Free Online Tools
THE FULL TOOLKIT
17 powerful tools. All free. All private. Zero data leaves your device.
Developer
6 tools
WASM
JSON Formatter & Validator
Parse, validate, and beautify JSON with tree-view visualization. Handles files up to 50MB.
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Base64 Encoder/Decoder
Encode strings, URLs, and files to Base64 or decode back. Supports URL-safe variant.
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WASM
Regex Tester & Visualizer
Test regular expressions with live match highlighting, group capture display, and match stats.
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WASM
Text Diff Checker
Side-by-side and inline text comparison with line-level diff highlighting.
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Timestamp/Epoch Converter
Convert between Unix timestamps and human-readable dates. Supports all timezones.
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WASM
HTML to JSON/CSV Converter
Extract tables from HTML and convert to structured JSON or CSV. Handles nested markup.
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Marketing & SEO
5 tools
Meta Tag Generator
Generate complete SEO meta tags including Open Graph, Twitter Cards, and canonical URLs.
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Robots.txt Generator
Build robots.txt files with a visual rule builder. Control Googlebot and custom crawlers.
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XML Sitemap Generator
Generate XML sitemaps with priority, changefreq, and lastmod settings. Export sitemap.xml.
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OG Image Resizer
Resize and crop images to perfect Open Graph (1200×630), Twitter Card, and LinkedIn dimensions.
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Keyword Difficulty Checker
Analyze keyword competitiveness with SERP data, search volume estimates, and difficulty scoring.
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Productivity
6 tools
WASM
PII / Text Redactor
Automatically detect and redact emails, phone numbers, SSNs, and credit cards. Runs locally.
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Word & Character Counter
Count words, characters, sentences, and paragraphs. Get reading time and keyword density.
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Secure Password Generator
Generate cryptographically secure passwords using browser-native CSPRNG. Entropy display.
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Unit Converter
Convert length, mass, temperature, area, volume, speed, and data units with high precision.
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WASM
Secure PDF Merger & Splitter
Merge or split PDFs with drag-and-drop page reordering. 100% client-side. Never uploaded.
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WASM
CSV to Excel/JSON Converter
Convert CSV to JSON, XLSX, or TSV. Custom delimiters, header detection, type inference.
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