Text & Data
Format, convert, and analyze text and structured data locally.
ASCII Art Generator
Turn text or images into copyable ASCII art with custom fonts and sizing.
FreeLocalJSON Formatter
Format, minify, and validate JSON in the browser.
FreeLocalSSE Data Viewer
Paste raw Server-Sent Events and inspect each event with formatted JSON data.
FreeLocalYAML Formatter
Format and validate YAML locally without uploading.
FreeLocalJSON ↔ YAML Converter
Convert between JSON and YAML formats instantly.
FreeLocalCSV ↔ JSON Converter
Convert CSV rows and JSON arrays locally with quoted-field support.
FreeLocalTimestamp Converter
Convert Unix timestamps, ISO strings, and picked local date times both ways.
FreeLocalBase64 Encode / Decode
Encode or decode text using Base64 in the browser.
FreeLocalCron Expression Parse
Parse cron fields and preview upcoming run times locally.
FreeLocalURL Encode / Decode
URL-encode and decode strings for query parameters and paths.
FreeLocalChinese Pinyin
Convert Chinese text to ruby annotations or plain pinyin with phrase matching.
FreeLocalLine Deduper & Sorter
Remove duplicate lines, trim input, and sort lists locally.
FreeLocalRegex Tester
Test regular expressions with live match highlighting.
FreeLocalCode Highlighter
Paste or write code and preview clean syntax highlighting instantly.
FreeLocalMarkdown Editor
Edit Markdown with a live rendered preview.
FreeLocalRich Text Editor
Write rich text visually and export the HTML instantly.
FreeLocalText Processor
Apply common text cleanup transforms like single-line conversion and whitespace normalization.
FreeLocalText Diff
Compare two text blocks and highlight the differences.
FreeLocalMermaid Editor
Write and preview Mermaid diagrams with a live side-by-side editor.
FreeLocalText Statistics
Count visible characters, words, lines and UTF-8 bytes.
FreeLocalUnit Converter
Convert length, mass, temperature, data size and more.
FreeLocalNumber Base Converter
Convert exact integers between bases 2 through 36.
FreeLocalURL Parser
Inspect URL parts and repeated query parameters locally.
FreeLocalHTML Entity Encoder / Decoder
Encode and decode named and numeric HTML entities.
FreeLocalUnicode Escape Converter
Convert text to UTF-16 or code-point escapes and back.
FreeLocalXML Formatter
Validate, indent or compact XML without uploading it.
FreeLocalXML ↔ JSON Converter
Convert XML and JSON with attributes and optional node order.
FreeLocal