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DevToolKit
Practical PDF, image, developer, and everyday tools

Clearly labeled processing for everyday tasks.

Core processing runs in the browser for most tools. Server-backed and external-provider workflows are labeled separately. Basic tools are available without signup; individual limits vary by tool.

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Developer Workbench

Useful tools for everyday developer work

Format JSON and SQL, encode data, inspect JWTs, test regex, compare text, and generate common developer values in your browser.

Open JSON FormatterTest a Regex
Inspect JWTBase64Text DiffHash Generator·Browse all developer tools
14 toolsIn-browserNo signup

Popular starting points

  • Format JSON syntaxJSON Formatter
  • Format or minify SQLSQL Formatter
  • Minify supported codeCode Minifier
  • Encode or decode Base64Base64

Format & transform

Format and validate JSON, format or compact SQL, and reduce supported JavaScript, CSS, and HTML snippets.

3 tools

JSON Formatter

Automatically validate and pretty-print JSON syntax.

In-browser

SQL Formatter

Format or compact supported SQL text.

In-browser

Code Minifier

Minify supported JavaScript, CSS, and HTML snippets.

In-browser

Encode & decode

Encode or decode supported Base64 text and URL text using the tool’s percent-encoding behavior.

2 tools

Base64 Encoder/Decoder

Encode or decode supported text with Base64.

In-browser

URL Encoder / Decoder

Encode or decode URL text using supported percent-encoding behavior.

In-browser

Tokens & security

Decode JWT claims, generate supported hashes, passwords, and UUID v4 or timestamp-based v7 identifiers in the browser.

4 tools

JWT Decoder

Read JWT headers and payload claims without signature verification.

In-browser

Hash Generator

Generate and compare supported hash values.

In-browser

Password Generator

Generate passwords locally using the browser’s cryptographic random source.

In-browser

UUID Generator

Generate UUID v4 and timestamp-based v7 identifiers for development and testing.

In-browser

Regex & text

Test JavaScript regex patterns and compare two text versions line by line.

2 tools

Regex Tester

Test JavaScript regular expressions against sample text.

In-browser

Text Diff Checker

Compare two text versions and review line-level additions and removals.

In-browser

Developer helpers

Create QR codes, convert HEX/RGB/HSL colors, and convert supported Unix timestamps.

3 tools

QR Code Generator

Create QR codes for supported text or URL input in the browser.

In-browser

Color Converter

Convert between the implemented HEX, RGB, and HSL representations.

In-browser

Timestamp Converter

Convert supported Unix timestamps and date values.

In-browser

How to choose the right tool

Developers and technical users who format JSON, inspect JWT claims, test regex, compare text, encode data, and run quick generation tasks in the browser.

Match your task to the tool that implements it.

  • Format JSON syntaxJSON Formatter
  • Format or minify SQLSQL Formatter
  • Minify supported codeCode Minifier
  • Encode or decode Base64Base64
  • Encode or decode URL textURL Encoder
  • Inspect JWT claimsJWT Decoder
  • Generate a supported hashHash Generator
  • Generate a passwordPassword Generator
  • Generate UUID v4 or timestamp-based v7 identifiersUUID Generator
  • Test a JavaScript regexRegex Tester
  • Compare two text versionsText Diff
  • Create a QR codeQR Code Generator
  • Convert HEX, RGB, and HSLColor Converter
  • Convert supported timestampsTimestamp Converter

Avoid pasting production API keys, tokens, or passwords on shared or untrusted devices.

All fourteen Developer Workbench tools run in your browser.

FAQ

Quick answers about privacy, local processing, and accounts.

Do the Developer tools run locally?

Their core formatting, encoding, comparison, hashing, and generation operations run in the browser where confirmed. Ordinary site assets and identified analytics may still generate network requests.

Do I need an account?

No signup is required for normal use. Open a tool, enter input, and copy or download the result where supported.

Is it safe to paste production API keys or tokens?

No. Avoid production secrets on shared or untrusted devices. Local processing reduces server transmission but does not protect clipboard history, extensions, or compromised browsers.

Does JWT Decoder verify signatures?

No. It decodes JWT header and payload claims without verifying the signature. A decoded token is not proof that it is genuine or unaltered.

Is Base64 encryption?

No. Base64 is an encoding format, not encryption. It does not hide secrets or provide security by itself.

Are hashes encryption?

No. Hashes are one-way checksum values. They are not reversible and are not the same as encryption.

Can Hash Generator securely store passwords?

No. It generates or compares supported hash values for debugging and compatibility workflows. It is not a password-storage or breach-checking service.

Related workspaces

Need PDFs, images, or everyday utilities?

PDF Workspace

Merge, compress, sign, and secure PDFs.

Image Studio

Compress, convert, and prepare images.

14 developer tools·Privacy & trust