Developer tools
Convert URLs and data, generate hashes and create .htaccess rules.
Browse tools
Developer tools: choose your task
.htaccess generator
Create Apache 2.4 rules for www normalization, HTTPS redirects and Basic authentication. Generate locally in your browser, then copy or save the result.
URL encoder
Encode or decode a URL component or an entire URL. Component mode escapes separators; whole-URL mode preserves them. This is not form encoding: plus signs are not treated as spaces.
Base64 converter
Encode and decode UTF-8 text, including emoji, as Base64. Supports standard and URL-safe Base64. Binary files are not supported. Base64 is encoding, not encryption.
HTML escape
Escape HTML special characters or decode character references. Decodes amp, lt, gt, quot, apos, nbsp and numeric references. Input is displayed as text, never executed as HTML.
SHA hash generator
Generate a SHA-256, SHA-384 or SHA-512 hash of text. Hashes UTF-8 bytes, including trailing spaces and line breaks. This is not a password-storage hashing function.
CSV and JSON converter
Convert CSV with headers to a JSON array of objects and back. CSV cells stay strings. Nested JSON is not supported. CSV export can prefix formula-like cells with an apostrophe for spreadsheet use.
Number base converter
Convert large integers between binary, octal, decimal and hexadecimal. Accepts signed integers up to 1,024 characters, without fractions or prefixes such as 0x. BigInt preserves integer precision.
Clean share URLs
Remove known tracking parameters and review what changed before sharing. Removes utm_ parameters and known click identifiers only, without fetching the URL. Check the destination before sharing.