Free Offline Developer, AI & Text Tools

The private, in-browser Repomix & Gitingest web alternative. Pack entire multi-file project directories into AI-ready XML or Markdown prompt bundles for Claude 3.7, ChatGPT o3, and DeepSeek with live token budgeting.

Calculate exact VRAM requirements, KV cache scaling, and GPU compatibility (RTX 4090, 70B Q4, Mac M3/M4) for running local LLMs.

Validate, lint, and test Ollama Modelfiles online. Check missing FROM declarations, parameter ranges, stop sequences, and Go template formatting with 1-click auto-repair.

Validate, sanitize, and convert fine-tuning datasets for OpenAI, Anthropic, Alpaca, ShareGPT, and DPO. Catch malformed lines, missing assistant replies, and split train/val sets in your browser.

Inspect, detect, and safely test API keys for OpenAI, Claude, Gemini, DeepSeek, Groq, OpenRouter, and 20+ AI providers with zero server logging.

Calculate exact break-even velocity, dollar savings, and 5-minute TTL expiration risks for Claude 3.7, GPT-4o, and DeepSeek R1 prompt caching.

Calculate live tokens and API pricing for GPT-6, Claude Sonnet 5, Gemini 3.8, o4-mini, o3, DeepSeek R1, Grok 2, and Mistral.

Master prompt engineering with visual system prompt building, negative constraints, and few-shot examples for LLMs.

Instantly fix broken AI JSON, markdown fences, Python booleans, single quotes, and truncated brackets.

Convert prompts between OpenAI, Anthropic, ChatML, and Llama 3 with dynamic variable interpolation.

Build Model Context Protocol (MCP) tool schemas, OpenAI function specs, and TypeScript types.

Build valid claude_desktop_config.json files for Claude Desktop, Cursor, and Windsurf.

Visualize document chunking strategies (Recursive, Token, Markdown, Sentence) for vector search.

Build and validate standardized /llms.txt and /llms-full.txt files for AI crawler discovery.

Visual builder for Claude Code, Antigravity, and autonomous agent SKILL.md specification files with YAML frontmatter.

Generate standardized AGENTS.md, CLAUDE.md, and .cursorrules instruction files for AI coding agents.

Generate optimized .cursorrules and .windsurfrules files for your AI IDE with custom system prompts.

Decode Base64 strings and Data URIs back to downloadable PNG, JPG, WebP, SVG, and GIF images.

Convert Base64 strings into viewable, downloadable PDF documents in an embedded viewer.

Decode Base64 strings to readable plain text and ASCII with full UTF-8 and emoji support.

Convert Base64 audio strings into playable sound in an HTML5 player and download MP3, WAV, and OGG.

Convert Base64 video strings into playable video in an HTML5 player and download MP4/WebM files.

Decode HTTP Authorization: Basic headers to extract usernames, passwords, and API credentials.

Decode Base64 strings into formatted Hexadecimal byte arrays with custom spacing and case.

Reconstruct and download any binary file (ZIP, DOCX, XLSX, PDF, binary) from Base64 strings.

Encode PNG, JPG, SVG, WebP, and GIF images to Base64 Data URIs, HTML img tags, and CSS rules.

Convert PDF documents into clean Base64 encoded strings and Data URIs for REST APIs and storage.

Encode plain text, UTF-8 strings, and emojis into standard and URL-Safe Base64 strings.

Convert MP3, WAV, and OGG sound files into Base64 Data URIs for web inlining and APIs.

Convert MP4 and WebM video clips into Base64 Data URIs to inline video animations into HTML.

Convert raw Hexadecimal byte sequences into compact Base64 strings for REST APIs.

Convert any binary file (ZIP, DOCX, XLSX, PDF) into Base64 strings and Data URIs.

Instantly convert bulk CSV data to perfectly formatted Markdown tables, or Markdown tables to CSV.

Easily extract all URLs and metadata from your XML sitemap into a structured CSV file for SEO audits.

Compare text, JSON payloads, and source code files side-by-side with real-time visual diffing.

Calculate octal numbers (755, 644, 600, 777), symbolic notation (rwxr-xr-x), and copy bash commands.

