AI Development
Offline helpers for prompts, datasets and bounded API structures. No external AI calls.
Prepare JSONL fixtures, assemble literal templates, compare prompt versions and inspect text chunks without connecting to an external AI service. Offline describes the absence of AI-provider calls; processing still runs on this server.
Token counts are heuristic. Provider validators cover a named dated subset, and chunk previews show exact boundaries rather than semantic relevance or retrieval quality.
FIND YOUR NEXT SHORTCUT
Good tools. Close at hand.
Search a task. Open a workspace.
10 tools
JSON Formatter & Validator
Format and validate JSON.
JSONJSON Minifier
Compact JSON text.
JSONJSON Compare
Compare JSON structure.
JSONURL Encoder / Decoder
Encode or decode URL text.
EncodingBase64 Encoder / Decoder
Encode or decode UTF-8 Base64 text.
EncodingHTML Entity Encoder / Decoder
Encode or decode HTML entities as text.
EncodingJWT Decoder
Inspect unverified JWT contents.
SecurityHash Generator
Hash exact text bytes.
SecurityPassword Generator
Generate a password using selected classes.
SecurityToken Generator
Generate a random token.
SecurityWord & Character Counter
Inspect text length.
TextUUID Generator
Generate random version 4 UUIDs.
UtilitiesUnix Timestamp Converter
Convert explicit Unix time units and dates.
UtilitiesXML to JSON
Convert XML to an explicit ordered JSON structure.
JSONBcrypt Hash & Verify
Hash a password or verify a supported bcrypt hash.
SecurityRegex Tester
Inspect bounded PCRE2 matches and byte positions.
TextJSON to CSV
Export flat records with explicit spreadsheet protection.
JSONCSV to JSON
Convert strict delimited records to JSON strings.
JSONJSON Tree Viewer
Explore a bounded server-derived JSON tree.
JSONCode & Text Compare
Compare exact lines in inline or side-by-side views.
TextURL Parser
Inspect raw HTTP URL components without fetching.
UtilitiesCron Explainer
Inspect a numeric five-field cron expression.
UtilitiesColor Converter
Convert a defined sRGB HEX, RGB and HSL subset.
UtilitiesJSONL Validator
Validate independent JSON records with line-specific diagnostics.
AI DevelopmentJSONL Formatter
Compact one JSON value per line while preserving exact tokens.
AI DevelopmentPrompt Template Builder
Replace literal named placeholders with supplied string variables.
AI DevelopmentToken Count Estimator
Get a clearly labeled text heuristic, without a model tokenizer.
AI DevelopmentText Chunker
Split exact text into bounded character or word chunks with overlap.
AI DevelopmentRAG Chunking Preview
Inspect actual chunk slices, offsets and overlap before building retrieval.
AI DevelopmentChat Messages JSON Validator
Check a dated OpenAI Chat Completions text-only structure subset.
AI DevelopmentAI Function / Tool Schema Validator
Check a restricted OpenAI Chat Completions function-tool definition.
AI DevelopmentPrompt Version Comparison
Compare exact prompt lines without running or scoring prompts.
AI DevelopmentAI Request Payload Formatter
Format JSON independently, or check a named restricted request profile.
AI DevelopmentNo tools found
Try a format or task such as JSON, compare or encode.
Just what you came for.
Clear input, readable output and room to think.
Know where your data goes.
Run when you’re ready. Processing happens on this site; the application does not save inputs or outputs.
The details do the work.
Keyboard-friendly controls, light and dark themes, and layouts that travel with you.