Developer Tools Tools

Hash Generator — MD5 and SHA

Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes from UTF-8 text in your browser. Compare Hex and Base64 outputs or calculate all five at once.

Base64 Encoder and Decoder

Encode UTF-8 text, decode standard Base64 and convert supported images to data URLs in your browser. Supports PNG, JPEG, GIF, WebP and static SVG up to 2 MiB.

JSON Formatter and Validator

Validate JSON syntax, format or minify it while preserving number notation, string escapes and duplicate keys. Preview your input and inspect its structure in your browser.

UUID and ULID Generator

Generate up to 100 UUID v4, UUID v7 or ULID values in your browser. Copy a batch, validate an ID's format and inspect supported embedded timestamps in UTC.

URL Encoder and Decoder

Encode URI components or complete URIs, decode UTF-8 percent escapes, and copy or download results in your browser. Includes encodeURIComponent and encodeURI outputs.

Online Binary and Hex Editor

Inspect and edit binary files as hexadecimal bytes, compare two files, jump to differences, and download edits without uploading files to a server.

File Transfer Time Calculator

Estimate upload, download, backup, or copy time from file size, transfer speed, and an adjustable throughput reduction.