Local-first engineering workstation
SilverIce Toolbox
A focused collection of browser-side tools and study pages for developers who work with payloads, APIs, data transforms, and integration security.
Recently Used
View allCrypto Tools
View allAES EncryptorEncrypt and decrypt with AES-GCM, AES-CBC, or AES-ECB. Supports multiple paddings and key/IV/input/output encodings.
DES Compatibility ToolDES with CBC, ECB, CFB, OFB, and CTR modes. Supports padding and multiple encodings for key, IV, input, and output.
SM4 Compatibility ToolSM4-CBC and SM4-ECB with configurable padding and encoding support for key, IV, input, and output.
Hash GeneratorGenerate MD5, SHA-1, SHA-256, and SHA-512 digests. Input supports text, Base64, or Hex encoding.
HMAC GeneratorGenerate keyed digests with HMAC-MD5, HMAC-SHA256, or HMAC-SHA512. Key and message support multiple encodings.
JWT DecoderDecode JWT header and payload locally, with optional HMAC signature verification.
File HashCompute MD5, SHA-1, SHA-256, or SHA-512 digests of a local file.
Key Pair GeneratorGenerate RSA-OAEP or elliptic-curve (ECDSA/ECDH) key pairs and export them as JWK.
Study
View allTransformer LecturesA 30-chapter bilingual course from tensor basics to Transformer internals, diffusion, and source hacking.Foundation30 chapters
Andrew Ng Deep LearningA 28-chapter bilingual course covering ML fundamentals, neural networks, CNN, RNN, and generative AI.Foundation28 chapters
Git Beginner CourseA detailed beginner course for Git concepts, command-line workflow, branches, remotes, conflicts, and safe collaboration.Foundation10 chapters
Godot 4.6.3 Beginner CourseA detailed Godot 4.6.3 course for new game makers, from editor basics to a playable 2D project and export workflow.Foundation12 chapters
Unity 6.3 LTS Beginner CourseA detailed Unity 6.3 LTS course for new game makers, from editor basics to a playable 2D project and build workflow.Foundation12 chapters
Unreal Engine 5.7 Beginner CourseA detailed Unreal Engine 5.7 course for new users, from editor basics and Blueprints to a playable 3D prototype.Foundation12 chapters
AI Agent EngineeringA 40-chapter bilingual course for backend engineers covering manual agent construction, MCP/LSP/A2A protocols, AI-assisted development, task orchestration, and production engineering with runnable multi-language labs.Intermediate40 chapters + labs
Recent Updates
2026-05-20: v1 implementation with static export, Cloudflare Worker deployment, and custom domain support.
2026-05-20: Added local browser tools for crypto, JSON, Base64, URL, timestamps, and more.