PERSONAL
For yourself
Sending a capsule means writing to yourself to remember later who you were, what you hoped for, and what really mattered, or even to set goals!
Send a digital time capsule to your people in the future
For an intimate letter to your loved ones or a collective memory from a whole wedding room. Seal photos, videos, voice notes and messages today, and reveal them on the day you choose.
Infinite ideas, one concept
And you, what will you lock inside?
LOVE
For your loved one
Sending a capsule means entrusting a declaration of love to the future so they can discover it one day as proof of your eternal love.
WEDDING
For a wedding
Seal your private vows and letters for a future anniversary, or place a QR code on the tables so every guest leaves a sealed message.
FAMILY
For your child at 18
Sending a capsule means leaving them a message of love and memories from today, for them to discover the day they become an adult.
BABY
For a baby on the way
Let everyone at the baby shower seal a wish and a prediction from their phone, before anyone knows who was right. Opened on a first birthday, or an eighteenth.
FIRST BIRTHDAY
For a first birthday
They will remember none of it. Let every guest scan a QR code and write to the adult they will become: each message is sealed on the day and opens on a later birthday, as far out as the eighteenth.
VALENTINE'S DAY
For Valentine's Day
A letter each, sealed tonight, opened on a Valentine's Day years from now.
MOTHER'S DAY
For your mother
Sending a capsule means saying what a card has no room for: a letter from each child, the voices, the old photographs, opened on a later Mother's Day.
FATHER'S DAY
For your father
Sending a capsule means keeping his stories in his own voice, recorded while he shows you how it is done, and handing them back to him years later.
RETIREMENT
For a retirement
One capsule, put together by a colleague or the family: what everyone meant to say, the voices from down the corridor, the team photo. Opened a year into retirement.
LEGACY
For collective memory
Sending a capsule means witnessing your era so that the future can understand what it meant to live today.
PROFESSIONAL
For your projects
Sending a capsule means preserving the original intention of a project so you never lose the sense of why you started.
SCHOOL
For a class
Letters and drawings written in September, sealed by the teacher and opened on the last day of the year, or when the class has grown up.
WORK
For a retirement party
One QR code at the leaving do, and every colleague writes what the card had no room for. It reaches them a year after the last day, when the office has gone quiet.
CELEBRATION
For a birthday
Offer a personal message to open on a milestone year, or let everyone at the party scan a QR code and seal their own unfiltered wishes for the guest of honour.
FRIENDS
For a reunion
Everyone writes on the last night together, and it opens at a reunion nobody has organised yet. The date is the reason it happens.
FUN
For fun
Sending a capsule means playing with time by creating a surprise to be discovered later, like a wink from the present to the future.
The journey to the future
Created now, revealed at the chosen moment.
Compose your capsule
Images, videos, words: centralize your memories in an instant.
Plan the opening
Choose the date, recipients, and access conditions.
Capsule opening
Your recipients discover its contents.
For a gathering
A capsule from everyone in the room
An event is a batch of capsules bought for one gathering. You print a single QR code; each guest writes from their own phone and seals it themselves; every capsule is addressed to the one person the evening is about, and opens on a date its author picked inside the range you set.
One QR code to print
On the table cards, on a poster by the door, in a message to the group. Anyone holding it can write, and nobody signs up for anything.
Each guest seals their own
A message, photos, a video if they have one — written where they already are and sealed the moment it is sent, without passing through you first.
All of them to one person
The couple, the colleague leaving, the child the party was for. They arrive on the dates their authors chose, one at a time.
Built to be trusted with the long wait
Sealed & encrypted
Locked and immutable until the day it opens.
Yours to keep
Download everything on opening day, in standard formats.
We won't go dark
If we ever wind down, we release your capsules early.
One payment, no subscription
Pay once when you seal a capsule. No recurring bill afterwards.
- Capsules
- 796
- Sealed hours
- 9.1M+
- Users
- 1.3k+
- Sealed files
- 988
- Privileged ones
- 1.3k+
- Shared memories
- 1025.5M+
Where the capsules are, in time
Every dot is a real capsule someone sealed. Drag through the years and watch them open.
