Developer Utilities

Online Developer Tools

Free, fast, and secure developer tools that run entirely in your browser. Format JSON, convert XML, compress images and PDFs, inspect files, and finish everyday tasks without uploads, signup, or server-side processing.

Viewers & Editors

Markdown Viewer & Editor

Preview and edit Markdown with live visualization.

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SVG Viewer

A powerful, secure, and free online tool to view, edit, optimize, and preview SVG files instantly. Support real-time code editing, zoom controls, and file export - all processed locally in your browser for maximum privacy.

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HTML Viewer

Preview and edit HTML code in real-time.

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OPML Viewer

View and analyze OPML files structure.

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CSV Viewer

View, analyze, and convert CSV files.

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XML Viewer Online

Open, view, and format XML files online with tree view and validation.

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MXML Viewer

View, format, and analyze MXML files.

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GIF Viewer

View, play, pause, and extract frames from animated GIFs. Analyze GIF metadata including dimensions, duration, and frame count.

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BBCode Viewer

A simple and powerful tool to view, edit, and preview BBCode in real-time. Perfect for forum posts and message boards.

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YAML Viewer

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

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RSS Viewer

Parse and preview RSS/Atom feeds.

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LaTeX to JSON

Convert LaTeX tables to JSON arrays or objects.

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Image & Chart Tools

Tiny Image Compressor

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

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App Icon Generator

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

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JPG Converter

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

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PNG Converter

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

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BMP Converter

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

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Icon Converter

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

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WebP Converter

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

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Data Converters

Gzip Compress

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

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Gunzip Decompress

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

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Archive Extractor

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

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Compress PDF

Reduce PDF file size efficiently.

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Merge PDF

Merge multiple PDF files into one ordered document.

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Split PDF

Split one PDF into separate pages or custom page ranges.

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OPML to JSON

Convert OPML outlines to JSON.

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MediaWiki to JSON

Convert MediaWiki tables to JSON arrays or objects.

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HTML to JSON

Convert HTML structure to JSON tree.

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CSV to JSON

Convert CSV rows to JSON objects.

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JSON to CSV

Convert JSON data into clean CSV output.

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Excel to JSON

Convert Excel spreadsheets to JSON.

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SQL to JSON

Convert SQL INSERTs to JSON objects.

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MySQL to JSON

Convert MySQL INSERTs to JSON objects.

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Markdown to JSON

Convert Markdown AST, tables, and frontmatter to JSON.

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LaTeX to JSON

Convert LaTeX tables to JSON arrays or objects.

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URL to JSON

Parse URL parts and output structured JSON.

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YAML to JSON

Convert YAML to JSON or JSON to YAML.

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XML to JSON

Convert XML string to JSON object.

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JSON to XML

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

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CSV Viewer

View, analyze, and convert CSV files.

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Developer Utilities

JSON Compare & Diff

Compare JSON objects and find differences.

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JSON Formatter & Validator

Format, validate, and visualize JSON data.

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HTML Minifier/Formatter

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

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CSS Minifier/Formatter

Compress or format CSS code.

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JS Minifier/Formatter

Compress or format JavaScript code.

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XML Minifier/Formatter

Minify or format XML text.

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Encode & Decode

Base64 Converter

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

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Base32 Converter

Encode and decode Base32 data.

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Base58 Converter

Encode and decode Base58 data.

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URL Encode / Decode

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

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Base64 to Image

Convert Base64 strings to images.

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Image to Base64

Convert images to Base64 strings.

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Color Tools

Color Converter

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

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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.

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Cryptography

JWT Decoder & Inspector

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

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String & Text

Text Compare & Diff

Compare text and find differences line-by-line.

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Markdown Viewer & Editor

Preview and edit Markdown with live visualization.

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Free Online Developer Tools for JSON, PDF, Images, Text, and Code

Use fast browser-based developer tools for JSON conversion, PDF workflows, image compression, text diffing, and everyday coding tasks without uploads.

Privacy First

All data processing happens locally in your browser. Your sensitive JSON, XML, or images never leave your device.

Blazing Fast

Experience zero-latency conversions and formatting powered by modern client-side technologies.

Developer Focused

Clean interfaces, dark mode support, and keyboard shortcuts tailored for professional developers.

About Developer Tools

This site brings together practical utilities for data conversion, file compression, code formatting, and content preview. From image optimization and app icon generation to working with XML, JSON, Gzip, and PDF, everything runs locally in your browser so your files stay on your device.