Alle Anleitungen

50 Anleitungen, um das Beste aus kostenlosen Online-Werkzeugen herauszuholen — Schritt-für-Schritt-Anleitungen, Erklärungen, Vergleiche und Tipps.

how-to

How to Encode and Decode Base64 — Vollständige Anleitung

Learn what Base64 encoding is, how it works, when to use it, and how to encode and decode Base64 in your browser —no tools or signup needed.

comparison

Base64 vs Hex-Codierung: Welche sollten Sie verwenden?

Compare Base64 and Hex encoding across efficiency, readability, use cases, and trade-offs — and learn when to pick each for binary-to-text encoding.

explanation

Farbformate erklärt: HEX, RGB und HSL

Understand the three most common web color formats —HEX, RGB, and HSL —how each represents color, when to use which, and how to convert between them.

comparison

CSV vs TSV: Welches Trennzeichenformat sollten Sie verwenden?

Compare CSV and TSV across delimiter choice, escaping, compatibility, and use cases — and learn when to pick each for tabular data.

reference

DNS-Einträge erklärt: A, AAAA, MX, TXT, CNAME, NS

A complete reference guide to DNS record types —A, AAAA, MX, TXT, CNAME, and NS —with examples, use cases, and how to look them up.

explanation

Hash-Algorithmen erklärt: MD5, SHA-1, SHA-256, SHA-512

Understand cryptographic hash functions: differences between MD5, SHA-1, SHA-256, and SHA-512, and which to use for integrity checks vs password storage.

how-to

Wie man Compress Images Without Losing Quality

Step-by-step guide to compressing images (JPEG, PNG, WebP) to reduce file size without visible quality loss using a free browser-based tool.

how-to

Wie man Compress PDF Files Step by Step

Step-by-step guide to compressing PDF files to reduce file size using a free browser-based tool. Learn compression levels and what affects PDF size.

how-to

Wie man Convert Colors Between HEX, RGB, and HSL

Step-by-step guide to converting colors between HEX, RGB, HSL, and other formats using a free browser-based tool. Learn when to use each format.

how-to

Wie man Convert CSV to JSON Step by Step

Step-by-step guide to converting CSV data to JSON using a free browser-based tool. Learn header handling, nested structures, and common pitfalls.

how-to

Wie man Convert Markdown to HTML Step by Step

Step-by-step guide to converting Markdown text to HTML using a free browser-based tool. Learn syntax, extensions, and common use cases.

how-to

Wie man Convert Text to Binary and Back Step by Step

Step-by-step guide to converting text to binary (0s and 1s) and decoding binary back to text using a free browser-based tool. Learn ASCII and UTF-8.

how-to

Wie man Convert Unix Timestamps to Human-Readable Dates (Step-by-Step)

Step-by-step guide to converting Unix timestamps (epoch) to human-readable dates and back using a free browser-based tool. Learn seconds vs milliseconds.

how-to

Wie man Decode JWT Tokens and Inspect Claims Safely

Step-by-step guide to decoding JWT (JSON Web Token) tokens and inspecting their header and payload claims using a free browser-based tool. Learn security boundaries.

how-to

Wie man Encode and Decode Base64 Strings Step by Step

Step-by-step guide to encoding text to Base64 and decoding Base64 back to text using a free browser-based tool. No upload, no signup, fully private.

how-to

Wie man Encode and Decode URLs Step by Step

Step-by-step guide to URL encoding (percent-encoding) and decoding using a free browser-based tool. Learn why and when to encode URLs.

how-to

Wie man Extract Text from PDF Files Step by Step

Step-by-step guide to extracting text content from a PDF file using a free browser-based tool. Learn scanned vs digital PDFs.

how-to

Wie man Format and Validate JSON Data Step by Step

Step-by-step guide to formatting (beautifying) and validating JSON data using a free browser-based tool. Catch syntax errors, minify, and pretty-print JSON instantly.

how-to

Wie man Generate Hash Values Step by Step

Step-by-step guide to generating cryptographic hash values (SHA-256, SHA-1, MD5) using a free browser-based tool. Learn use cases and security tradeoffs.

how-to

Wie man Generate Secure Passwords Step by Step

Step-by-step guide to generating strong, random passwords using a free browser-based tool. Learn password length, character sets, and security best practices.

how-to

Wie man Generate UUIDs Step by Step

Step-by-step guide to generating UUIDs (Universally Unique Identifiers) using a free browser-based tool. Learn UUID v4, v1, and when to use each.

how-to

Wie man Merge PDF Files Step by Step

Step-by-step guide to merging (combining) multiple PDF files into one using a free browser-based tool. Learn ordering and page ranges.

how-to

Wie man Resize Images Step by Step

Step-by-step guide to resizing images (change width and height) using a free browser-based tool. Learn aspect ratio, upscaling, and common dimensions.

how-to

Wie man Split PDF Files Step by Step

Step-by-step guide to splitting a PDF file into multiple parts or extracting specific pages using a free browser-based tool.

how-to

Wie man Test Regular Expressions Step by Step

Step-by-step guide to testing and debugging regular expressions using a free browser-based tool. Learn flags, capture groups, and common patterns.

how-to

Wie man Use a Color Picker to Find Colors from Any Pixel

Step-by-step guide to using a color picker to find the exact color (HEX, RGB, HSL) of any pixel in an image or on screen using a free browser-based tool.

explanation

JSON-Formatierung Best Practices: Lesbar, gültig und effizient

Understand the conventions for formatting JSON: indentation, key ordering, minification, trailing commas, and when to pretty-print vs minify.

explanation

JSON verstehen: Ein Anfängerleitfaden zur Formatierung und Validierung

Lernen Sie, was JSON ist, seine Syntaxregeln, häufige Datentypen und wie man JSON-Daten mit kostenlosen Online-Tools formatiert und validiert.

comparison

JSON vs XML: Welches Datenformat sollten Sie verwenden?

