Valid Hexadecimal
Get a free API key + new tools as they ship
100 calls/day, no card, no spam. Built by one person, in public.
About Hex Valid
Hex Valid solves a specific problem that comes up daily for anyone dealing with developer and design work: doing it once, fast, without an account. Processing runs locally in your browser using modern Web APIs. Nothing is uploaded, nothing is logged, and there is no quota to worry about for casual use. If you find yourself doing this regularly, the rest of the developer suite covers most adjacent tasks with the same approach.
When you'd reach for Hex Valid
You need to handle a one-off task right before a meeting and don't have time to install anything.
Anyone working remotely on a borrowed or restricted machine.
Open the page, get the result, paste it into your doc — under a minute.
You're cleaning up a folder of files that accumulated over a project and need to standardize them.
Designers, writers, and developers wrapping up deliverables.
Drop each file in, copy the output, move on.
You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.
Marketers and ops people whose primary tool is metered.
Stay productive without burning credits.
You're on a public or shared machine and don't want to leave traces of what you're working on.
Travelers, contractors, anyone working from a friend's computer.
Nothing is uploaded, nothing persists if you're not signed in.
Frequently asked about Hex Valid
- Does Hex Valid work on mobile?
- Yes, Hex Valid is fully responsive and tested on iOS Safari and Android Chrome.
- What browsers does Hex Valid support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
- Are my files uploaded to a server when I use Hex Valid?
- Hex Valid processes everything in your browser using local APIs. Your files never leave your device.
- Is Hex Valid really free?
- Yes — Hex Valid is free for unlimited personal use, with no account required and no watermark on the output.
- Can I use Hex Valid commercially?
- Yes. The output of Hex Valid belongs entirely to you, with no licensing restrictions.