DEV Community: crypto plato

A fast, free regex tester that works offline

crypto plato — Thu, 25 Jun 2026 19:08:35 +0000

Quick one: if you need a regex tester, here's a free one that loads instantly
and works without an account — Regex Tester.

Using it

Open Regex Tester.
JavaScript RegExp tester — inline match highlighting, capture groups, token explanation.
Copy the result. Done — no signup, no upsell.

Because it's a single self-contained page, you can save it and use it
offline (handy on planes / locked-down networks). And since it's all
client-side, your input never leaves the tab — verify in DevTools → Network.

Part of platotools.com, a growing set of no-nonsense browser-side tools. If you
find a case it handles badly, tell me — I'd like to fix it.

A fast, free hex to rgb that works offline

crypto plato — Tue, 23 Jun 2026 19:11:08 +0000

Quick one: if you need a hex to rgb, here's a free one that loads instantly
and works without an account — Color Picker.

Using it

Open Color Picker.
HEX ↔ RGB ↔ HSL ↔ CMYK conversion, WCAG contrast checker, color blindness sim.
Copy the result. Done — no signup, no upsell.

Part of platotools.com, a growing set of no-nonsense browser-side tools. If you
find a case it handles badly, tell me — I'd like to fix it.

A fast, free uuid generator that works offline

crypto plato — Sun, 21 Jun 2026 18:23:04 +0000

Quick one: if you need a uuid generator, here's a free one that loads instantly
and works without an account — UUID Generator.

Using it

Open UUID Generator.
UUID v4, UUID v7, ULID, NanoID — generate up to 100 at once, browser-side.
Copy the result. Done — no signup, no upsell.

Part of platotools.com, a growing set of no-nonsense browser-side tools. If you
find a case it handles badly, tell me — I'd like to fix it.

AI Tokens & Cost: a ai token counter without the ads, accounts, or uploads

crypto plato — Fri, 19 Jun 2026 19:01:20 +0000

Most ai token counter sites share three annoyances: they're ad-heavy, they push
you to sign up, and they upload whatever you paste. AI Tokens & Cost is a
deliberate counter to all three.

	Typical online ai token counter	AI Tokens & Cost
Your data	uploaded to a server	stays in your browser
Account	often required	none
Speed	ad-laden, slow	single static page
Cost	freemium	free

Count tokens across GPT-5, Claude, Gemini + estimate API spend. It's one client-side HTML file — open DevTools → Network and you'll
see it makes no request with your input.

https://tokens.platotools.com/ · part of platotools.com (all single-purpose, all browser-side).
Bug reports welcome.

Text Diff: a Text Diff without the ads, accounts, or uploads

crypto plato — Sat, 13 Jun 2026 18:15:56 +0000

Most Text Diff sites share three annoyances: they're ad-heavy, they push
you to sign up, and they upload whatever you paste. Text Diff is a
deliberate counter to all three.

	Typical online Text Diff	Text Diff
Your data	uploaded to a server	stays in your browser
Account	often required	none
Speed	ad-laden, slow	single static page
Cost	freemium	free

Side-by-side and inline diff — 100% browser-side, no upload. It's one client-side HTML file — open DevTools → Network and you'll
see it makes no request with your input.

https://diff.platotools.com/ · part of platotools.com (all single-purpose, all browser-side).
Bug reports welcome.

Why I stopped pasting into online Encode / Decode tools

crypto plato — Fri, 12 Jun 2026 19:12:41 +0000

Every online Encode / Decode tool I used had the same quiet flaw: whatever you
paste gets POSTed to someone's server. For a Encode / Decode, that paste is often exactly
the sensitive thing — a token, a config, an API response.

So I built Encode / Decode to not do that. Base64, URL, hex, HTML, JWT, ROT13 — auto-detect what you paste — and it runs entirely in your
browser, so there's nothing to send and nothing to breach.

You don't have to take my word for it: open DevTools → Network, use the tool,
and watch the tab stay empty. One HTML file, View-Source-able.

https://encode.platotools.com/

It's part of platotools.com — a set of single-purpose, client-side dev tools.
Feedback and edge-case bug reports very welcome.

