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| free tools |
| for devs |
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Built for you.
Kept free on purpose.
Everything on this site is completely free — no ads, no paywalls, no "free tier" that cuts off after 3 uses. Just tools that work. If one of them saved you 10 minutes, consider buying a coffee. ☕
100
free tools
0
ads
0
paywalls
0
subscriptions
opens buymeacoffee.com · one-time · no account needed
a note from jasper
I build these tools in my spare time because I kept running into the same frustration: the best tools online are either paywalled after a few uses, covered in ads, or require an account just to merge two PDFs. That's annoying. So I built my own.
Everything here runs 100% in your browser — your files never touch a server, there's no tracking beyond basic Google Analytics, and nothing is ever going behind a paywall.
If something here saved you time or frustration, a coffee means a lot. It's what keeps the domain paid, the ideas coming, and the tools improving.
— Jasper, Belgium 🇧🇪
what your coffee keeps free
PDF Toolkit
Merge, split, compress, convert — unlimited, no watermark
Translator
100+ languages, auto-detect, TTS, history, shareable links
Webhook Tester
Capture HTTP requests, inspect headers & body, copy as cURL
Digital Sanitization
Audit your digital footprint, kill integrations, protect your online identity
Email Header Analyzer
Trace delivery path, check SPF · DKIM · DMARC, flag spoofing
Network Tools
IP, speed test, DNS, Base64, SHA hash, JWT decoder
ASCII Art Generator
Convert any image to ASCII art — no upload, 100% in-browser
ASCII Webcam
Live webcam to ASCII art — real-time, color mode, edge detection & snapshots
Meme Generator
Create memes instantly — custom text, fonts, colors. No upload, 100% client-side
Online Notepad
Syntax highlighting, multi-tab, import & export files
Chart Maker
Pie, bar & line charts — enter data, custom colors, export PNG & SVG
LinkedIn Formatter
Bold, italic, monospace Unicode styles for LinkedIn posts
Text Cleaner
Trim, align, find & replace, sort, dedup — live preview
Password Generator
Strong random passwords & passphrases — nothing sent anywhere
CVE Explorer
Real-time CVE search — NVD + CISA KEV + EPSS priority quadrant
Maps Location Importer
Paste locations → one-click links for Google Maps, Apple Maps & Waze
QR Code Generator
Instant QR codes for URLs, text, email, phone — download PNG
Image Resizer
Resize & compress images client-side — JPEG, PNG, WebP
HTML Colour Finder
All 140+ CSS named colours with HEX, RGB, HSL copy
IT Jargon Translator
Corporate tech speak ↔ plain English — 200+ terms
Cron Explainer
Plain-English cron expressions with next 10 run times
OG Image Previewer
Preview social share cards for Twitter, LinkedIn, Facebook
Favicon Generator
All favicon sizes from one image, with ready-to-paste HTML
robots.txt Generator
Visual builder for robots.txt — 27 bots, live preview
Days Between Dates
Exact days, business days, countdowns & date math
Azure Naming Convention
CAF-compliant Azure resource names — 40+ types, Terraform & Bicep export
Family Tree Builder
Build & visualise your family tree — multiple generations, print or export PDF
Seating Chart Maker
Drag & drop guests to tables — weddings, events & classrooms
Certificate Maker
6 templates, custom text & colours, download PDF or print — no watermark
Email Signature Builder
Professional HTML signatures for Outlook, Gmail & Apple Mail — no signup
Bingo Card Generator
Custom bingo cards for meetings, classrooms or parties — print or share
The Eraser
Scrub PII from documents — names, dates, IDs & BSN numbers automatically
PDF Redactor
Draw black boxes over sensitive content & export a true redacted PDF — text permanently removed
Lead Finder
Generate targeted B2B lead lists by role, industry & company size — export CSV instantly
Fake Data Generator
Generate up to 1,000 rows of realistic test data — CSV, JSON, SQL & TSV with 25+ field types
KQL Query Generator
44 production-ready Microsoft Sentinel KQL templates across 10 categories — export .kql
KQL Pipeline Visualizer
Paste any KQL query and see it broken down step-by-step as a colour-coded visual pipeline
Memento Mori
Visualise your life in weeks — a raw, honest look at time spent and time remaining
Lore Gen
Developer-themed placeholder text — Git commits, terminal logs & cyberpunk fragments
Pomodoro Timer
Focus timer with task list, sounds & breaks — no account, no ads, 100% private
Deep Work Log
Private Markdown work journal with auto-timestamps — log progress & export, 100% in-browser
Markdown Editor
Edit Markdown with instant live preview — toolbar, shortcuts, export HTML/MD/PDF
Kanban Board
Drag-and-drop task board — columns, cards, color labels, export JSON, 100% private
Focus Audio
White, Pink & Brown noise generator for deep work — procedural, private, no streaming
Word & Character Counter
Instant word count, character count, reading time, WPM & text density — 100% private
CA Policy Simulator
Simulate Entra ID Conditional Access policies — test user, app, location & device conditions before you deploy
Log Explorer
Drag & drop any log file — Apache, Nginx, systemd, JSON. Timeline, pattern detection & export. 100% client-side
Belgium X-Ray
Pick any Belgian municipality — income, poverty, population, inequality & 20 insights. Compare side by side. Powered by Statbel
