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ToolBunny

188+ free tools for developers, designers & creators.

188+ Tools
Active: Web Development
20tools·Web Development
SQL Query Formatter

Format, beautify, and standardize your SQL queries. Instantly turn unreadable, minified, or messy SQL statements into beautifully indented and color-coded code.

Web DevelopmentOpen
Boilerplate Generator

Quickly generate boilerplate code for various project setups, such as Dockerfiles, GitHub Actions, and more. Save time on initial configuration.

Web DevelopmentOpen
Algorithm Visualizer

Visualize sorting algorithms like Bubble Sort and Merge Sort to understand how they work step-by-step. An educational tool for developers and students.

Web DevelopmentOpen
QR Code Generator

Create custom QR codes for URLs, text, Wi-Fi access, and more. Our generator allows you to customize the size and color of your QR code. Once generated, you can download the high-resolution QR code as a PNG file, ready for print or web use.

Web DevelopmentOpen
UUID Generator

Generate universally unique identifiers (UUIDs) with a single click. This tool creates Version 4 (random) UUIDs, which are essential for databases, software development, and any system requiring unique IDs. Instantly get a new UUID whenever you need one.

Web DevelopmentOpen
Base64 Encode/Decode

A developer-focused tool to encode plain text into a Base64 string or decode a Base64 string back to its original text form. Essential for handling data in various web applications, APIs, and data transmission protocols where binary data needs to be safely transmitted as text.

Web DevelopmentOpen
HTML/CSS/JS Minifier & Beautifier

Optimize your web code by minifying HTML, CSS, and JavaScript files to reduce their size and improve load times. Alternatively, use the beautifier to format and indent your code, making it more readable and easier to debug. An essential tool for any web developer.

Web DevelopmentOpen
JWT Decoder

Decode and inspect JSON Web Tokens (JWTs) with ease. Paste a JWT into the tool to see its header and payload in a readable JSON format. This is extremely useful for developers when debugging authentication and authorization issues in applications using JWTs.

Web DevelopmentOpen
URL Encoder / Decoder

Encode strings into a URL-safe format or decode URL-encoded strings back to their original form. This tool handles special characters to ensure your URLs are valid and work correctly. Essential for web developers and anyone working with query strings or dynamic URLs.

Web DevelopmentOpen
HTML Entity Encoder / Decoder

Convert special characters (like <, >, &) into their corresponding HTML entities to prevent them from being interpreted as HTML code. You can also decode HTML entities back into their original characters. A crucial tool for displaying code snippets or special characters on web pages safely.

Web DevelopmentOpen
Prompt Variations Generator
New

Transform any AI prompt into multiple targeted variations across tone, length, format, persona, specificity, and speed. Perfect for prompt engineers, AI writers, and power users who want to explore the best framing for any instruction.

Web DevelopmentOpen
AI Output Diff Space
New

Compare generational variance between multiple AI response runs side-by-side. Spot differences, measure similarity scores, and analyse statistical variance across ChatGPT, Claude, Gemini and any LLM output.

Web DevelopmentOpen
Smart Prompt Chunking Station
New

Automatically split large documents and prompts into clean chunks that fit inside strict LLM context windows. Supports GPT-4o, Claude, Gemini and more with token estimation, overlap, prefix/suffix injection, and JSON export.

Web DevelopmentOpen
Chat History Payload Formatter
New

Convert standard conversational text files and chat transcripts instantly into structural API JSON code arrays for OpenAI, Anthropic, Gemini, Ollama, and JSONL fine-tuning.

Web DevelopmentOpen
Vision API Image Optimizer
New

Scale, down-sample, compress, and adjust dimensions for visual parsing engine inputs (GPT-4o, Claude 3.5 Sonnet, Gemini 1.5). Estimate vision tokens and generate Base64 API payloads.

Web DevelopmentOpen
Hyperparameter Visualizer
New

Map context weights, learning rates, LoRA rank & alpha, batch size, and temperature interactively to conceptualize fine-tuning parameter scales and VRAM footprints.

Web DevelopmentOpen
Local Embedding Similarity Calculator
New

Run 100% client-side cosine similarity comparisons over text arrays and raw high-dimensional vector embeddings safely in your browser.

Web DevelopmentOpen
JSON Structured Schema Lint Space
New

Verify complex programmatic structural configurations instantly against JSON Schema parameters, infer schemas from data, and generate TypeScript types.

Web DevelopmentOpen
CSV Few-Shot Dataset Factory
New

Format explicit user and system message pairs smoothly from CSV files into OpenAI JSONL, HuggingFace, Alpaca, and few-shot prompt datasets.

Web DevelopmentOpen
System Parameter Cheat Sheet
New

Quick-reference directory mapping system constraints, context limits, max tokens, pricing, and API parameter keys across global AI providers.

Web DevelopmentOpen