Access our comprehensive collection of free online tools. From JSON formatting to data validation, we've got everything you need for development and productivity.
13 tools available
Format, validate, and beautify JSON data with syntax highlighting, error detection, and comparison features.
Calculate time differences, days between dates, business days, age calculator, and countdown timers. Perfect for project planning.
Calculate prices per unit, convert measurements, compare costs across currencies. Perfect for shopping, cooking, and business.
Generate UUIDs, cryptographic hashes, random strings, passwords, API keys, JWT tokens, and encode/decode data formats.
Monitor website availability, check response times, and track uptime statistics with real-time status monitoring.
Comprehensive file analysis tool that extracts metadata, technical details, security information, and complete file properties.
Professional data visualization tool for CSV and Excel files. Upload, parse, preview, filter, and analyze spreadsheet data with advanced features.
Minify HTML, CSS, and JavaScript code for production. Remove whitespace, comments, and optimize code size for faster loading.
All-in-one text toolkit with case converter, live word/character/sentence counter, specific term counter, cleanup tools, find/replace, and file upload support.
Create ZIP from uploaded files, add optional password protection, upload ZIP files to inspect content, and unlock password-protected archives.
Validate JSON, XML, YAML, TOML, INI, JavaScript, TypeScript, Python, HTML, SQL, and regex with detailed diagnostics.
Encrypt and decrypt text or files using repeating-key byte transformation with custom keys, random 512-bit key suggestions, and local output downloads.
Test mouse and keyboard input in real time with click/scroll counters, per-key counts, reset controls, clipboard copy, and exportable reports.
We're constantly adding new tools to our collection. Have a suggestion? Let us know what tools you'd like to see next.
Common questions about our free online tools
Yes, all tools on sourcecodestack are completely free with no hidden charges, no premium tiers, and no usage limits. We support the platform through non-intrusive advertising.
No. Every tool works instantly in your browser without any sign-up, login, or registration. Just open the tool and start using it.
Your data is completely safe. All tools process files locally in your browser using client-side JavaScript. Your files never leave your device and are never uploaded to our servers. We have zero access to your content.
Our tools work on all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. We recommend using the latest version of your browser for the best experience.
Yes, all tools are fully responsive and work on smartphones and tablets. Some complex tools work best on larger screens but remain functional on mobile.
We regularly add new tools based on community feedback and developer needs. You can suggest new tools through our contact page, and we prioritise the most-requested features.
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