All Data Tools

TinyDataTool offers free, browser-based tools for CSV, JSON, and tabular data. Everything runs locally, so your data stays on your device.

Split files, merge datasets, remove columns, deduplicate rows, convert CSV ↔ JSON, format JSON, and more.

Each tool is focused, fast, and requires no uploads or account.

Browse the directory below to find what you need.

CSV Tools

Split CSV

Split a large CSV file into smaller files with a fixed number of rows.

 Merge CSV

Combine multiple CSV files into a single CSV.

 CSV Diff

Compare two CSVs by a key column: added, removed, and changed rows.

 CSV Column Remover

Remove one or more columns from a CSV file.

 CSV Column Splitter

Split one CSV into two files by selected columns.

 CSV Column Joiner

Combine multiple CSV columns into one with a custom delimiter.

 CSV Deduplicator

Remove duplicate rows from a CSV file.

 CSV Sorter

Sort CSV rows by one or more columns.

 CSV Row Filter

Filter CSV rows by column values or conditions.

 CSV Column Analyzer

Count distinct values, top frequencies, and basic numeric stats per column.

 CSV → Markdown

Build a GitHub-Flavored Markdown pipe table from CSV—header toggle, copy or download.

JSON Tools

JSON Viewer

View JSON in an expandable tree with formatted output for easy reading.

 JSON Validator

Validate JSON and find syntax errors with line and column details.

 JSON Schema Generator

Infer a draft JSON Schema from sample JSON with types and structure.

 JSON Diff

Compare two JSON documents structurally with paths for adds, removes, and changes.

 JSON Transformer

Extract by path, keep selected object keys, or filter an array of objects—then copy or download.

 JSON ↔ YAML

Convert JSON to YAML and YAML to JSON with clear errors—10 MB limit, runs locally.

 JSON ↔ TOML

Convert JSON to TOML and TOML to JSON in-browser—10 MB limit, bundled parser, private.

 JSON Formatter

Format and validate JSON data for readability.

 CSV → JSON

Convert CSV data into structured JSON.

 JSON → CSV

Convert JSON data into CSV format.

 JSON → TSV

Convert JSON data into tab-separated format.

 UUID Generator

Generate random UUID v4 values in bulk and validate UUID strings line by line.

 Unix Timestamp Converter

Convert epoch seconds or milliseconds to dates, parse ISO times back, and batch-convert log lines.

Converters

CSV → TSV

Convert comma-separated data into tab-separated format.

 TSV → CSV

Convert tab-separated data into CSV format.

 SQL result → CSV / JSON

Paste query result grids into JSON or CSV; pretty-print SQL for reading (no execution).

Text Tools

Text Diff Checker

Compare two text blocks and highlight additions, removals, and changed lines.

 Base64 Encoder / Decoder

Encode or decode Base64 strings with auto-detect mode and instant output.

 Regex Tester

Test regex patterns against text and highlight matches in real time.

 Text Case Converter

Convert text into uppercase, lowercase, title case, and sentence case instantly.

 Remove Duplicate Lines

Remove duplicate lines from text with options like case-sensitivity and preserving order.

 Sort Lines

Sort text lines alphabetically with options like numeric sort and case-sensitivity.

 Word, Line, and Character Counter

Count lines, words, and characters instantly in your browser.

 Find and Replace Text

Find and replace text quickly with options like case-sensitivity and replace all.

 Trim Whitespace

Trim whitespace per line and optionally collapse spaces or remove empty lines.

 URL Slug Generator

Create URL-safe slugs from titles with hyphens, accents, stop words, and length options.

 URL Encoder / Decoder

Encode text for URLs or decode percent-encoded strings back into readable text.

 HTML Encoder / Decoder

Encode HTML entities for safe display or decode entities back into readable text.