Pick a Tool to Get Started
JSON Formatter & Validator
Format, validate and beautify messy JSON instantly, with clear error messages and line numbers for anything invalid.
Use ToolPassword Generator
Generate highly secure, fully customizable random passwords with adjustable length and character sets.
Use ToolBase64 Encoder / Decoder
Encode text to Base64 or decode a Base64 string back to readable text, instantly in your browser.
Use ToolURL Encoder / Decoder
Percent-encode special characters in a URL or query string, or decode an already-encoded URL back to readable text.
Use ToolQR Code Generator
Generate a QR code from any text, URL, Wi-Fi login or message — choose the size, colors and error-correction level.
Use ToolFavicon Generator
Turn any square image into a complete favicon package — a multi-size .ico, every PNG size browsers expect, and a ready-to-use site.webmanifest.
Use ToolHTML/CSS/JS Beautifier
Clean up minified or messy HTML, CSS or JavaScript with proper indentation and line breaks, instantly.
Use ToolMinifier (HTML/CSS/JS)
Strip whitespace and comments from HTML, CSS or JavaScript to shrink file size for faster page loads.
Use ToolMarkdown Previewer
Write Markdown on one side and see the live-rendered HTML on the other, updated instantly as you type.
Use ToolHash Generator (MD5, SHA-256)
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text instantly, to verify file integrity or check a checksum.
Use ToolJWT Decoder
Paste a JSON Web Token to instantly decode its header and payload, plus see when it was issued and when it expires.
Use ToolRegex Tester
Write a regular expression and test it against sample text instantly, with every match highlighted and capture groups listed.
Use ToolUUID/GUID Generator
Generate unique UUID v4 identifiers instantly — one at a time or in bulk, with optional uppercase or no-hyphen formatting.
Use ToolEpoch/Unix Timestamp Converter
Convert a Unix timestamp to a readable date, or a date back to a timestamp — plus a live current timestamp.
Use ToolSQL Query Formatter
Format messy, single-line SQL into clean, properly indented queries — supports MySQL, PostgreSQL, SQLite, SQL Server and more.
Use ToolHow to Use Any Developer Tool
Paste or Type
Drop your text, code or data straight into the tool — no file upload needed.
Adjust
Set the options for this tool to match exactly what you need.
Get Your Result
See the formatted, generated or decoded output instantly, right in your browser.
About House of Convert's Developer Tools
House of Convert's developer and IT utilities cover the small, daily tasks every web developer and sysadmin reaches for — formatting JSON, generating passwords, decoding tokens, testing a regex — all running instantly in your browser with nothing to install and nothing sent anywhere unnecessary.
What Makes These Developer Tools Different
Instant, No Upload
Most of these tools run entirely in your browser — there's no file to upload and no server round-trip to wait on.
Built for Daily Use
The exact utilities developers reach for constantly: formatters, encoders, generators and testers.
Nothing Stored
Whatever you paste or generate stays in your browser tab and is never logged or saved on our servers.
Frequently Asked Questions
Are these Developer tools really free?
Yes — every developer tool at House of Convert is 100% free, with no sign-up, no watermarks and no daily limit.
Will my files be stored after processing?
No. Files are processed in memory for your request only and discarded immediately afterward.
Can I use these tools on my phone?
Yes. Every tool at House of Convert is fully responsive and works in desktop, tablet and mobile browsers.
Ready to Try a Developer Tool?
Pick any tool above and get your result in seconds — free, private, and with no sign-up required.
Open JSON Formatter & Validator