Practical tools.
No login, no ads, no paywalls.

Built because I needed them. Shared because they might help you.

  • Free
  • No ads
  • No signup
  • Privacy focused
  • Runs locally

About

MarPol is a non-commercial hobby project by a single developer: a growing set of small web tools I built for my own use and decided to share.

I'm self-taught, so every tool gets tested and reworked until it does what it should. Nothing here is for sale, and nothing is meant to keep you around longer than you need. A lot of time goes into every tool, but even so, something may still not work or look right. When that happens, I fix and improve it in my free time.

Contact

Questions, bug or translation reports, GDPR deletion requests: get in touch.

For information on how we handle your data, please read our Privacy Policy.

Tools

Privacy First
WasmFileHash logo

WasmFileHash - File Hash Generator & Checker

Lightning-fast file hash generator and verifier, powered by WebAssembly. Everything runs locally, nothing leaves your device. Formerly FastHash.

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Series Calculator logo

SeriesCalc (Series Calculator)

Plan your watching around a deadline or pace, check if you can binge a show in one sitting, and estimate episode counts for dubbed versions.

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Predico logo

Predico

Betting calculators and links to prediction and stats sites in one place.

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Prize Land Calculator logo

Prize Land Calculator

Calculate how many waterings you need and when you'll reach the AliExpress Prize Land reward.

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