Developer Tools
Private browser-side utilities for formatting code, validating data, encoding text, hashing, regex testing, and file conversion.
JSON Formatter
Format compact JSON into clean indented output with validation feedback.
Try Now DEVJSON Validator
Validate JSON and get clear error messages when syntax is invalid.
Try Now DEVJSON Viewer
View JSON as a structured expandable-looking tree with readable indentation.
Try Now DEVBase64 Encode/Decode
Encode text to Base64 or decode Base64 back to readable text.
Try Now DEVURL Encode/Decode
Encode or decode URLs, query strings, and special characters.
Try Now DEVHTML Encoder/Decoder
Encode HTML entities or decode encoded HTML snippets.
Try Now DEVCSS Minifier
Minify CSS snippets by removing comments and unnecessary whitespace.
Try Now DEVJS Minifier
Minify simple JavaScript snippets with safe whitespace and comment cleanup.
Try Now DEVSQL Formatter
Format SQL queries with readable line breaks around common keywords.
Try Now DEVXML Formatter
Format XML snippets with indentation and validation feedback.
Try Now DEVCSV to JSON
Convert CSV rows into JSON objects using the first row as headers.
Try Now DEVJSON to CSV
Convert JSON arrays into CSV with automatic headers.
Try Now DEVUUID Generator
Generate secure UUID v4 values with copy and bulk generation options.
Try Now DEVSHA256 Generator
Generate SHA-256 hashes from text entirely in the browser.
Try Now DEVMD5 Generator
Create lightweight MD5 hashes for non-security checksums and legacy workflows.
Try Now DEVJWT Decoder
Decode JWT header and payload safely without verifying or uploading the token.
Try Now DEVCron Expression Generator
Generate cron expressions from friendly schedule controls with a readable explanation.
Try Now DEVUnix Timestamp Converter
Convert Unix timestamps to local dates and convert date-time values back to timestamps.
Try Now DEVJWT Generator
Generate development JWT tokens from editable JSON header, payload, and a local HS256-style secret.
Try Now DEVCURL Generator
Build clean cURL commands from method, URL, headers, and request body inputs.
Try Now DEVMarkdown Previewer
Preview Markdown as clean HTML with headings, lists, links, code blocks, and copyable output.
Try Now DEVYAML Formatter
Clean and lightly format YAML-style configuration snippets for easier reading.
Try Now DEVHTACCESS Generator
Generate common .htaccess rules for clean URLs, security headers, cache, and redirects.
Try Now DEVRegex Tester
Test regular expressions against sample text with match counts and highlights.
Try Now DEVDiff Checker
Compare two text blocks and highlight added, removed, and changed lines.
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Browser-based developer tools for everyday work
Developer Tools on ToolsLuv are made for quick everyday tasks. Use the tools on mobile or desktop, preview the result clearly, and finish common work without signup or unnecessary steps.
This category keeps the interface simple: enter the values, review the output instantly, copy or download where needed, and move on. The pages also include explanations, examples, and FAQs so visitors understand the formula or logic behind each tool.