Simple tools for concrete work

Convert JSON to CSV and CSV to JSON in one tool.

Compare two datasets to find added, removed and changed records and download a report.

Check syntax, locate errors, and format or minify JSON.

Format and validate XML in your browser.

Convert both ways while retaining structures and value types.

Convert XML to JSON and JSON to XML with attributes and text.

Run XPath on XML and inspect nodes, attributes and values.

Query JSON with paths, wildcards and safe filters.

Encode and decode Unicode text or files as Base64.

Encode or decode URL parameters and components.

Generate UUID v4 and v7 values in bulk and in your preferred format.

Convert Unix timestamps, milliseconds, ISO 8601 and readable dates.

Calculate SHA-1, SHA-256, SHA-384 and SHA-512 hashes.

Read the header and payload of a JSON Web Token.

Test patterns, flags, groups and replacements in real time.

Compose five-field cron expressions and preview upcoming runs.

Add work ranges, enter your lunch break and find when to leave based on your target hours.

Paste an HL7 pipe message and inspect or edit fields, repetitions, components and subcomponents with standard labels.

Redact personal data in selected PID fields and doctor details in PV1-7 without uploading the message to a server.

Generate HL7 v2 ADT, QBP, RSP, ORM and ORU sample messages.

Format queries in the most common SQL dialects.

Turn a list of numbers or text into an IN clause ready to copy.