      )  )  )  )
     (  (  (  (
    ._____________.
    |  ~~~~~~~~~~~  |
    |  free tools   |
    |  for devs     |
    |_______________|
          |__|

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. ☕

23

free tools

0

ads

0

paywalls

0

subscriptions

☕ Buy me a coffee

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

Merge, split, compress, convert — unlimited, no watermark

100+ languages, auto-detect, TTS, history, shareable links

Capture HTTP requests, inspect headers & body, copy as cURL

Email Header Analyzer

Trace delivery path, check SPF · DKIM · DMARC, flag spoofing

IP, speed test, DNS, Base64, SHA hash, JWT decoder

ASCII Art Generator

Convert any image to ASCII art — no upload, 100% in-browser

Syntax highlighting, multi-tab, import & export files

LinkedIn Formatter

Bold, italic, monospace Unicode styles for LinkedIn posts

Trim, align, find & replace, sort, dedup — live preview

Password Generator

Strong random passwords & passphrases — nothing sent anywhere

QR Code Generator

Instant QR codes for URLs, text, email, phone — download PNG

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

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

+ 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 — keeping jasperbernaers.com ad-free and fast

New tools — every coffee funds a few hours of weekend building time

Cloudflare Workers — the backend for the webhook tester (free tier, but scale costs)

Zero ads forever — your support is the only business model here

Zero paywalls forever — every tool stays free, unlimited, for everyone

No pressure at all. Using the tools for free is completely fine —
that's exactly what they're here for.

☕ Buy me a coffee

Thank you — it genuinely means a lot. ☕