A complete set of fast, private data tools for daily development work.

Convert, format, clean, decode, compare, and generate data without uploading files or creating an account. Every tool is designed for quick work in the browser.

Start with JSON to CSV Open Regex Generator

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20+practical tools

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Popular tools

Start with the tools people need most often for API data, spreadsheets, tokens, timestamps, and text.

JSON and CSV JSON Formatter

Format, validate, and minify JSON locally in the browser for API debugging and data cleanup.

Open tool JSON and CSV JSON to CSV Converter

Convert JSON arrays or nested objects to CSV in your browser. No upload, no signup, and easy to copy or download.

Open tool JSON and CSV CSV to JSON Converter

Convert CSV to JSON instantly in the browser with header detection and clean formatted output.

Open tool Regex Regex Generator

Generate practical regex patterns for email, URL, IPv4, UUID, slug, number, and custom text examples.

Open tool Encoding JWT Decoder

Decode JWT header and payload locally in your browser. No verification and no token upload.

Open tool Text utilities Timestamp Converter

Convert Unix timestamps, milliseconds, and ISO dates to readable UTC and local time.

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Complete tool directory

Every utility has a dedicated URL, related tools, FAQ, and browser-based workflow.

JSON and CSV JSON to CSV Converter

Convert JSON arrays or nested objects to CSV in your browser. No upload, no signup, and easy to copy or download.

JSON and CSV CSV to JSON Converter

Convert CSV to JSON instantly in the browser with header detection and clean formatted output.

JSON and CSV JSON Flattener

Flatten nested JSON into dot notation for CSV exports, BI imports, logs, and API debugging.

JSON and CSV JSON Formatter

Format, validate, and minify JSON locally in the browser for API debugging and data cleanup.

JSON and YAML JSON to YAML Converter

Convert JSON to readable YAML for config files, docs, and automation templates.

JSON and YAML YAML to JSON Converter

Convert simple YAML documents to JSON in the browser for API, config, and automation workflows.

JSON and CSV JSON Schema Generator

Generate a starter JSON Schema from sample JSON for validation, API docs, and data contracts.

CSV CSV Cleaner

Clean pasted CSV by trimming cells, removing empty rows, and normalizing headers in your browser.

CSV CSV Deduplicate

Remove duplicate rows from CSV locally in the browser and keep a clean export for spreadsheets or databases.

CSV CSV Column Extractor

Extract selected CSV columns by name or index for quick data prep, reporting, and API imports.

CSV and SQL CSV to SQL Generator

Convert CSV rows into SQL INSERT statements for quick database seeding and migration drafts.

CSV and SQL SQL Formatter

Format SQL queries with readable line breaks for SELECT, FROM, WHERE, JOIN, GROUP BY, and ORDER BY clauses.

Regex Regex Generator

Generate practical regex patterns for email, URL, IPv4, UUID, slug, number, and custom text examples.

Regex Regex Tester

Test regex patterns against sample text locally and inspect matches, groups, and indexes.

Regex Failregex Generator

Generate a Fail2ban-style failregex starter from a failed login log line and test the extracted host pattern.

Text utilities UUID Generator

Generate UUID v4 values in your browser for fixtures, tests, API examples, and database seeds.

Text utilities Timestamp Converter

Convert Unix timestamps, milliseconds, and ISO dates to readable UTC and local time.

Encoding JWT Decoder

Decode JWT header and payload locally in your browser. No verification and no token upload.

Encoding Base64 Encoder Decoder

Encode text to Base64 or decode Base64 back to text locally in your browser.

Encoding URL Encoder Decoder

Encode and decode URLs, query strings, and special characters locally in your browser.

Text utilities Slug Generator

Create clean URL slugs from titles for blogs, docs, ecommerce pages, product pages, and knowledge bases.

Text utilities Case Converter

Convert text between title case, lowercase, uppercase, camelCase, PascalCase, snake_case, and kebab-case.

Text utilities Text Diff Checker

Compare two text blocks line by line in your browser for docs, configs, prompts, and data exports.