Zero database. Zero tracking. Compressed directly into the URL.
Paste code, compress via client-side Zstandard Level 19 WebAssembly, and share instantly through URL fragment hashes. 100% private, serverless, and offline-ready.
Live Zstandard Compression Sandbox
Test the real-time compression engine directly in your browser. Watch raw source code shrink into compact base64 URL fragments.
Engineered for stateless simplicity.
A pure peer-to-peer sharing protocol eliminating databases, storage limits, and server vulnerabilities.
Zstandard Level 19 WebAssembly Engine
By compiling Facebook’s zstd algorithm to WebAssembly
(@bokuweb/zstd-wasm), SharePaste compresses source code at maximum
compression level 19 right inside the browser thread. Large multi-line classes
shrink by up to 75%, allowing massive snippets to fit comfortably inside standard
browser URL bounds.
Zero-Datastore Security
Snippets reside exclusively in the URL fragment identifier (#). Under
RFC 3986, browsers never transmit fragment data across the wire to hosting servers
or access logs.
Dual Adaptive Sharing
Calculates scannability in real time: URLs ≤ 350 chars display a high-contrast Level L QR code with large modules (≥ 2.6 px/module). URLs > 350 chars automatically switch to instant 1-click clipboard copy.
Zero Accounts & Permanent Snippet Validity
No sign-ups, no monthly subscriptions, and no expiration dates. Because the URL itself holds the payload, your snippet links will never expire, be purged by a backend cron job, or get blocked by database downtime.
Built for fluid developer workflows.
Full editor keyboard shortcuts for fast navigation and sharing.
Frequently asked questions.
#hash). Web browsers never send
fragments over HTTP requests, meaning nobody—not even the host server—can see your
code unless you send them the link.
python -m http.server 8000.
Start sharing code without server baggage.
Free, serverless, zero telemetry, and compressed with Zstandard WebAssembly.