Compare JSON and XML across syntax, verbosity, parsing speed, ecosystem support, and use cases — and learn when to pick each.

comparison

JSON vs YAML: Welches Konfigurationsformat sollten Sie verwenden?

Compare JSON and YAML across readability, features, use cases, and trade-offs — and learn when to pick each for configuration and data interchange.

how-to

Wie man Decode a JWT and Inspect Its Claims Safely

Learn the three-part structure of a JSON Web Token, how to decode the header and payload without verifying, and why decoding is not the same as trusting.

comparison

Markdown vs HTML: Welches sollten Sie für Inhalte verwenden?

Compare Markdown and HTML across readability, expressiveness, learning curve, use cases, and rendering —and learn when to pick each (or both).

problem-solving

Passwortsicherheit: So generieren, speichern und prüfen Sie starke Passwörter

Solve the most common password security problems: generating strong passwords, hashing them correctly, avoiding reuse, and auditing existing credentials.

comparison

PDF-Kompressor vs Bild-Kompressor: Welchen benötigen Sie?

Compare PDF and Image compression across targets, techniques, quality trade-offs, and use cases — and learn which tool to use for your file size problem.

reference

Reguläre Ausdrücke Spickzettel: Syntax, Flags und häufige Muster

Complete regex reference: metacharacters, character classes, quantifiers, anchors, groups, flags, and ready-to-use patterns for emails, URLs, and dates.

how-to

Wie man Convert Unix Timestamps to Human-Readable Dates

Learn what a Unix timestamp is, how to convert it to a human-readable date and back, and how to handle time zones correctly when working with epoch time.

reference

Einheitenumrechnung Referenz: Länge, Masse, Temperatur und Fläche

A complete reference of conversion factors for length, mass/weight, temperature, and area, with exact formulas and worked examples for each.

how-to

How to Encode and Decode URLs — Vollständige Anleitung

Learn what URL encoding (percent-encoding) is, why it is required, and how to encode and decode URLs in your browser —no signup, fully private.

comparison

UUID v1 vs v4 vs v5: Welche Version sollten Sie verwenden?

Compare UUID versions 1, 4, and 5: how each is generated, their trade-offs in uniqueness, ordering, and determinism, and which to pick for your use case.

explanation

Was ist Base64-Codierung? Eine vollständige Erklärung

A clear explanation of what Base64 encoding is, how it works, its character set, and why it is not encryption.

explanation

Was ist CSV? Eine vollständige Erklärung kommagetrennter Werte

A clear explanation of what CSV (Comma-Separated Values) is, its syntax rules, common variations, and when to use CSV vs JSON.

explanation

Was ist Hashing? Eine vollständige Erklärung von Hash-Funktionen

A clear explanation of what hashing is, properties of cryptographic hash functions, common algorithms (SHA-256, MD5), and use cases.

explanation

Was ist JSON? Eine vollständige Erklärung der JavaScript Object Notation

A clear explanation of what JSON (JavaScript Object Notation) is, its syntax, data types, history, and why it replaced XML as the web's data format.

explanation

Was ist ein JWT? Eine vollständige Erklärung von JSON Web Tokens

A clear explanation of what a JWT (JSON Web Token) is, its three-part structure, how it is used for authentication, and security considerations.

explanation

Was ist Markdown? Eine vollständige Erklärung der leichtgewichtigen Auszeichnungssprache

A clear explanation of what Markdown is, its syntax, why it is popular for documentation, and how it converts to HTML.

explanation

Was ist ein regulärer Ausdruck? Eine vollständige Erklärung

A clear explanation of what a regular expression (regex) is, its syntax, common use cases, and why regex is powerful but hard to read.

explanation

Was ist ein Unix-Zeitstempel? Eine vollständige Erklärung der Epoch-Zeit

A clear explanation of what a Unix timestamp is, the Unix epoch, seconds vs milliseconds, and the Year 2038 problem.

explanation

Was ist URL-Codierung? Eine vollständige Erklärung der Prozent-Codierung

A clear explanation of what URL encoding (percent-encoding) is, which characters need encoding, and how it works.

explanation

Was ist eine UUID? Eine vollständige Erklärung universell eindeutiger Bezeichner

A clear explanation of what a UUID is, its versions (v1, v4, v5), structure, collision probability, and when to use UUIDs.

how-to

Wie man Count Words, Characters, and Reading Time Accurately

Learn how word and character counts are defined across languages, how to estimate reading time, and how to use a counter to hit limits for essays, tweets, and meta descriptions.