All tools

Browser tools

Pick a tool. JSON, PDF, and the other utilities run in this browser.

JSON and data formats

JSON Formatter

Format, validate, and minify JSON in the browser

JSON Workbench

Compare, convert, flatten, and query JSON in the browser

JSON to CSV

Convert a JSON array of objects to CSV in the browser

JSON Mock Data

Generate sample JSON records in the browser from field names and types

API Response Builder

Build a local JSON API response for common HTTP statuses

YAML Formatter

Format and validate YAML in the browser

PDF files

PDF Merge

Combine PDF files in the browser

PDF Split

Split a PDF in the browser

PDF Compress

Reduce PDF file size in the browser

PDF Password Remover

Remove a known PDF password in the browser

Rotate PDF

Rotate every PDF page by 90, 180, or 270 degrees

Images to PDF

Place each JPG or PNG on its own A4 page

PDF to PNG

Draw up to 25 PDF pages into a PNG zip

PDF Page Numbers

Draw a 1 / N label at the bottom of every page

PDF Watermark

Draw one line of gray text across every page

Organize PDF

Reorder PDF pages or leave pages out

Other browser tools

Regex Tester

Test JavaScript regular expressions in the browser

Base64 Converter

Encode and decode Base64 in the browser

Color Picker

Pick colors and copy hex values

Diff Checker

Compare two text blocks

Cron Generator

Build and read cron expressions

cURL Generator

Build a cURL command for an HTTP request

SQL Formatter

Format SQL text in the browser

CSS Beautifier

Format and minify CSS in the browser

HTML Formatter

Format and minify HTML in the browser

UUID Generator

Generate UUIDs in the browser

Guides

Guide

JSON Parse Errors

Why JSON.parse rejects trailing commas, quotes, and comments

Guide

JSON to CSV Guide

How a JSON array of objects becomes CSV rows

Guide

JSON Workbench Guide

Compare, repair, and query JSON in the browser

Guide

YAML and JSON

Which page validates YAML and which page converts it

Guide

Regex Tester Limits

JavaScript RegExp limits and refused patterns

Guide

PDF Tools Guide

What the browser PDF tools do, including rotate, images, page numbers, and watermarks