JSON Base64 URL JWT Regex Time UUID Hash HTML

devtoolgrid.online

Nine sharp browser tools in one grid.

Format payloads, decode tokens, parse URLs, test regex, generate hashes and convert timestamps without leaving the browser.

No upload flow. Tools run in the browser with direct pages for every utility.
01

JSON formatter, JSON validator and JSON decoder online

Format, minify, validate, sort keys, copy and download JSON payloads. Open 02

Base64 encoder and Base64 decoder online

Encode and decode Unicode text with optional URL-safe output. Open 03

URL encoder, URL decoder and query string parser

Encode values, decode query strings, and inspect URL parts and params. Open 04

JWT decoder and JSON Web Token parser online

Decode JWT header, payload and useful token metadata in the browser. Open 05

Regex tester, regular expression checker and replacer

Test expressions, flags, matches and replacement output live. Open 06

Unix timestamp converter and epoch time tool

Convert seconds, milliseconds, ISO dates, UTC and local time formats. Open 07

UUID generator, GUID generator and UUID validator

Generate up to 100 UUIDs and validate existing UUID values. Open 08

MD5, SHA-256, SHA-512 and hash generator online

Generate MD5, CRC32, SHA-1, SHA-256, SHA-384 and SHA-512 hashes. Open 09

HTML entity encoder and HTML entity decoder online

Encode and decode HTML entities for markup, attributes and text. Open

devtoolgrid.online

DevToolGrid Online developer tools

json formatter online, json validator, json decoder, base64 decoder online

DevToolGrid Online keeps everyday browser utilities in one place: json formatter online, json validator, json decoder, base64 decoder online, base64 encoder, url decoder. Developers can clean JSON payloads, decode Base64 and JWT tokens, inspect URLs, test regular expressions, convert Unix timestamps, generate UUID values, create MD5 or SHA-256 hashes, and encode or decode HTML entities without uploading data.

The tool pages are built for direct access and search intent, covering common tasks like url encoder, jwt decoder, regex tester, unix timestamp converter, uuid generator, guid generator, md5 generator, sha256 generator, html entity decoder.

json formatter online json validator json decoder base64 decoder online base64 encoder url decoder url encoder jwt decoder regex tester unix timestamp converter uuid generator guid generator md5 generator sha256 generator html entity decoder