Tools
Small tools I built for everyday dev tasks. Everything runs locally in your browser. No data is sent to any server.
Encoding
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URL
Encode and decode URLs using encodeURIComponent and decodeURIComponent.
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Base64
Encode and decode Base64, Base64 URL and Base64 MIME. Upload files or paste text.
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HTML Entities
Encode and decode HTML entities.
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Data Decoder
Decompress data encoded with Gzip, Deflate, LZMA and other algorithms.
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Generators
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UUID / ULID
Generate UUID v4 and ULID identifiers with one click.
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Hash
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text.
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Lorem Ipsum
Generate Lorem Ipsum placeholder text.
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Password
Generate secure random passwords.
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Cron Expression
Build and visualize cron expressions with a visual editor, human-readable descriptions and next execution times.
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QR Code
Generate QR codes from text or URLs with custom colors and sizes.
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Converters
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JSON Formatter
Format, minify and validate JSON.
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Timestamp
Convert between Unix timestamps and human-readable dates.
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Color
Convert colors between HEX, RGB and HSL formats.
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YAML / JSON
Convert between YAML and JSON formats.
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Number Base
Convert numbers between decimal, binary, octal and hexadecimal.
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XML Formatter
Format, minify and validate XML.
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Text
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Character Counter
Count characters, words, sentences, paragraphs and lines in your text.
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Regex Tester
Test regular expressions with real-time matching and capture groups.
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Markdown Preview
Preview Markdown in real time.
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Case
Convert text between different naming conventions.
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Diff Checker
Compare two texts and highlight the differences.
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SQL Formatter
Format, minify and beautify SQL queries.
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Web / API
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JWT Decoder
Decode and inspect JSON Web Tokens. See header, payload and expiration info.
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Query String Parser
Parse and build URL query strings.
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HTTP Status Codes
Quick reference for all HTTP status codes with descriptions and use cases.
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CORS Headers Builder
Build CORS response headers visually. Configure allowed origins, methods, headers and export for different servers.
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HTTP Client
Test HTTP requests directly in the browser. Send GET, POST, PUT, PATCH, DELETE requests, view responses, and generate code snippets in cURL, Fetch, Python and PHP.
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Chmod
Visual Unix file permissions calculator with numeric and symbolic output.
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DNS Lookup
Visualize the DNS resolution process step by step.
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Webhook
Build and send webhook requests, verify signatures, and use templates.
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Certificate Reader
Read and inspect X.509 digital certificates.
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