All Tools

Browse all free online developer tools — JSON, CSV, Excel, image, PDF, encoding converters, minifiers, and more.

Viewers & Editors

Markdown Viewer & Editor

Preview and edit Markdown with live visualization.

Open tool

SVG Viewer

View and edit SVG in the browser: paste code or open an .svg file, check the live preview with zoom, format or minify the markup, then copy or download it.

Open tool

HTML Viewer

Open an .html file or paste markup and see the rendered page live beside the code.

Open tool

OPML Viewer

Open OPML files online and view the outline tree and RSS feed links.

Open tool

CSV Viewer

Open, edit and export CSV files with any delimiter.

Open tool

Open & View XML Files Online

Open a .xml file in your browser with no software: collapsible tree of elements and attributes, formatting, and syntax errors with line and column. Nothing is uploaded.

Open tool

MXML Viewer

View, format, and analyze MXML files.

Open tool

GIF Viewer

Open animated GIFs online, pause and step through frames, read frame count, duration and delays, and save frames as PNG or one ZIP.

Open tool

Online BBCode Editor

Format BBCode from a toolbar, preview it live and export HTML — 34 forum tags, nothing uploaded.

Open tool

YAML Viewer

A free online tool to view, validate, and convert YAML to JSON. Perfect for configuration files and data serialization.

Open tool

Online RSS Reader

Subscribe to feeds and read them in one timeline, or paste RSS/Atom XML to inspect its structure and parsed JSON.

Open tool

LaTeX to JSON

Convert LaTeX tables to JSON arrays or objects.

Open tool

Image & Chart Tools

Tiny Image Compressor

Smart PNG/JPG compression. Reduce file size up to 80%.

Open tool

App Icon Generator

Generate app icons for iOS, Android, Web, and Desktop.

Open tool

JPG Converter

Convert images (PNG, WebP, etc.) to JPG format.

Open tool

PNG Converter

Convert images (JPG, WebP, etc.) to PNG format.

Open tool

BMP Converter

Convert images (JPG, PNG, etc.) to BMP format.

Open tool

Icon Converter

Convert images (JPG, PNG, etc.) to ICON format.

Open tool

WebP Converter

Convert images (JPG, PNG, etc.) to WebP format.

Open tool

Data Converters

Gzip Compress

Compress or decompress text and files with a free online Gzip tool.

Open tool

Gunzip Decompress

Open and extract .gz files or Base64 gzip strings online.

Open tool

Archive Extractor

Open 7Z, ZIP, RAR, TAR, ISO, DMG and more online with a browser-based extractor.

Open tool

Compress PDF

Reduce PDF file size efficiently.

Open tool

Merge PDF

Merge multiple PDF files into one ordered document.

Open tool

Split PDF

Split one PDF into separate pages or custom page ranges.

Open tool

OPML to JSON

Convert OPML outlines to JSON.

Open tool

MediaWiki to JSON

Convert MediaWiki tables to JSON arrays or objects.

Open tool

HTML to JSON

Convert HTML structure to JSON tree.

Open tool

CSV to JSON

Convert CSV rows to JSON objects.

Open tool

JSON to CSV

Convert JSON data into clean CSV output.

Open tool

JSON to Excel

Convert JSON to a downloadable .xlsx Excel file in your browser.

Open tool

Excel to JSON

Convert Excel spreadsheets to JSON.

Open tool

SQL to JSON

Convert SQL INSERTs to JSON objects.

Open tool

MySQL to JSON

Convert MySQL INSERTs to JSON objects.

Open tool

Markdown to JSON

Convert Markdown AST, tables, and frontmatter to JSON.

Open tool

LaTeX to JSON

Convert LaTeX tables to JSON arrays or objects.

Open tool

URL to JSON Converter

Parse a URL's protocol, host, port, path and query parameters into structured JSON.

Open tool

YAML to JSON

Convert YAML to JSON or JSON to YAML.

Open tool

XML to JSON

Convert XML string to JSON object.

Open tool

JSON to XML

Convert JSON object or array to XML online with formatted output.

Open tool

CSV Viewer

Open, edit and export CSV files with any delimiter.

Open tool

Env to JSON

Convert .env files to JSON with type inference and nested keys.

Open tool

JSON to Env

Convert JSON objects to .env KEY=VALUE format with dotted-key flattening.

Open tool

Properties to JSON

Convert Java .properties files to JSON with nested dotted keys and type inference for numbers and booleans.

Open tool

JSON to Properties

Convert JSON objects to Java .properties format with dotted-key flattening.

Open tool

Developer Utilities

JSON Compare & Diff

Compare JSON objects and find differences.

Open tool

JSON Formatter & Validator

Format, validate, and visualize JSON data.

Open tool

HTML Minifier/Formatter

Minify or format HTML text with 2/4-space indent.

Open tool

CSS Minifier/Formatter

Compress or format CSS code.

Open tool

JS Minifier/Formatter

Compress or format JavaScript code.

Open tool

XML Minifier/Formatter

Minify or format XML text.

Open tool

Encode & Decode

Base64 Converter

Encode/Decode text and files with real-time conversion.

Open tool

Base32 Converter

Encode and decode Base32 data.

Open tool

Base58 Converter

Encode and decode Base58 data.

Open tool

URL Encode / Decode

Encode or decode percent-encoded URL text instantly for query strings, redirect URLs, and API parameters.

Open tool

Base64 to Image

Convert Base64 strings to images.

Open tool

Image to Base64

Convert images to Base64 strings.

Open tool

Color Tools

Color Converter

Convert RGB, RGBA, HEX, HSL, HSLA, HSV, HSVA, CMYK, and CMYKA with live sync.

Open tool

OKLCH Color Converter

Convert OKLCH, OKLab, RGB, HSL, and HEX with live sync. CSS Color 4 gamut mapping and Tailwind v4 palette.

Open tool

Unit & General Converters

Unix Timestamp Converter

Convert Unix timestamp to date and date to Unix timestamp in seconds, milliseconds, ISO 8601, UTC, and local time.

Open tool

Cryptography

JWT Decoder & Inspector

Decode JWT headers and payloads, inspect claims, and check exp, iat, and nbf locally in your browser.

Open tool

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes online. Real-time, client-side only.

Open tool

String & Text

Text Compare & Diff

Compare text and find differences line-by-line.

Open tool

Markdown Viewer & Editor

Preview and edit Markdown with live visualization.

Open tool

Multilingual Slug Generator

Turn text into URL slugs, transliterating Chinese to pinyin, Japanese kana to romaji and Cyrillic to Latin.

Open tool

Network & IP

QR Code Generator

Convert URL to QR code online. Choose size, colours and a centre logo, download PNG or SVG. Free, client-side only.

Open tool

Random Generators

UUID Generator

Generate UUID v4 or v7 in bulk, in any case, with or without hyphens. Client-side only.

Open tool

Password Generator

Generate strong random passwords online — custom length, character sets. Free, client-side only.

Open tool