New Now signing in via Google Drive

Move cards and drives to the cloud without filling your laptop.

Plug in an SD card, memory card, or external drive. SlipStream uploads it straight to your Google Drive — no "copy to Desktop first," no waiting for a sync client to catch up. Every byte verified. Picks up where it left off if the cable pops or Wi‑Fi drops.

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Closed beta · Free during early access · macOS (Apple Silicon + Intel)

How it works

Three steps. One uninterrupted stream.

Plug in a card or drive, pick a destination on Drive, hit Start. There's no copy-then-sync hop in the middle.

Plug in & pick

SlipStream detects every SD card, memory card, and external drive the moment it's mounted. Pick a folder — or the whole volume — to queue.

SlipStream pipes them

Each file is buffered briefly, hashed with SHA-256, uploaded, then purged. Your laptop disk stays untouched at any size.

Files land in your cloud

Original filenames, byte-for-byte verified. Re-running over an existing folder skips files that are already there.

The shift

Stop staging on your laptop.

Most people copy from the drive to their internal disk first, then let a sync client pick it up. That two-step dance breaks in expensive ways.

Before

Card / drive → laptop → maybe cloud

Internal disk fills up — 256 GB SSDs choke on a single shoot.
Sync clients re-scan, duplicate, or silently delete on reconnect.
Wi-Fi blip mid-upload? No resume; restart from zero.
Manual cleanup loop after every batch.

With SlipStream

Card / drive → cloud, in one stream

Internal disk stays clear. Streamed end-to-end, never staged.
Picks up exactly where it left off after any interruption.
Re-runs against an existing folder skip files already there.
Every byte verified with SHA-256 before purge.

Why this exists

Three failure modes everyone hits.

If you've moved a card's or drive's worth of files to the cloud, you've probably hit at least two of these.

Sync clients hate removable storage

macOS removed the API that let Dropbox and OneDrive watch external volumes — drives and SD cards. Reconnecting one triggers a full re-scan, duplicates, or silent deletes you only notice weeks later.

Browser uploads are fragile

Drag-and-drop uploads don't resume after a dropped connection. Chrome silently caps folder uploads. For anything in gigabytes, a single Wi-Fi blip costs you the whole transfer.

Copy-first eats your disk

The "reliable" workaround — card or drive → laptop → sync client — chews through 256–512 GB of internal storage in batches and lands you in a manual cleanup loop.

Inside the pipeline

Built for transfers measured in tens of gigabytes.

Plug in a card or drive, pick a destination on Drive, hit Start. Everything below runs unattended.

Doesn't fill your laptop's disk

Files stream through a small in-flight buffer and are purged immediately after upload. The internal disk stays clear at any transfer size.

Byte-perfect SHA-256

Every file's hash is computed on read and verified against the destination. Integrity is auditable, not trusted.

Resumable

Drive disconnect, network blip, or app crash — SlipStream picks up exactly where it left off. No duplicates created.

Destination dedup

Re-running over an already-populated folder skips files that are already there. Re-runs are cheap.

Retry with backoff

Transient 5xx and connection blips retry automatically with exponential backoff. A single Wi-Fi hiccup doesn't fail your transfer.

Honest progress

"X uploaded, Y skipped, Z failed" — never just "completed". You always know what actually moved.

Boundaries

What SlipStream isn't.

For the avoidance of doubt:

Not a sync client

One-shot, not a watcher

No background process. SlipStream runs only while you have it open. It does one job, on demand.

Not a backup service

No server in the middle

We don't operate a server. Files go from your machine straight to your cloud account using your credentials.

Not telemetry

We don't see your data

No analytics endpoint, no telemetry, no back-end. The full data-handling story is in the privacy policy.

Ready to stream?

SlipStream is in a small private beta while Google reviews our Drive integration. Hop on the list — we're inviting people in batches.

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