Free Online Tools
Professional-grade PDF tools, file converters, developer utilities, and business calculators. All free, no installation required, processed securely in your browser.
Popular Tools
Most frequently used tools across all categories
Merge PDF
PopularCombine multiple PDF files into a single document. Drag and drop to reorder pages.
Image to PDF
PopularConvert images (JPG, PNG) to PDF format. Combine multiple images into one PDF.
JSON Formatter
PopularFormat, validate, and beautify JSON data. Instantly detect syntax errors.
Base64 Encoder
PopularEncode and decode text or files to Base64 format. Essential developer utility.
URL Encoder/Decoder
PopularEncode and decode URLs, query strings, and URI components safely in your browser.
JWT Decoder
PopularDecode JWT headers and payloads locally. Inspect claims without sending tokens to a server.
JSON to TOON
PopularConvert JSON to token-efficient TOON format for LLM prompts. Reduce tokens by 30-60%.
Vibe Security Scanner
PopularComprehensive website audit & vibe analysis. 70+ security, SEO, performance, and accessibility checks with AI-powered insights.
AdSense Compatibility Checker
PopularCheck if your website is ready for Google AdSense approval. 16+ checks across content, technical, UX, policy, and domain criteria.
PDF Tools
Convert, merge, compress, and manage PDF files with our free online PDF tools.
File Converters
Convert images, documents, text, and files between different formats instantly.
Image to PDF
PopularConvert images (JPG, PNG) to PDF format. Combine multiple images into one PDF.
PNG to JPG
Convert PNG images to JPG format. Reduce file size and improve compatibility.
Text Case Converter
Convert text between uppercase, lowercase, title case, camelCase, snake_case, and kebab-case.
Developer Tools
Essential developer utilities for formatting, encoding, hashing, tokens, IDs, and data manipulation.
JSON Formatter
PopularFormat, validate, and beautify JSON data. Instantly detect syntax errors.
Base64 Encoder
PopularEncode and decode text or files to Base64 format. Essential developer utility.
URL Encoder/Decoder
PopularEncode and decode URLs, query strings, and URI components safely in your browser.
JWT Decoder
PopularDecode JWT headers and payloads locally. Inspect claims without sending tokens to a server.
UUID Generator
Generate random UUID v4 values in bulk. Copy clean IDs for databases, tests, and apps.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes for text locally.
YAML to TOML
Convert YAML configuration files to TOML format. Perfect for config file migration.
JSON to TOML
Convert JSON files to TOML configuration format. Simple and accurate conversion.
JSON to TOON
PopularConvert JSON to token-efficient TOON format for LLM prompts. Reduce tokens by 30-60%.
YAML to TOON
Convert YAML to token-efficient TOON format for LLM prompts. Reduce tokens significantly.
Vibe Security Scanner
PopularComprehensive website audit & vibe analysis. 70+ security, SEO, performance, and accessibility checks with AI-powered insights.
AdSense Compatibility Checker
PopularCheck if your website is ready for Google AdSense approval. 16+ checks across content, technical, UX, policy, and domain criteria.