No login required
Quick answer
For an immediate exchange without creating an account, a live browser-sharing workflow can work while both devices stay online. If the recipient needs to download after the sender closes the browser, use a storage-backed service instead and check its retention and access rules. No login describes the account requirement; it does not prove anonymity, local routing or unlimited file size.
This guide compares workflow requirements. It does not rank providers by unmeasured speed or privacy claims.
Compare the two main workflows
| Question | Live browser sharing | Storage-backed download link |
|---|---|---|
| Must the sender remain available? | Usually yes; Textunnel needs the source tab open | Check whether upload has completed and storage persists |
| Can the recipient retrieve it later? | Not a reliable choice once the source closes | Depends on retention, quota and access policy |
| Does no account mean private? | No; check signaling, relay, storage and analytics | No; check storage access and provider policy |
| What sets the file limit? | Product route, browser memory and saving support | Provider limits, quota and upload restrictions |
| How should completion be checked? | Receiver verification, then system saving | Upload completion, then successful recipient download |
When Textunnel fits
Use Textunnel P2P file sharing when both devices can open a compatible browser and stay connected during transfer. Open the same room and wait for File channel ready before selecting a file. Direct WebRTC is preferred. Online discovery and signaling still need internet.
A temporary share link is convenient when the other person can receive now, but it is not permanent cloud storage. Keep the source tab open until the receiver finishes. Save received files before refreshing.
File sizes and connection conditions
Textunnel share links and folder packing accept up to 256 MiB. Room reception above 256 MiB requires a supported disk-saving API. Optional MQTT file fallback needs explicit permission in both tabs and is limited to 25 MiB. See all route limits, rather than assuming a no-account tool has no limits.
For a same-Wi-Fi exchange, VPN routing, guest Wi-Fi isolation or firewall rules can block a direct file channel. A device appearing online or a successful text message does not prove a large file can pass. Connection troubleshooting.
Privacy questions to ask any provider
- Does content travel directly, through a relay, into stored cloud storage, or through a combination?
- Who can decrypt it? Is the claim about transport encryption or encryption against the service operator?
- Does the link include a secret, and who can use it if forwarded?
- What remains in browser history, temporary device storage or server storage?
- What analytics or advertising scripts are present?
For Textunnel, WebRTC transport is encrypted. Public-room MQTT payloads need a room password for encryption against the broker. Content relay requires explicit permission in each tab. The site uses browser history and third-party analytics and advertising scripts. Read the privacy policy and relay guide; do not interpret no login as an anonymity guarantee.
Evidence, not a fastest-tool ranking
Textunnel’s published functional record includes 1 MiB and 64 MiB saved round trips between iPhone Safari and Mac on the same Wi-Fi, with matching return hashes. That establishes the tested workflow, not a cross-provider throughput or privacy ranking. Complete test conditions.
Maintained by the Textunnel team. Reviewed October 20, 2026.