Diamond 4c
Get a free API key + new tools as they ship
100 calls/day, no card, no spam. Built by one person, in public.
About Diamond 4C
When you need this task done in seconds, Diamond 4C delivers a clean, focused interface without the friction of a generic tool. The goal was to keep the path from "open the page" to "get the result" as short as possible. No mandatory account, no cookie wall, no upsell at every step. It pairs naturally with the other utility utilities here when you need to chain a quick workflow.
When you'd reach for Diamond 4C
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.
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 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.
Frequently asked about Diamond 4C
- Will Diamond 4C change my original file?
- Never. Diamond 4C only reads your input file and produces a new output file.
- Are my files uploaded to a server when I use Diamond 4C?
- Diamond 4C processes everything in your browser using local APIs. Your files never leave your device.
- Does Diamond 4C work on mobile?
- Yes, Diamond 4C is fully responsive and tested on iOS Safari and Android Chrome.
- Can I use Diamond 4C commercially?
- Yes. The output of Diamond 4C belongs entirely to you, with no licensing restrictions.
- Do I need to create an account to use Diamond 4C?
- No. Diamond 4C works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
