tarsolutionLess friction.
More flow.
A considered collection of small, useful tools.
Built for the details that make your work move forward.
Tools for people.
Ready for agents.
Your workbench
33 tools, ready when you areJSON Formatter
Readable JSON, without the noise.
JavaScript Formatter
Modern JavaScript, clearly formatted.
Data Format Converter
JSON, YAML and properties. Connected.
Base64 Codec
Encode text. Inspect bytes. Decode safely.
Text Encoder
URL, HTML and ROT13 in one workspace.
Hex Explorer
A closer look at every byte.
Modbus Diagnostics
Registers and frames, decoded precisely.
UUID & Password
Fresh identifiers. Strong random passwords.
JWT Inspector
Claims, readable dates and signature checks.
Sensor Normalizer
Raw counts to meaningful measurements.
AGA8 Calculator
Real-gas properties, at base and line conditions.
Gas Mixture Comparator
Two compositions. Every difference.
XML → XSLT Transformer
XSLT 3.0, with room to see the result.
JSON Schema Validator
Find every mismatch, with precise paths.
XML Schema Validator
XML Schema 1.0 and 1.1, side by side.
Webhook Callback
An instant inbox for integration tests.
REST API Client
Send controlled API requests from the server.
Unicode Normalizer
Turn styled Unicode into searchable text.
Time Converter
Epoch, UTC and time zones in one place.
Markdown Editor
Write Markdown and preview the rendered document.
Mermaid Editor
Turn diagram text into a visual preview.
HTML Editor
Preview HTML and CSS in an isolated page.
Text Compare
Compare text, words, characters and structured documents.
Environment / Config Diff
Find configuration drift without exposing secret values.
Regex Editor & Analyzer
Match, explain and replace with the Python regex engine.
Cron Expression Builder
Build a schedule and inspect its next execution times.
DNS Diagnostics Suite
Inspect DNS answers and compare independent resolver observations.
DNS WHOIS / RDAP Lookup
Inspect domain, IP and ASN registration through IANA-discovered RDAP.
Web Metadata & Social Preview
Inspect SEO tags, icons and social sharing metadata.
JSON Data Generator
Create repeatable synthetic fixtures and validate them against a schema.
Certificate & CSR Toolkit
Inspect public certificates and generate development credentials locally.
Peppol Participant Lookup
Discover participant services in production and test SML.
SSO Service Client Tester
Inspect OIDC discovery, verify JWTs and test authorized service clients.
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No setup. No clutter.
Just the tool you need.