Coulombs Law
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100 calls/day, no card, no spam. Built by one person, in public.
About Coulomb
Most online tools for this task bury what you need behind ads and forms. Coulomb takes the opposite approach: load the page, do the job, leave. 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 is one of about a hundred utility tools that share the same philosophy: do one thing, do it well, get out of your way.
When you'd reach for Coulomb
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.
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.
Frequently asked about Coulomb
- Is Coulomb really free?
- Yes — Coulomb is free for unlimited personal use, with no account required and no watermark on the output.
- Will Coulomb change my original file?
- Never. Coulomb only reads your input file and produces a new output file.
- Can I use Coulomb commercially?
- Yes. The output of Coulomb belongs entirely to you, with no licensing restrictions.
- Are my files uploaded to a server when I use Coulomb?
- Coulomb processes everything in your browser using local APIs. Your files never leave your device.
- Do I need to create an account to use Coulomb?
- No. Coulomb works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
