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Work with the URL compression system in kheMessage. Use when modifying how content is stored in URLs, debugging encoding issues, or optimizing compression.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
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Add or improve Markdown parsing and rendering in kheMessage. Use when adding new Markdown syntax support, fixing formatting issues, or enhancing the text editor.
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| name | compression-utils |
| description | Work with the URL compression system in kheMessage. Use when modifying how content is stored in URLs, debugging encoding issues, or optimizing compression. |
Work with the URL-based storage and compression system.
blocks → serializeBlocks (binary + compact props) → CompressionStream (deflate or brotli) → format byte + Base85 → URL hash
| Format byte | Encoding | Compression |
|---|---|---|
| (legacy) | base64url | deflate-raw |
| 0x01 | base64url | deflate-raw |
| 0x02 | base85 | deflate-raw |
| 0x03 | base85 | encrypted (AES-GCM) |
| 0x04 | base85 | brotli |
Format detection: if hash contains chars outside base64url (A-Za-z0-9_-), it's base85. Otherwise legacy base64url.
Block properties use short keys when serialized:
lang → lchecked → cstart → semoji → edepth → dAES-GCM-256 with PBKDF2 key derivation (120k iterations). Payload: salt(12) + IV(12) + ciphertext+tag(16). Triggered via "Lock with password" in Share menu.
https://example.com/?theme=dark#base85EncodedContent