Free Online Tools, All in One Place.

TechBist gives you free online tools that run entirely in your browser – no sign-ups, no downloads, no data sent to any server. Plus plain-language guides on AI, cybersecurity, and robotics.

Browse Tools

Free forever – no sign-up

6 Free Online Tools

Every tool runs fully in your browser – nothing you type is sent to a server or stored anywhere.

AI Productivity

AI Prompt Generator

Enter a topic, pick a goal and a tone, and get a complete, copy-ready prompt for any AI chatbot.










AI Hardware

LLM VRAM Calculator

Find out how much GPU memory you need to run a large language model locally. Enter the model size and pick a quantization level.





Your estimate will appear here.

Formula: VRAM ≈ parameters × bytes-per-parameter × 1.2 overhead for activations and runtime buffers. Add extra headroom for long context windows and your operating system.

Cybersecurity

Password Generator

Create a strong, random password instantly. Generated with your browser’s secure random number generator – it never leaves your device.






Cybersecurity

Password Strength Checker

Type a password to see how strong it is. The check happens only in your browser - your password is never sent or stored anywhere.


Start typing to see your strength rating.

Developer Tools

JSON Formatter and Validator

Paste JSON to format it neatly and check that it is valid - handy for AI agent configs, API payloads, and MCP settings files.






Developer Tools

Base64 Encoder and Decoder

Encode text to Base64 or decode Base64 back to text - useful for API tokens, data URIs, and debugging.







Simple by design

How It Works

1

Pick a tool

Choose from six free tools above - a prompt builder, a VRAM calculator, password tools, a JSON formatter, or a Base64 converter.

2

Use it instantly in your browser

Everything runs on your device the moment the page loads. No installs, no waiting, no accounts.

3

Copy your result

One click copies your password, prompt, or formatted data to the clipboard. No sign-up needed, ever.

Our promise

Why Readers Trust TechBist

Free forever

Every tool on this site is free, with no paywalls, no premium tiers, and no trials that expire.

No sign-up

Use everything anonymously. We never ask for your name, email, or any account details.

Private by design

Tools run entirely in your browser. Nothing you type - a password, a JSON payload, a prompt draft - is sent to a server or stored.

Plain-language guides

Our articles explain AI, security, and robotics in clear English, with practical examples you can actually use.

Deep dives, plain English

What We Cover

TechBist guides break down complex technology into explanations you can actually use.

AI Agents and Agentic AI

AI agents are systems that can plan, use tools, and complete multi-step tasks with minimal supervision. Our guides explain how agent frameworks work, what tool calling and memory mean in practice, and how to think about building with agents responsibly - from simple chatbots to multi-agent workflows.

Generative AI and Local LLMs

Large language models are moving from the cloud to your desk. We cover how LLMs work under the hood, what quantization means for quality and speed, and how to choose a model that fits your hardware - so you can run AI privately without sending your data anywhere.

Edge AI and AI Infrastructure

Running AI locally starts with the right hardware. We explain GPU VRAM requirements in plain terms, compare consumer GPUs for local inference, and demystify the infrastructure - from memory bandwidth to power draw - that decides what you can actually run.

Advanced Cybersecurity and Privacy

Passwords are giving way to passkeys, and threats keep evolving. Our security coverage focuses on what you can do today: strong unique passwords, password managers, two-factor authentication, and understanding how encryption protects your data.

Robotics and Physical AI

AI is leaving the screen and entering the physical world. We follow humanoid robots, warehouse automation, and embodied AI research - explaining the sensors, actuators, and learning methods that let machines perceive and move through real environments.

Good to know

Frequently Asked Questions

Are TechBist tools really free?

Yes. Every tool on this page is free forever, with no sign-up, no account, no trial period, and no hidden paywalls.

Is my data sent anywhere when I use a tool?

No. Every tool runs entirely in your browser using JavaScript on your own device. Nothing you type - a password, a JSON payload, a prompt draft - is sent to a server or stored anywhere.

Do the tools work on mobile?

Yes. The tools and the whole site are designed to work on phones, tablets, and desktops, with layouts that adapt to smaller screens.

Do I need an account to use TechBist?

No. There are no accounts on TechBist at all. Open a tool, use it, copy your result - that is the whole process.

Can I suggest a tool or a guide topic?

Absolutely. Email your idea to hello@techbist.com - we read every message and build the most-requested tools first.

Start Exploring TechBist

Jump straight into a free tool, or browse the topics we cover - from AI agents and local LLMs to cybersecurity and robotics.

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