Fast tools that just run. No sign-up.
Everything runs locally in your browser. Free plan available, Pro removes all limits.
Developer
For developers and technical teams. JWT, cron, JSON, regex, hashes, HTTP codes.
- Developer
JWT Decoder and Encoder
Decode, verify and sign JSON Web Tokens. Everything runs locally in your browser.
- Developer
Cron Expression Builder
Translate cron expressions to plain English and preview the next runs.
- Developer
JSON Schema to TypeScript and Zod
Generate TypeScript interfaces and Zod schemas from JSON Schema.
- Developer
UUID, NanoID & ULID Generator
Generate cryptographically secure UUID v4, UUID v7, NanoID and ULID.
- Developer
Base64, Hex & URL Encoder
Encode and decode Base64, Base64 URL-safe, Hex and URL in one tool.
- Developer
Regex Tester & Debugger
Test regular expressions live, highlight matches and get pattern explanations.
- Developer
HTTP Status Code Reference
Every HTTP status code with plain-English explanations and live search.
- Developer
Color Converter & Contrast Checker
Convert HEX, RGB, HSL and OKLCH and check WCAG contrast in one view.
- Developer
Password Generator
Generate secure passwords with Web Crypto — with entropy rating.
- Developer
SHA Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes in your browser.
- Developer
Unix Timestamp Converter
Convert Unix seconds, milliseconds, ISO 8601 and local time live.
- Developer
JSON Formatter & Validator
Pretty-print, minify and validate JSON live — with structure analysis.
- Developer
URL Parser & Inspector
Break any URL into protocol, host, path, query parameters and fragment.
- Developer
Number Base Converter
Decimal, hex, binary, octal. Arbitrary-size integers via BigInt.
- Developer
IP Subnet Calculator (CIDR)
Network, broadcast, host range and subnet mask for any IPv4 CIDR.
- Developer
HTML Entities Encoder / Decoder
Encode text to HTML entities and decode back. Named, numeric, or minimal escaping.
- Developer
CSV ↔ JSON Converter
CSV to JSON and back. Comma, semicolon, tab, pipe. RFC 4180 compatible.
- Developer
Meta Tags & Open Graph Generator
Generate Open Graph, Twitter Card and canonical tags. With live social preview.
- Developer
CSS Gradient Generator
Build linear, radial and conic gradients. Up to 6 color stops.
- Developer
CSS Box-Shadow Generator
Build multi-layer shadows with live preview. Inset shadows supported.
AI
For anyone working with LLMs. Count tokens, estimate cost, clean Markdown.
- AI
LLM Token Counter and Cost Estimator
Count tokens for GPT-5, Claude 4.7 and Gemini 2.5. Estimate request cost in real time.
- AI
Markdown to HTML Converter
Convert Markdown to clean HTML and strip AI artifacts.
- AI
JSON Repair (LLM Output Fixer)
Automatically repair broken JSON from ChatGPT, Claude and Gemini output.
Text & Generators
Generators for passwords, UUIDs, Lorem Ipsum and placeholder text.
- Text & Generators
Lorem Ipsum Generator
Filler text in paragraphs, sentences or words — Latin, Hipster or Tech flavors.
- Text & Generators
Case Converter
Convert text to camelCase, snake_case, kebab-case, Title Case and more.
- Text & Generators
URL Slug Generator
SEO-friendly URL slugs from any text — with proper German transliteration.
- Text & Generators
Word and Character Counter
Count words, characters, sentences, paragraphs, reading time and most common words.
- Text & Generators
Text Diff / Compare
Compare two texts line by line with color-coded differences.
- Text & Generators
Markdown Table Generator
Paste from Excel or CSV — get a clean, aligned Markdown table back.
- Text & Generators
Percentage Calculator
X % of Y, increase, decrease, percent change. All in one.
- Text & Generators
BMI Calculator
Calculate Body Mass Index. Metric and imperial. WHO classification.
- Text & Generators
Age Calculator
Age in years, months, days. Next birthday with weekday.
Image
Convert images in the browser. HEIC, WebP, JPG, PNG.
Video
Video conversion with FFmpeg in the browser.
Media
Image and video tools.
Finance (DE)
German salary and tax tools with current tables.
Daily limit per tool. No account needed.
Unlimited use of one tool.
Every current and future tool.