How to send large files without uploading them anywhere

Email caps out, cloud links need accounts, and uploading confidential documents to a random file-transfer site is a bad idea. There are better options.

No upload. No watermark. No sign-up. Every tool mentioned here runs inside your browser.

Option 1 — direct browser-to-browser transfer

P2P Share opens a WebRTC connection between two browsers. You send a code, the other person pastes it, and the file streams directly to them.

Nothing is stored on a server — only the connection handshake goes through a signaling service, which never sees the file. Both browsers must stay open until the transfer finishes.

This is the right choice for a large confidential file when the recipient is available right now.

Option 2 — make it small enough to email

Compress to under 1 MB and most documents send without complaint. If the content must stay sharp, split into numbered parts and send several emails.

Split by Size does this automatically: it packs pages into parts that each stay under your limit.

Option 3 — reduce what you are sending

Most oversized PDFs are oversized for boring reasons: high-DPI scans, duplicate images, embedded fonts nobody needs, blank pages.

Delete blank pages, crop margins, convert colour scans of text to grayscale — often that alone halves the size before any lossy compression.

Questions

Is P2P Share encrypted?

WebRTC data channels use DTLS encryption by default, so the stream is encrypted in transit between the two browsers.

Can the recipient download it later?

No — it is a live transfer. Once the connection closes, nothing is retained anywhere.

Open P2P Share →

Keep reading

• P2P File Share — Send any file browser-to-browser — no server storage.
• Compress PDF — Smaller files — with a Safe mode that keeps text selectable.
• Split by Size — Every part stays under your KB limit.
• Collab Whiteboard — Draw together in real time with a shared code.

All guides & comparisons · All 69 free tools