2FA TOTP Authenticator
Create/import secrets, generate codes offline, and backup.
Browse 29 of 29 tools. Everything runs locally in your browser unless noted.
Create/import secrets, generate codes offline, and backup.
Encode/decode instantly, including files, with copy buttons.
Estimate daily calories and plan macro targets quickly.
Generate palettes and check WCAG contrast for accessibility.
Human-friendly cron builder with next-run previews.
Drag-drop tables, map columns, and convert locally.
Peek at IP, DNS, and user‑agent. Optional server echo.
Create favicons and maskable icons from SVG templates.
Convert HEIC photos to JPG/PNG fully in-browser via WASM.
Compress, resize, and convert images locally in your browser. No uploads.
Extract text from images/PDF pages with Tesseract.js — offline.
Pretty‑print, validate, and inspect JSON with copy/share.
Write Markdown and export to clean HTML or PDF locally.
Find overlap hours and export invites with one click.
Drop an image, add captions, export locally (no uploads).
Amortization tables, monthly payments, and payoff planning.
Make shareable social images via Canvas/SVG — zero server.
Manipulate PDFs entirely in your browser — private and fast.
Create QR codes and scan with your camera — works offline.
Test patterns instantly with helpful hints and flags.
Check device pixel ratio, DPI, and color test patterns.
Create strong passwords and passphrases with live entropy.
Fill a template and export a clean PDF — no account.
Side-by-side diff with inline highlights and patch export.
Texte in natürlicher Sprache vorlesen und als Audio exportieren.
Fast, keyboard‑first conversions with explain‑the‑math.
Generate v4/v5 UUIDs and NanoIDs with copy & bulk modes.
Counts, reading time, and readability scores in real time.
Count days between dates and exclude weekends/holidays.