342opened
325still sealed
372 files opened · 521 still sealed
- Photos
- Videos
- Audio
- Documents
The furthest one opens in 2050.
October 2026
What our capsulers say
Join thousands of people preserving their stories for the future.
Frequently Asked Questions
Everything you need to know about creating and securing your time capsules.
What is a digital time capsule?
A digital time capsule is a set of files and messages you seal today and that can only be opened on a future date you choose. Time Capsule is a digital time capsule service: you add photos, videos, documents and a written message, pick the opening date and the recipients, and the capsule stays locked until that day arrives.
How does a digital time capsule work?
You create a capsule, add your files and your message, choose one or more recipients and an opening date, then lock it. From that moment it cannot be edited or opened early. Your recipients are emailed that a capsule is waiting for them, and again on the opening date, when they can read it and download everything.
Can I send the capsule to multiple people?
Yes, simply add the emails of all the people or send them the link or QR code of the capsule.
Can I modify a capsule that is already locked?
No, like a time capsule buried underground, it is impossible to modify it once locked.
Can I delete a capsule?
You can delete your own personal capsules. Capsules submitted to an event, including anonymous guest submissions, cannot be cancelled by the guest or event owner. They are preserved for delivery on their scheduled dates and keep their agreed expiration dates.
Can I change the opening date of a capsule?
No, the opening date cannot be changed after it has been scheduled.
What is Time Capsule?
Time Capsule (time-capsule.io) is a digital time capsule service. You create a capsule containing photos, videos, documents and a written message, and send it to whoever you want — friends, family, or yourself — with a specific opening date. It is run by three brothers through Reen Tech LLC, a registered company in California.
What is the purpose of a Time Capsule?
It allows you to send a piece of the present into the future, to a date decided when locking the capsule.
What type of content can I put in a capsule?
Photos
Videos
Messages
Documents
Audio
...
Who can access my capsule?
Only people with the link will be able to access it. You can also add a password for extra security. Capsules are not end-to-end encrypted, though — see "How is my data protected?" for exactly who could technically reach stored content.
Can I use Time Capsule for an event or wedding?
Yes. An event time capsule lets you place a QR code on table cards or posters at a gathering. Guests scan the QR code with their phones, write a personal message, attach photos or a video, and choose an opening date inside a range you set. Each message is sealed immediately on sending and addressed to the recipients you choose (such as the newlyweds).
What is the difference between a personal capsule and an event capsule?
A personal capsule is created by one person (holding their private letters, vows, photos, and videos) and delivered to chosen recipients on a set date. An event capsule is designed for gatherings: you place a single QR code on table cards or posters, and every guest scans it from their own phone to write and seal their own message directly to the hosts. Guests need no account or app, and all messages unlock together on the future anniversary you choose.
What happens if Time Capsule shuts down?
We'd never just disappear with your capsules. If we ever had to wind the service down, we commit to two things: we'll warn you well in advance, and we'll release every pending capsule early — delivering your messages ahead of their date rather than letting them be lost. You'd get your memories back, not a dead link. The honest reason we'd ever stop: the only thing that could force it is the running cost (the company and the servers). We keep that cost deliberately low, and we'd seek help from our community to keep it alive before ever going dark.
Will my data still be here in 10, 20, or 30 years?
Your capsule is stored, sealed, until its opening date — our plans cover up to 30 years, and you can schedule beyond that for a small per-year add-on. We've built on durable, professional infrastructure (Cloudflare R2 and D1, encrypted at rest) and we take preservation seriously. But we won't insult you with unbackable permanence claims — no one can honestly promise that. What we can promise: on opening day you download everything in standard formats and keep your own copy, and if we ever wind down we'll release your capsule early. The most durable copy is the one in your hands, and we make sure you get it.
Who is behind Time Capsule?
Three brothers — a CTO, a software engineer, and a math teacher. Two of us became fathers and wanted to send messages their daughters would open years later; the idea pulled all three of us in. Time Capsule is operated by Reen Tech LLC, a registered company in California. We run it carefully and personally — it's not a faceless platform. The full story is on our Preservation page.
What if it was now?
Time doesn't erase everything!
Lock the present, reveal it in the future.