Tools
Browser-local tools for text encoding, formatting, conversion, and inspection. Your file is not uploaded to any external processing server.
What would you like to do today?
Encode
- Base64 decodeDecode a Base64 string back to human-readable text.
- Base64 encodeEncode text to a Base64 string for safe transport.
- HTML escapeEscape &, <, >, quotes for safe HTML text.
- HTML unescapeReverse the five-character HTML escape.
- URL decodeDecode a percent-encoded string.
- URL encodeEncode a string for a URL.
Format
Generate
- Cron expression generatorBuild a five-field cron expression from labelled schedule controls and presets.
- Markdown table generatorBuild a Markdown table in an editable grid with per-column alignment.
- Mermaid diagram generatorRender flowcharts, sequence diagrams, Gantt charts, and other Mermaid syntax as SVG.
- Random string and password generatorGenerate cryptographically random strings or multi-word memorable phrases with local controls.
Convert
- Epoch timestamp converterConvert local date-times to Unix seconds or milliseconds and back.
- HTML and Markdown converterConvert sanitized HTML to Markdown or render Markdown as sanitized HTML.
- JSON and CSV converterConvert tabular JSON and RFC-style CSV in either direction.
- Time zone converterConvert a date and time between cities or IANA time zones with daylight-saving and day-rollover context.
Inspect
- Hash and checksum generatorGenerate MD5, SHA-1, and SHA-256 digests for text or a local file.
- Regex tester and explainerTest JavaScript regular expressions with matches, groups, and plain-language cues.
- Text diff checkerCompare two texts line by line and show additions, removals, and unchanged lines.
- Text statisticsCount characters, words, graphemes, and lines.
Calculate
Also on Trendalyzer: PDF tools, Document to Markdown, and chart generators.