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T TLKS

TLKS · 19 tools and counting

Developer tools that stay out of your way

A focused collection of utilities for the small jobs that interrupt real work: reading a broken JSON payload, decoding a token, checking a cron schedule, or wiring an API response into typed Go structs.

No account. No queue. Nothing uploaded.

Browse developer tools Try JSON to Go

Featured tools

The pages developers reach for most often, each documented with examples and error handling.

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JSON Formatter

Pretty-print, minify and validate JSON with exact error positions.

json formatter Open

YAML ↔ JSON Converter

Convert configuration between YAML and JSON in either direction.

yaml to json Open

Base64 Encoder / Decoder

Encode and decode Base64 with correct UTF-8 and URL-safe variants.

base64 encode Open

UUID Generator

Generate cryptographically random UUID v4 values in bulk.

uuid generator Open

Timestamp Converter

Convert between epoch time and readable dates in both directions.

unix timestamp converter Open

Regex Tester

Test regular expressions with live highlighting and capture groups.

regex tester Open

JWT Decoder

Inspect JWT header and claims, including expiry and audience.

jwt decoder Open

Cron Expression Parser

Explain any cron expression and list the next run times.

cron expression parser Open

Dockerfile Generator

Build a cache-friendly multi-stage Dockerfile for your runtime.

dockerfile generator Open

Kubernetes YAML Generator

Generate Kubernetes manifests with matching selectors and labels.

kubernetes yaml generator Open

JSON to Go

Turn a JSON payload into typed Go structs with correct json tags.

json to go Open

AI Error Explainer

AI

Explain an error message, its likely cause and how to fix it.

ai error explainer Open

AI Regex Generator

AI

Describe a pattern in plain English and get a tested regular expression.

ai regex generator Open

Explore by category

Four focused areas. Start with the utility you need today, then move sideways into the cluster it belongs to.

10 tools

Developer Tools

Small, sharp utilities for the tasks you hit every single week.

Browse Developer Tools 5 tools

DevOps & Cloud Tools

Generators and calculators for configuration you should not write from memory.

Browse DevOps 1 tools

Go Tools

Go code generation for the boilerplate nobody wants to type.

Browse Go 3 tools

AI Developer Tools

AI assistance you can use without an account, and upgrade only if you want to.

Browse AI Tools

Why these tools are different

Most online utilities are wrapped in advertising, popups and mandatory accounts, and some quietly send your input to a backend you cannot inspect. TLKS takes the opposite approach: keep the page small, keep the logic on your machine, and explain clearly what each tool does.

That constraint makes the tools fast, makes them work offline once loaded, and makes them safe for payloads you would not otherwise paste into a website.

Client-side by default

Formatting, encoding, hashing and parsing run in your browser. There is no upload step and no queue, so you can paste internal payloads without hesitation.

One job per page

Each tool does one thing, documents what it does, and explains the errors you will hit. No dashboards, no configuration maze, no feature screens you will never open.

Output you can trust

Results come from standard platform APIs such as JSON.parse, Intl and SubtleCrypto, so what you see here is exactly what your runtime will do.

All tools

Every tool on TLKS, grouped by the category it belongs to.

Frequently asked questions

What is TLKS?

TLKS is a small collection of free developer tools: JSON, YAML and XML formatters, encoders, generators, a regex tester, DevOps generators and Go helpers. Everything runs in your browser.

Do I need an account to use these tools?

No. There is no sign-up, no login and no usage limit on the client-side utilities.

Is my data sent to a server?

Client-side tools process everything locally. Only the AI tools can optionally send input, and only when you connect your own API key.

Which tools are most popular?

The JSON Formatter, JSON to Go converter, Cron Expression Parser and Regex Tester are the most frequently used pages on the site.