Free Online Tools for Developers

Android API Level Finder

Find Android API levels, version names, codenames, and release years. Search the complete Android platform version table in your browser.

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Android App Icon Size Checker

Check an Android app icon for Google Play's 512 x 512 dimensions, 32-bit PNG format, alpha channel, and 1 MB file-size requirements.

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Android Density Calculator

Calculate Android dp to px or px to dp values across mdpi, hdpi, xhdpi, xxhdpi, and xxxhdpi density buckets.

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Android Drawable Density Generator

Generate Android drawable PNG assets for mdpi, hdpi, xhdpi, xxhdpi, and xxxhdpi from one source image in your browser.

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Android Manifest Permission Generator

Select Android permissions and generate uses-permission declarations for AndroidManifest.xml, with protection levels and API version notes.

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Android Package Name Generator

Generate and validate reverse-domain Android package names from your domain, company, and app name for applicationId and package declarations.

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Base64 Encode and Decode Tool

Encode and decode Base64 in your browser. Convert text to Base64 or decode Base64 back to readable text.

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Case Converter

Convert text case in your browser. Change text to uppercase, lowercase, title case, or sentence case.

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Character Counter with Live Text Stats

Count characters with live stats for letters, spaces, words, lines, and paragraphs. Paste or type text in your browser and get instant results.

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