QR Code Generator

Generate QR codes for URLs, text, WiFi credentials, contacts, email, phone, and SMS. Customize colors, download as PNG/SVG, and track scans.

URL Redirector

Create custom short links with personalized redirect messages. Track clicks and manage your redirects with custom slugs and expiration dates.

Data Formatter

Format, minify, and validate JSON, XML, YAML, TOML, SQL, and CSV. Convert between formats instantly with syntax validation.

Favicon Generator

Create favicons from text, images, or emojis. Generate ICO and PNG files in all sizes. Download complete favicon package for your website.

Investment Calculator

Calculate compound interest, SIP returns, retirement planning, and financial goals. Visualize investment growth with interactive charts.

Digital Painting Tool

Professional digital canvas for creative artwork and illustration. Free online painting tool with brushes and colors.

PDF Editor & Annotator

Advanced PDF editor for annotations, text editing, highlighting, and document modification. Free online PDF editing tool.

File Format Converter

Convert between image, audio, video, document, and data formats. Support for JPG, PNG, MP3, MP4, PDF, DOCX, CSV, and many more formats.

Floor Plan Editor

Design renovation and reconstruction plans. Draw floor plans with color-coded walls: green for new construction, red for demolition.

Difference Checker

Compare two texts and highlight additions and deletions at the character level.

File Compressor

Compress multiple files into ZIP archives. Create and download compressed files for easy sharing and storage.

Markdown Editor

Write and preview Markdown with live rendering. Split-view editor with syntax highlighting, table support, and export to HTML/PDF.

Text Editor

Full-featured text editor supporting plain text, Word documents (DOCX), and OpenDocument (ODT) files. Rich text formatting and file conversion.

Video Editor

Professional video editing suite with timeline editing, filters, effects, text overlays, and multi-format export. Trim, split, merge, and enhance your videos.

Image Editor

Compress, resize, crop, rotate, and convert images. Support for PNG, JPG, WebP, GIF, BMP. Reduce file size while maintaining quality.

CryptoMaster

Advanced encryption and decryption tool supporting multiple algorithms. Hash generation, password encryption, and secure data processing.

Commander & Slave

Master productivity with mind-body separation. Command tasks as the strategic mind, execute them as the disciplined body.

WorkTracker

Log your daily work hours with descriptions. View monthly calendar, generate reports, and export to CSV or PDF.

Magic Extension

Track your browsing habits with powerful analytics. Monitor time spent, page visits, and domain activity with beautiful charts and insights.

AI Chatbot

Chat with an intelligent AI assistant. Get help with questions, coding, writing, explanations, and more. Powered by DeepSeek AI.

PasteShare

Share screenshots and text instantly! Just Ctrl+V to paste an image or text and get a shareable link. Auto-expiring for privacy.

Screen Share

Share your screen instantly with a simple link. No downloads needed - peer-to-peer WebRTC streaming. Perfect for presentations and remote support.

Microphone Test

Test your microphone online. Check audio levels, visualize waveforms and frequencies, record test clips for playback quality check.

Webcam Test

Test your webcam online. Check resolution, frame rate, brightness, and capture photos. Switch cameras and test different resolutions.

Speaker Test

Test speakers and headphones online. Check stereo channels, frequency response from 20Hz to 20kHz, bass test, and audio quality.

Keyboard Test

Test your keyboard online. Check if all keys work, test anti-ghosting, N-key rollover, and see key history with visual feedback.

IP Lookup

Look up any IP address or domain. Get geolocation, ISP info, DNS records, reverse DNS, VPN/proxy detection, and view location on map.

Crawler Exposer

Real-time bot and scanner analytics dashboard. Monitor crawlers, detect honeypot hits, and analyze web traffic from automated visitors.

Privacy Scrub

Remove EXIF metadata from photos. Strip GPS location, camera info, and personal data. 100% client-side - files never leave your browser.

Fakturace

Generátor faktur pro neplátce DPH. Správa odběratelů, ARES vyhledávání, QR platba, PDF export. 100% v prohlížeči.

Personal Notes

Create, organize, color-code, and pin your notes. Synced to your TechTools account. Free and private.

Diagrams

Create flowcharts, org charts, network diagrams and more. Drag-and-drop shapes, connect nodes, export to PNG/SVG. No signup required.

ISDOC Viewer

View and edit Czech ISDOC electronic invoices. Upload .isdoc/.isdocx files, inspect all fields, edit inline, and export. Supports v5 & v6.

News / Zprávy

Tech, AI, business and science news. Available in English and Czech. Updated every 30 minutes, free and ad-free.

Streamer

Watch free movies instantly. Modern streaming interface with simple admin panel for uploading content. No registration required.

Public Chat

Join the public chat room! Chat with anyone online in real-time. No registration required - just pick a username and start chatting.

Live Q&A

Engage your audience with real-time Q&A sessions. Create events, collect questions, and let participants upvote the most important ones.

CronLoop

Autonomous AI code generator. Claude Code running in loops via cron on a separate VM, automatically generating new ideas and implementations.

Kanban

Visual project management board. Organize tasks with drag-and-drop columns, track progress, and boost team productivity.

Watchdog

Monitor car ads on Bazos.cz and Sauto.cz. Get notified about new listings matching your criteria. Never miss a deal again.

Animal Atlas

Explore 50+ dog breeds with detailed profiles, photos, temperament traits, and care requirements. Your ultimate breed encyclopedia.

Launchpad

Submit and discover tools. No registration, no CAPTCHA. Bot and AI friendly API for automated submissions. Launch your startup instantly.

Mushroom Atlas

Complete mushroom foraging encyclopedia with 50+ species profiles, identification wizard, seasonal calendar, safety guides, recipes, and interactive quiz.

Space Invaders

Classic arcade action with online multiplayer leaderboard. Register to save your high scores and compete with players worldwide!

Empire Conquest

Build your empire, expand territory, and conquer the map! Online multiplayer strategy game with resource management, army building, and real-time territory conquest.

Baron Fight

League of Legends themed clicker game. Build your champion army, collect Riot Points, and defeat the mighty Baron Nashor!

Minecraft Server

Join our modded Minecraft 1.21.11 Forge server! Survival gameplay with custom Weapon Leveling mod. Connect at mc.techtools.cz

Poker Clock

Free poker tournament clock with one-click start. 50,000 chips, automatic blind levels, audio alerts. Perfect for home games!