Product
How Granite works.
Four steps. You only do one of them. The other three are why the vault exists.
Step one
Drop.
Granite accepts whatever form the document already exists in. PDF for the obvious cases. JPG, PNG, WebP, HEIC, and HEIF for phone photos, including the Apple-only HEIC that most apps choke on. Plain text and Markdown for notes you already keep as files. Drag a whole folder in if that’s how you have things organized.
Re-dropping the same file never produces a duplicate. Granite recognizes it byte-for-byte at the upload edge.
On Granite Paid, you don’t even have to open the app. Forward any email to your private Granite address and the attachment, or the message itself, files itself. Or map a Dropbox folder to your vault: Granite imports what’s already there, then files every new arrival within a minute.
- JPG / PNG / WebP
- HEIC / HEIF
- Text / Markdown
- Folder upload
What you can upload
Granite accepts PDF files, photos and scans (JPEG, PNG, WebP, and HEIC from an iPhone), plain text files, and Markdown files.
Add to your vault
Drop documents here.
PDF, scans, photos, or text files. We’ll read everything.
Drop documents here
or choose from your computer
- w-2_acme_2024.pdf2.3 MBFiled
- scan_20241128_001.pdf1.1 MBUnderstanding…
- honda_title.heic4.6 MBReading…
Step two
Read.
Granite classifies each document against a library of more than 110 document types we already know how to read. Then it pulls out the fields that matter (wages, dates, amounts, account numbers, expiration dates) and links each document to the people, vendors, vehicles, and tax years it concerns.
A one-paragraph summary in plain English sits on top of every document, so when you come back later, you remember without having to re-read the whole page.
- Received
- Reading
- Understanding…
- Filed
Form W-2 · 2024
Wage and Tax Statement
What this is
autoW-2 from Acme Corp for tax year 2024.
Wages of $148,500 with $28,432 withheld. Filed under Tax 2024 alongside your 1099-NEC from Stripe.
- EmployerAcme Corp
- EIN12-3456789
- Tax year2024
- Wages (box 1)$148,500.00
- Federal income tax withheld$28,432.00
- StateTXlow conf.
Every correction makes Granite better for you specifically. Not everyone, just your archive.
What we already know how to read
More than 110 document types. Growing weekly.
Each document type teaches Granite which fields matter, which entities to link, and how to title it. Don’t see yours? We add a new type roughly once a week. Write us at hello@granite.co and we’ll prioritize it.
Taxes
W-2, 1099-NEC, 1099-INT, 1040, K-1, property tax bill, mortgage interest.
Identity
Passport, driver’s license, Social Security card, birth certificate, visa.
Home
Lease, mortgage statement, home insurance, utility bills, HOA statement.
Vehicles
Title, registration, auto insurance, service records, loan payoff.
Medical
EOB, immunization record, prescription, lab result, insurance card.
Small business
LLC formation, operating agreement, EIN letter, invoices, vendor W-9.
Legal
Marriage certificate, divorce decree, power of attorney, will.
Education
Transcripts, diplomas, enrollment records, financial aid letters.
Step three
Ask.
In plain English. Granite runs hybrid search across keywords, semantic meaning, and the entities each document concerns, then reranks the top results so the right thing surfaces first. You don’t need to remember what you titled the file. You don’t need to remember if you titled it.
Ask a question and you get an answer pulled from the document, with a citation back to the page it came from. Clicking the citation opens that document at that exact page, so you can check the answer against the source yourself.
Real questions people ask Granite: “When does my passport expire?” “Find my 2019 closing disclosure.” “What did I pay for the roof repair?” “Show me all my 2023 tax documents.” You type them the way you’d say them out loud.
Answer · 0.6s
Answer
95% confidence
$1,000
Per-occurrence deductible on your Travelers home insurance policy, in effect for the 2024–2025 term.
Related documents · 2
Home insurance, Travelers, 2024–2025
FiledAnnual premium $1,847.00. Property at 123 Main St. Riders for jewelry and water backup.
insurance/home
Home insurance, Travelers, 2023–2024
FiledPrior-term policy. Deductible was $500 before the 2024 renewal raised it to $1,000.
insurance/home
Step four
Filed.
Every document gets a permanent home, alongside the people, vendors, vehicles, and tax years it concerns. The library reads like a quiet bookshelf. Auto-collections form themselves around the natural groupings: a 2024 tax collection forms the moment you drop your W-2; a vehicle collection forms the moment you drop a title.
Manual collections are there too. Group anything you want, however you want.
Tax 2024
32 docs
Honda Civic
8 docs
Acme Corp
14 docs
tax/W-2
FiledW-2 from Acme Corp, 2024
What this is
W-2 from Acme Corp for tax year 2024. Wages of $148,500 with $28,432 in federal income tax withheld. Filed under Tax 2024 alongside your 1099-NEC from Stripe and last year’s federal return.
Linked to
- Acme Corpvendor
- Tax 2024collection
- Josh Pigfordperson
And more
The vault keeps working, even when you’re not.
Drop / Read / Ask / Filed is the spine. The rest of the product is what makes the spine survive a long time: your archive, your account, your absence.
Platforms
iPhone app
Granite is on iPhone. Scan a page with the camera, share a file in from Files or Mail, and read the whole vault on the phone. Face ID or Touch ID locks it. Same account, same vault as the web.
Move
Move Mode
Moving? Granite reads your vault and builds a prioritized address-change checklist: every bank, insurer, and provider holding your old address, with account numbers and your local postal mail-forwarding link. Start one from any property in your vault, then check each place off as you go.
Share
Vault sharing
Give someone access to a vault you own, with view-only or full edit access. They sign in with their own Granite account, so your documents never leave your vault. Pick view or edit, set an optional expiry, and revoke any time.
Continuity
Emergency access
Name one person who can request your archive. They get an encrypted ZIP after you approve or after the wait window expires.
Continuity
Inactivity heartbeat
Opt-in dead-man's switch. After 90 days of no logins (configurable), Granite emails you a “still here?” ping. No answer + a grace period later, your contact gets the grant.
Continuity
Full archive export
One click downloads every document plus extracted fields, corrections, audit log, and a plaintext manifest. Envelope-encrypted, streamed through your key.
Trust
Audit log
Every view, download, export, edit, and login on your vault. Filterable by kind, 12-month retention, append-only.
Trust
Active sessions + MFA
See every device signed in, revoke any one. You can enroll an authenticator app (TOTP) from your settings today. Granite does not require that code at sign-in yet.
Account
Cancel without losing anything
Your archive is preserved when you cancel, exportable any time, fully restored when you reactivate.
Yours, only yours
Encryption is the floor.
Every document is wrapped with its own AES-256-GCM key before it lands in storage. Titles, summaries, and extracted fields are encrypted again in the database. Granite staff don’t browse vaults; exports flow through your key. Read the full security model for the technical detail.
See the rest in the app. Free to start.