Flowtooly
Free online utility tools
Flowtooly launched on December 21, 2025 with 2 votes, #5,292 of 11,628 launches that month.
What it does
Flowtooly provides free online calculators, converters, and utility tools for developers, finance, math, images, PDFs, and more.
57 free tools for developers, finance, image, PDF, text, and math. Runs locally in your browser. Decode JWT tokens instantly in your browser. View header and payload for debugging and inspection without uploading any data. Calculate loan installments, total interest, and repayment using flat or effective (annuity) interest methods. Fast, accurate, and privacy-friendly. Convert images between popular formats such as JPG, PNG, WebP, and AVIF instantly in your browser. Calculate your exact age in years, months, and days using your date of birth. Includes next birthday countdown and total days alive. Test and debug regular expressions instantly in your browser. Supports flags, match…from flowtooly.com
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Source: Product Hunt launch ↗
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the whole month →- GP
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