Tool Studio19 tools in this category
Convert images to Base64 encoded strings instantly for easy embedding in HTML, CSS, JSON, or any text-based format. Supports all common image formats including PNG, JPG, GIF, WebP, and SVG. Features multiple output formats (Data URI, Plain Base64, HTML img tag, CSS background-image, JSON), drag-and-drop upload, real-time preview with file information, one-click copy to clipboard, and download as text file. Perfect for web developers embedding images inline, API responses with image data, email templates, offline web apps, and reducing HTTP requests. Shows original and Base64 file sizes with increase percentage. 100% client-side processing ensures complete privacy - images never leave your device.
Decode Base64 encoded strings back to image files instantly. Perfect for developers working with Base64 image data in web applications, APIs, or databases. Supports all common image formats including PNG, JPG, GIF, WebP, and BMP. Features include pasting Base64 strings (with or without data URI prefix), automatic format detection, live image preview with dimensions and file size, one-click download of decoded images, and format information display. Handles both raw Base64 strings and complete data URI format (data:image/png;base64,...). Useful for debugging API responses with Base64 images, converting database-stored Base64 images, testing Base64 image data, extracting images from JSON/API responses, and validating Base64 encoded images. 100% client-side processing ensures complete privacy - all decoding happens in your browser, data never leaves your device. No file size limits.
Convert Unix epoch timestamps to human-readable dates and back. Live current-timestamp ticker, auto-detects seconds vs milliseconds, outputs ISO 8601, UTC, local time, and relative ("2 hours ago") formats. Perfect for debugging logs, APIs, and databases.
Convert colors between HEX, RGB, and HSL instantly, and generate shade, complementary, analogous, and triadic palettes from any base color. All processing happens in your browser.
Encode or decode URLs and URL components instantly. Supports both component encoding (encodeURIComponent, for query params) and full-URL encoding (encodeURI, preserves URL structure). Perfect for debugging query strings, API requests, and web forms.
Convert images between PNG, JPEG, and WebP formats instantly. Preview before/after file size. All conversion happens in your browser — images never leave your device.
Convert every page of a PDF into a JPG image. Choose standard, high, or maximum quality, download all pages as a single zip. Files are processed securely and deleted automatically after conversion.
Convert iPhone HEIC/HEIF photos to standard JPEG. Most browsers and apps can't open HEIC directly — this converts it to a universally compatible JPEG. Files are processed securely and deleted automatically after conversion.
Convert YAML to JSON or JSON to YAML instantly, in either direction, with clear parse-error messages. All conversion happens in your browser.
Convert between length, weight, and temperature units instantly. Free, works entirely in your browser.
Convert numbers between binary, octal, decimal, and hexadecimal instantly. Type in any field and the others update live. Uses arbitrary-precision math, so very large numbers stay accurate. All processing happens in your browser.
Calculate the exact number of days, weeks, months, and years between two dates, with an optional business-days-only count. All calculation happens in your browser.
Convert a video clip into an animated GIF. Choose the frame rate, width, and section of the video to convert. Files are processed securely and deleted automatically after conversion.
Convert SVG markup or files to PNG images at any scale, from 1x up to 8x for crisp high-resolution output. All rendering happens in your browser using canvas — nothing is uploaded.
Paste a curl command and get a working ApiClient class in JavaScript (fetch or axios), Python (requests or the stdlib http.client), PHP (cURL or Guzzle), Go, Java, or C# — headers, body, and Basic auth all mapped correctly. Free, works entirely in your browser.
Paste raw Protocol Buffers (protobuf) bytes as base64 or hex and see every field decoded — no .proto schema needed. Shows every plausible interpretation of each field, since the wire format alone can't say which one is correct.
Paste JSON and generate class or struct definitions in TypeScript, Java, Go, Python, C#, Kotlin, or C++ — with explicit control over field and class naming convention, and real nested-class generation. Free, works entirely in your browser.
Paste a Base64 string or data URI and get back a real, previewable, downloadable PDF file. Free, works entirely in your browser.
Convert a PDF file to a Base64 string, ready to embed in HTML, CSS, JSON, or an API payload. Free, works entirely in your browser.