JSON Repair
Fix malformed LLM JSON output, trailing commas, quotes, and arrays.
AI Developer Lab tools
Security, LLM cost, prompt engineering, RAG, MCP, agent, and developer utilities merged into Toolars as the professional tool family for builders.
Lab tools
Merged from Aixtral Lab
41Categories
Security to design utilities
7Local first
Run without upload where possible
82%Prompt Injection Scanner
Scan prompts for jailbreaks, instruction overrides, and hidden payloads.
LLM Cost Calculator
Estimate token cost across providers, models, context windows, and traffic.
MCP Server Builder
Build manifests, tool schemas, prompts, resources, and launch docs.
JSON Formatter
Format, validate, and beautify JSON data.
CSS Gradient Generator
Create implementation-ready gradients for UI surfaces.
Base64 Converter
Encode and decode Base64 text locally for API payloads, secrets, and debugging.
Case Converter
Convert text between camelCase, snake_case, kebab-case, PascalCase, and readable titles.
Slug Generator
Turn titles and labels into clean URL slugs with predictable separators.
Text Stats
Count words, characters, sentences, and reading time for pasted text.
UUID Generator
Generate and inspect UUID values locally for tests, fixtures, and identifiers.
URL Encoder
Encode, decode, and inspect URL components without sending text to a server.
HTML Entity Encoder
Escape and unescape HTML entities for safe snippets, docs, and debugging.
CSV to JSON Converter
Convert CSV rows into structured JSON locally with header handling and validation notes.
JSON to CSV Converter
Turn JSON arrays into CSV tables locally with escaped fields and row statistics.
JSON Diff Checker
Compare JSON payloads locally and review added, removed, and changed paths.
YAML Validator
Validate YAML syntax, indentation, and structure before config changes ship.
XML Formatter
Format or minify XML snippets locally for feeds, config files, and payload review.
Markdown to JSON Converter
Extract headings, lists, links, code blocks, and metadata from Markdown as JSON.
Diff Checker
Compare two text versions locally and review line-level additions and removals.
Text Diff
Compare text with whitespace, case, and trim options for local review.
URL Parser
Parse, decode, and inspect URL components with query, path, host, and protocol breakdowns.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal with validation notes.
File Size Converter
Convert file sizes across bytes, KB, MB, GB, TB, and PB with decimal and binary modes.
Chmod Calculator
Calculate Linux file permissions with octal, symbolic, and owner-group-other views.
IPv4 Subnet Calculator
Calculate IPv4 network address, broadcast, usable hosts, CIDR notation, and binary views.
Timestamp Converter
Convert Unix timestamps into readable dates and compare second or millisecond precision.
User Agent Parser
Parse browser User-Agent strings into browser, OS, device type, and rendering engine.
Color Converter
Convert colors between HEX, RGB, HSL, HSV, CMYK, and named formats.
CSS Border Radius Generator
Create CSS border-radius values for all corners with preview-ready output.
Hash Generator
Generate MD5, SHA1, SHA256, and SHA512 hashes for local text and payload checks.
JWT Decoder
Decode and inspect JSON Web Tokens locally without verifying or sending secrets.
Password Generator
Generate secure passwords with length, symbol, number, and custom rule controls.
Regex Tester
Test regular expressions with real-time matches, groups, flags, and sample text.
SQL Formatter
Format and beautify SQL queries with dialect and style options for review.
Code Minifier
Minify JavaScript, CSS, and HTML code to reduce file size before shipping.
Cron Explainer
Decode cron expressions into readable schedules with next execution hints.
Docker Compose Converter
Convert between docker run commands and docker-compose.yml service definitions.
Base64 Image Encoder
Encode images to Base64 data URLs or decode Base64 content back to previewable images.
QR Code Generator
Generate QR codes from text, URLs, or data with customizable color and size settings.
Token Counter
Estimate tokens, characters, and cost-oriented prompt size for LLM workflows.