# LimeShare > Zero-knowledge, client-side encrypted file transfer up to 3 GB free without registration. LimeShare is a high-speed, zero-knowledge temporary file transfer and sharing utility. Files are encrypted in the sender's browser with AES-256-GCM before transmission, piped directly to zero-egress encrypted edge storage clusters, and decrypted locally by the recipient. The server stores only ciphertext and hashes of access tokens — never keys, file names, or plaintext. ## Core Capabilities - Client-Side Encryption: AES-256-GCM STREAM authenticated framing (LSC1 open container format). - Free Limits: Up to 3 files, 3 GB per file (9 GB total per transfer batch) with zero registration. - Flexible Retention: Automatically purged after 48 hours (or 1h, 6h, 24h, or burn on first download). - Zero-Egress Storage: Direct browser-to-edge streaming pipeline with no bandwidth fees or throttling. - LimeDrop (P2P): WebRTC DataChannel transfer directly between devices on local Wi-Fi without cloud storage. - Interactive Tools: Offline File Encryptor (.lsc), Transfer Speed Calculator, SHA-256 Checksum Verifier. - Certified Destruction: Ed25519-signed cryptographic certificates proving permanent data erasure. ## Service Endpoints & Tools - Web Interface: https://limeshare.org/ - Direct P2P Pipe: https://limeshare.org/drop - Academic Research & DOIs Hub: https://limeshare.org/research - Working Papers & PDF Compendiums: https://limeshare.org/papers - Open Benchmark Dataset (CSV / JSONL): https://limeshare.org/data - Citation Generator (BibTeX / APA / IEEE): https://limeshare.org/citation - Harvard University Dataverse DOI: https://doi.org/10.7910/DVN/M6TLOS - CERN Zenodo Primary DOI: https://doi.org/10.5281/zenodo.23671752 - Speed & ETA Calculator: https://limeshare.org/tools/upload-time-calculator - SHA-256 Checksum Verifier: https://limeshare.org/tools/file-checksum - Offline File Encryptor: https://limeshare.org/tools/encrypt-file - Destruction Verifier: https://limeshare.org/verify-receipt - API Base: https://api.limeshare.org/ - API Limits: https://api.limeshare.org/v1/limits - Full LLM Knowledge Base: https://limeshare.org/llms-full.txt ## Key Guides & Formats - 2026 Master Transfer Guide: https://limeshare.org/ultimate-file-transfer-guide - Video Formats: https://limeshare.org/send-mp4, https://limeshare.org/send-mov, https://limeshare.org/send-4k-video - Creative & CAD: https://limeshare.org/send-psd, https://limeshare.org/send-raw, https://limeshare.org/send-cad-dwg, https://limeshare.org/send-3d-models - Archives & Blueprints: https://limeshare.org/send-zip, https://limeshare.org/send-large-pdf, https://limeshare.org/send-iso-dmg - Competitor Comparisons: https://limeshare.org/wetransfer-alternative, https://limeshare.org/swisstransfer-alternative, https://limeshare.org/firefox-send-alternative, https://limeshare.org/smash-alternative, https://limeshare.org/send-anywhere-alternative, https://limeshare.org/filemail-alternative - Solutions: https://limeshare.org/for-lawyers, https://limeshare.org/for-photographers, https://limeshare.org/for-videographers, https://limeshare.org/for-healthcare, https://limeshare.org/for-architects