8 categories · 100% free
Free online tools that just work.
FreeToolApp is a fast, private, and free collection of online tools for developers, security engineers, writers, and everyone else. No sign-up, no tracking, runs in your browser.
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Developer Tools
Format, convert, encode, and inspect code & data.
Security Tools
Hashing, calculators, and analysis for security work.
Text Tools
Transform, count, and clean up text instantly.
PDF Tools
Merge, split, compress, and convert PDFs.
Finance Tools
Calculators for loans, taxes, and conversions.
AI Tools
Prompt helpers, token counters, and AI utilities.
Image Tools
Compress, convert, resize, and crop images.
Utility Tools
Everyday helpers: generators, pickers, and more.
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Free online tools, built for speed and privacy
FreeToolApp is a growing collection of free online tools for developers, security engineers, writers, and everyday users. Every tool runs entirely in your browser — there's no sign-up, no upload, and no tracking. Your data never leaves your device.
From formatting JSON and decoding tokens to converting text, calculating finances, and editing images, our tools are designed to be fast, accurate, and accessible on any device. Each tool ships with clear instructions and answers to common questions so you can get your work done quickly.