Utility tools
Encoders, formatters, generators — developer and productivity utilities that run entirely in your browser.
Create ZIP archives from multiple files or extract files from an existing ZIP — entirely in your browser.
Encrypt or decrypt any file with AES-256-GCM. Password-derived keys via PBKDF2 — all in your browser.
Generate QR codes from text or URLs and download as PNG or SVG.
Encode text or files to base64, or decode base64 strings back to text.
Count words, characters, sentences, paragraphs, and estimate reading time from any text.
Format, validate, and minify JSON with syntax highlighting.
Encode or decode URL components for safe use in links and APIs.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.
Generate placeholder text in paragraphs, sentences, or words.
Write Markdown and see a live HTML preview side by side.
Compare two blocks of text and highlight the differences line by line.
Convert text between UPPER, lower, Title, camelCase, snake_case, kebab-case, and more.
Generate strong, random passwords with customizable length, character sets, and strength indicator.
Convert between Unix timestamps and human-readable dates with a live clock and multiple formats.
Convert CSV data to JSON and back, with support for custom delimiters and header rows.
Test regular expressions with live matching, capture groups, and flag controls.
Decode JSON Web Tokens to inspect the header, payload, and signature.
Generate random UUID v4 identifiers individually or in bulk.
Convert numbers between decimal, hexadecimal, binary, and octal bases.
Format, indent, and minify SQL queries for better readability.
Parse cron expressions into plain English descriptions with next scheduled run times.
Paste or upload HTML and export it as a PDF with styles preserved.
Write or paste Markdown and export it as a clean, styled PDF document.
Generate a complete favicon package from any image — ICO, PNG, and Apple Touch Icon.
Generate harmonious color palettes or extract dominant colors from images.
Convert between units of length, weight, temperature, data size, time, area, and speed.
Focus timer with configurable work and break intervals, session tracking, and audio alerts.
Clean and minify SVG files by removing metadata, comments, and editor bloat.
Convert JSON arrays to CSV with automatic key flattening and proper escaping.
Generate SEO meta tags, Open Graph, and Twitter Card markup with live Google preview.
Build robots.txt rules visually with allow/disallow paths, sitemap, and crawl delay.
Calculate aspect ratios from dimensions, or resize maintaining a ratio. Common presets included.
Build cron expressions visually with presets, live description, and next run times.
Check WCAG contrast ratios between foreground and background colors with AA/AAA pass/fail.
Calculate tip and total with preset percentages, custom amounts, and bill splitting.
Convert between JSON and YAML formats instantly with syntax validation.
Format, prettify, and validate XML with customizable indentation.