Clean SVG markup and convert vector icons into React JSX components, Vue templates, and CSS Data URIs.

Convert docker run commands to clean docker-compose.yml and reverse Compose YAML to terminal CLI commands instantly.

Convert docker-compose.yml stacks into production-ready Kubernetes manifests (apps/v1 Deployment, Service, PVC, ConfigMap, Ingress) with zero CLI.

Calculate netmasks, wildcard masks, usable host IP ranges, and broadcast IPs for VPC & Docker planning.

Generate SHA-256, SHA-512, MD5 hashes and HMAC webhook signatures (Stripe, GitHub) with Web Crypto.

Decode and inspect JSON Web Tokens (JWT) offline without sending private credentials to a server.

Translate 5-field cron schedules into plain English and simulate upcoming execution timestamps across timezones.

Generate time-sortable UUID v7 and ULID batches. Inspect existing UUID v7 to extract embedded creation timestamps.

Convert raw cURL commands from DevTools into clean JavaScript Fetch, Axios, Python Requests, Go, Rust, and PHP.

Diff .env vs .env.example, sort environment variables, check unquoted values, and generate safe templates.

Scrub session cookies, Bearer tokens, and confidential API keys from .har network captures before sharing.

Comprehensive Markdown syntax cheat sheet and live preview editor for GFM tables, code blocks, and READMEs.

Visual builder for syntax-highlighted markdown code blocks, tables, GFM callouts, and GitHub README files.

Visual Discord markdown guide and live chat generator. Format spoilers, ANSI colored text, subtext (-#), and timestamps.

Simulate W3C preflight OPTIONS checks, diagnose Access-Control header errors, and generate backend fixes.

Sign and verify webhook HMAC-SHA256 signatures for Stripe, GitHub, Shopify, and Slack 100% in-browser.

Test Nginx location blocks and evaluate routing precedence rules (=, ^~, ~, ~*) in real time.

Transform OpenAPI 3.0 and Swagger JSON specs into strongly-typed TypeScript models and fetch clients.

Crop, resize, and align photos for 50+ countries (US 2x2", Schengen 35x45mm, India, UK) with biometric guides and printable 4x6" photo sheets.

Compress images to any exact file size (10MB to 1MB, or down to 20KB, 50KB, 100KB) with instant batch processing and smart quality scaling.

Free CBM calculator to compute cubic meters, cubic feet (CBF), and volumetric weight for shipping.

Create non-expiring custom QR codes for URLs, WiFi networks, text, and email with custom colors.

Scan and decode QR codes from images, screenshots, clipboard paste (Ctrl+V), or live camera.

Generate cryptographically secure passwords, memorable Diceware passphrases, and numeric PINs.

Calculate percentages, % increase/decrease, markup, and discount sale prices with step-by-step formulas.

Convert Digital Data (MB/GB/TB), Length, Weight, Temperature, and Time in a live matrix.

Boost daily productivity with 25/5 interval focus timers, audio chimes, checklists, and stopwatches.

Count words, characters, sentences, and paragraphs in real-time.

Free online grammar, spelling, and passive voice checker.

Inspect if a word or phrase reads identically backward as forward.

Convert text to UPPERCASE, lowercase, Title Case, and more.

Repeat any text, word, or emoji up to 10,000 times.

Reverse text, word order, characters, or line sequence.

Instantly find and remove duplicate lines from your text.

Sort text lines alphabetically or by length.

Generate standard dummy placeholder text for website mockups.

Generate random words, sentences, or alphanumeric character strings.

Edit, sync, time-shift, and convert SRT, VTT, and SBV subtitle files with live video preview.

Interactive step-by-step diagnostic tool to undo commits, recover deleted branches, and fix Git mistakes.

Safe interactive terminal command generator for git reset --soft, mixed, hard, and commit amends.

Safely undo already-pushed commits and merge pull requests forward without rewriting shared branch history.

Recover accidentally deleted local branches (git branch -D) in seconds using git reflog queries.

Roll back accidental pushes safely with --force-with-lease, git revert, and remove leaked API secrets.