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Privacy-first toolkit · 40 utilities

Online web & security tools

40 free utilities that run entirely in your browser. No uploads, no accounts, no tracking of your input.

100% client-side processing

Security & Network

3 tools
001 Hash Calculator Generate MD5, SHA-1, SHA-256, SHA-384 & SHA-512 digests instantly. 002 Password Generator Create strong, random passwords with a live strength meter. 003 JWT Debugger & Inspector Decode, inspect claims, and verify HMAC signatures locally in your browser.

Web & Developer

3 tools
004 JSON Formatter & Validator Beautify, validate and minify JSON with clear error messages. 005 Regex Tester Test regular expressions against sample text with live matches. 006 UUID Generator Generate RFC-4122 v4 UUIDs in bulk, ready to copy.

Text & Data

2 tools
007 Base64 Encoder / Decoder Encode text to Base64 or decode it back, with URL-safe support. 008 Age Calculator & Chronological Milestone Engine Calculate your exact age in years, months, weeks, days, minutes, and ticking seconds with zero server tracking.

Image & PDF

10 tools
009 Image Converter Convert images between PNG, JPEG and WebP in your browser. 010 Image Compressor Shrink JPEG and WebP image file size with a live quality slider. 011 Image Resizer Resize or scale an image to exact pixel dimensions in your browser. 012 Image Cropper Crop an image to any region or aspect ratio in your browser. 013 Image Studio Crop, resize, rotate and convert an image in one place — one upload. 014 Transparent Background Click a color to make it transparent and export a PNG — in your browser. 015 AI Background Remover Remove the background from a photo automatically — in your browser, no upload. 016 QR Code Generator Create a QR code from any text or URL and download it as PNG or SVG. 017 PDF Merger & Splitter Merge multiple PDF files into one, reorder pages, and extract page ranges client-side. 018 Image to PDF Converter Convert PNG, JPEG, and WebP images into standardized A4 or Letter PDF documents.

AI & Prompts

22 tools
019 LLM Token Counter & Pricing Estimator Count prompt tokens across GPT-4o, Claude, and DeepSeek with live API cost estimation. 020 AI Prompt Generator Turn a rough idea into a clear, structured prompt for any AI. 021 AI Prompt Optimizer Clean up and structure an existing prompt you paste in. 022 AI Prompt Checker Lint a prompt for vagueness, missing role, context or format. 023 ChatGPT Prompt Generator Build a structured, ChatGPT-optimised prompt from your idea. 024 Claude Prompt Generator Build a structured, Claude-optimised prompt from your idea. 025 Gemini Prompt Generator Build a structured, Gemini-optimised prompt from your idea. 026 DeepSeek Prompt Generator Build a structured, DeepSeek-optimised prompt from your idea. 027 Copilot Prompt Generator Build a structured, Copilot-optimised prompt from your idea. 028 Midjourney Prompt Generator Compose a Midjourney image prompt with the right syntax and parameters. 029 Stable Diffusion Prompt Generator Compose a Stable Diffusion image prompt with the right syntax and parameters. 030 Flux Prompt Generator Compose a Flux image prompt with the right syntax and parameters. 031 AI Art Prompt Generator Compose a an AI art model image prompt with the right syntax and parameters. 032 Sora Prompt Generator Write a cinematic Sora video prompt — shot, motion and style. 033 Runway Prompt Generator Write a cinematic Runway video prompt — shot, motion and style. 034 Veo 3 Prompt Generator Write a cinematic Veo 3 video prompt — shot, motion and style. 035 Chain of Thought Prompt Generator Generate a Chain of Thought prompt with the right reasoning scaffold. 036 Few-Shot Prompt Generator Generate a Few-Shot prompt with the right reasoning scaffold. 037 Tree of Thought Prompt Generator Generate a Tree of Thought prompt with the right reasoning scaffold. 038 Zero-Shot Prompt Generator Generate a Zero-Shot prompt with the right reasoning scaffold. 039 JSON Prompt Generator Produce a prompt serialised as JSON. 040 XML Prompt Generator Produce a prompt serialised as XML.