TIL you can do Markdown Preview entirely client-side

crypto plato — Sun, 07 Jun 2026 18:27:15 +0000

Sharing a small thing I made: Markdown Preview — Markdown to HTML converter with live split-pane preview — 100% browser-side, nothing uploaded.

The interesting bit isn't the feature list, it's that the whole thing is one
HTML file with no backend. A Markdown Preview doesn't actually need a server, so this one
doesn't have one. No upload, no account, no tracking beyond a privacy-friendly
analytics beacon.

If that's useful to you: https://md.platotools.com/. More like it at platotools.com.

.gitignore Generator: a .gitignore Generator without the ads, accounts, or uploads

crypto plato — Sun, 07 Jun 2026 17:56:55 +0000

Most .gitignore Generator sites share three annoyances: they're ad-heavy, they push
you to sign up, and they upload whatever you paste. .gitignore Generator is a
deliberate counter to all three.

	Typical online .gitignore Generator	.gitignore Generator
Your data	uploaded to a server	stays in your browser
Account	often required	none
Speed	ad-laden, slow	single static page
Cost	freemium	free

Generate .gitignore files for 40+ languages — combine templates, preview, copy or download. 100% browser-side. It's one client-side HTML file — open DevTools → Network and you'll
see it makes no request with your input.

https://gitignore.platotools.com/ · part of platotools.com (all single-purpose, all browser-side).
Bug reports welcome.

A fast, free Unicode Table that works offline

crypto plato — Sun, 07 Jun 2026 17:30:31 +0000

Quick one: if you need a Unicode Table, here's a free one that loads instantly
and works without an account — Unicode Table.

Using it

Open Unicode Table.
Search Unicode characters by name or codepoint — copy as U+XXXX, HTML entity, CSS escape. 100% browser-side.
Copy the result. Done — no signup, no upsell.

Part of platotools.com, a growing set of no-nonsense browser-side tools. If you
find a case it handles badly, tell me — I'd like to fix it.

Why I stopped pasting into online Fake Data Generator tools

crypto plato — Sun, 07 Jun 2026 16:00:52 +0000

Every online Fake Data Generator tool I used had the same quiet flaw: whatever you
paste gets POSTed to someone's server. For a Fake Data Generator, that paste is often exactly
the sensitive thing — a token, a config, an API response.

So I built Fake Data Generator to not do that. Generate fake names, emails, UUIDs, addresses — custom columns, CSV/JSON export. 100% browser-side — and it runs entirely in your
browser, so there's nothing to send and nothing to breach.

You don't have to take my word for it: open DevTools → Network, use the tool,
and watch the tab stay empty. One HTML file, View-Source-able.

https://faker.platotools.com/

It's part of platotools.com — a set of single-purpose, client-side dev tools.
Feedback and edge-case bug reports very welcome.

A fast, free Epoch & Timestamps that works offline

crypto plato — Sat, 06 Jun 2026 18:13:56 +0000

Quick one: if you need a Epoch & Timestamps, here's a free one that loads instantly
and works without an account — Epoch & Timestamps.

Using it

Open Epoch & Timestamps.
Unix timestamp converter with date math + batch + code snippets.
Copy the result. Done — no signup, no upsell.

Part of platotools.com, a growing set of no-nonsense browser-side tools. If you
find a case it handles badly, tell me — I'd like to fix it.

countdown-timer: a countdown-timer without the ads, accounts, or uploads

crypto plato — Fri, 05 Jun 2026 07:19:08 +0000

Most countdown-timer sites share three annoyances: they're ad-heavy, they push
you to sign up, and they upload whatever you paste. countdown-timer is a
deliberate counter to all three.

	Typical online countdown-timer	countdown-timer
Your data	uploaded to a server	stays in your browser
Account	often required	none
Speed	ad-laden, slow	single static page
Cost	freemium	free

countdown timer. It's one client-side HTML file — open DevTools → Network and you'll
see it makes no request with your input.

https://countdown.platotools.com/ · part of platotools.com (all single-purpose, all browser-side).
Bug reports welcome.