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