $16.58/month per seat, billed annually
- Everything in Pro, per seat
- One device activation per purchased seat
- Team OCR pool
- Priority support
No monthly plan — on purpose. Buy it like a tool.
Verifying a sealed document is free for everyone, forever — no tier required.
08 / faq
Questions, answered plainly
What sealing, verifying, and buying VeriPDF actually involves.
Seal your first document today.
Download VeriPDF free — no account, no card, nothing uploaded. Seal something, flip a byte, and watch the chain break.