Terminal Text Animator
Generate retro terminal typing animations from text or code — social-media ready, no upload
Windows 95 Screensaver
Relive classic Win95 screensavers in your browser — Mystify, Starfield, 3D Pipes, Flying Windows & more
Windows 98 Screensaver
Authentic Win98 screensavers — 3D Maze raycaster, 3D Pipes, Flying Objects, Flower Box, 3D Text & more
Winamp Web Player
Winamp 2.x web emulator — connect Spotify, spectrum analyser, 11-band EQ, draggable windows
Star Wars Opening Crawl
Cinematic Star Wars screensaver — animated starfield, STAR WARS logo flash, perspective Episode IV crawl, Star Destroyer fly-over
Copilot Prompts for IT Admins
54 Microsoft Copilot prompts for IT — Security Copilot, Intune, Entra ID, Azure, PowerShell & Helpdesk
8-Bit Studio
Game Boy style chiptune sequencer — 4 channels, step grid, piano roll, presets, export WAV. Make 8-bit loops
Pixel Editor
Browser pixel art editor — 8 tools, 48-colour terminal palette, undo/redo, zoom, mirror mode, export PNG
MorseChat
Text to Morse code with audio beeps, decode Morse, practice mode & tap key — 100% in-browser
DinoRun
ASCII endless runner — dodge cacti & pterodactyls, 3 lives, speed ramps up, high score saved locally
Color Palette Generator
Generate palettes, extract from images, WCAG contrast checker, color blindness sim, export CSS/Tailwind/PNG
Boulder Dash
Retro cave game — dig diamonds, dodge falling boulders & fireflies · 20 levels · C64 classic
NIS2 Compliance Checker
NIS2 scope checker & Article 21 gap analysis — essential/important entity, 55 controls, export PDF report
Radiation Flux
Worldwide ionizing radiation monitoring & solar flux telemetry dashboard — live NASA NOAA sensor data
Port Radar
Real-time vessel traffic & congestion monitoring for the Port of Antwerp-Bruges
Power Grid Belgium
Belgium national power grid monitor — live generation mix, consumption, cross-border flux via Elia
Cosmic Observatory
Free live NASA asteroids near Earth today, ISS tracker, Voyager distance, universe age & cosmic data
Satellite Fly-By Predictor
Free ISS & Starlink pass predictor — see exactly when satellites fly over your city with live 3D globe
Astronaut Chatter
NASA audio archive & ISS live stream — iconic mission recordings, era timeline, waveform visualizer & ambient mode
Deep Space Comms
Live NASA Deep Space Network dashboard — real-time antenna-to-spacecraft signals from Goldstone, Madrid & Canberra
Exoplanet Archive
Explore 5,000+ confirmed exoplanets — habitability scores, Earth comparisons, random planet generator
Satellite Launches
Free live NASA & SpaceX launch tracker with real-time countdowns, orbital belts & space debris
Vlaanderen Weer
Free live weather for all 300+ Flemish cities — friet index, BBQ meter, cycling score, beer pairing & Dutch mode
Subnet Calculator
IPv4/IPv6 subnet calculator — CIDR, wildcard masks, VLSM planner, cheat sheet & Bicep export
Image Watermark
Batch-add text or image watermarks — position, opacity, rotation, tiling, download as ZIP
Screenshot Beautifier
Add browser chrome, gradient backgrounds, shadows & padding to screenshots — export polished images
Photo Collage Maker
Drag photos into grid layouts — 2x2, 3x3, Pinterest-style. Resize, zoom & pan, export PNG/JPEG
Business Card Designer
Visual WYSIWYG card designer — front & back, templates, QR code, export print-ready PDF
Invoice Generator
Professional invoices with logo, tax, discounts — PDF export
Whiteboard
Infinite canvas — pen, shapes, text, sticky notes, eraser. Zoom, pan, undo/redo, export PNG/SVG
Recipe Scaler
Scale recipes, scan from photos with OCR, convert units
Loan Calculator
Mortgage calculator with amortization table and comparison
Expense Splitter
Split bills with friends — smart settlement, PDF export
Typing Speed Test
Check WPM & accuracy — Matrix rain, heatmap, leaderboard
Periodic Table
118 elements — phase slider, electron shells, quiz, trends
+ terminal games
🕹 Tetris
🐍 Snake
🏓 Pong
💣 Minesweeper
🔓 Breach (hacking sim)
🎯 IT Bingo
All playable from the terminal — type tetris, snake, etc.
what your support enables
Domain & hosting costs
Your coffee helps keep jasperbernaers.com online, ad-free and fast. Domain renewal, DNS, and Cloudflare services all have a cost — your support covers them so the site stays clean and accessible to everyone.
New tools & features
Every coffee funds a few hours of weekend building time. New tools, improvements to existing ones, bug fixes — it all takes time. Your support is what makes it possible to keep shipping free utilities instead of side projects that collect dust.
Cloudflare Workers
The backend for the webhook tester runs on Cloudflare Workers. The free tier covers basic usage, but as more people use the tool, scale costs add up. Your support keeps this and future backend-dependent tools running smoothly.
Zero ads — forever
There are no ads on this site and there never will be. No banners, no pop-ups, no sponsored content, no cookie consent walls for ad trackers. Your support is the only business model here — and that's by design.
Zero paywalls — forever
Every tool stays free, unlimited, for everyone. No "free tier" that cuts off after 3 uses, no premium upgrade prompts, no feature gates. If it's on this site, it works — fully — for free.
No pressure at all. Using the tools for free is completely fine —
that's exactly what they're here for.
Thank you — it genuinely means a lot. ☕