Frame64: Image to Base64

Convert images to Base64, optimize file size, resize, crop, compare quality, and export Data URLs directly in your browser.

Frame64 — Image Optimization and Base64 Conversion, Right in Chrome Frame64 makes it easy to prepare, optimize, compare, and convert images to Base64 without uploading your files to an external service. Use the compact popup for quick conversions, or open the full Workspace when you need detailed controls, visual comparisons, batch processing, and PDF page conversion. Built for developers, designers, and creators, Frame64 keeps powerful image tools close at hand while processing everything locally on your device. QUICK CONVERSION Need Base64 code quickly? Drop, browse, or paste an image into the popup, choose your settings, and export your result in seconds. • Encode images into Base64 • Decode Base64 back into an image • Paste images or Base64 from your clipboard • Copy generated code instantly • Download processed images or Base64 text • Continue editing in the full Workspace VISUAL COMPARISON WORKSPACE Open the Workspace to compare your source and processed images side by side using an interactive comparison slider. Pan and zoom both images together to inspect fine details and determine whether your compression settings preserve enough quality. The Workspace also includes: • Source, output, Base64-size, and savings metrics • Undo and redo history • Saved conversion presets • Keyboard shortcuts and command palette • Target file-size optimization IMAGE OPTIMIZATION AND EDITING Fine-tune your output before converting or downloading it. • Export as PNG, JPEG, or WebP • Adjust JPEG and WebP encoding quality • Resize by width, height, maximum dimensions, or percentage • Crop unwanted pixels from every side • Rotate images to any angle • Flip images horizontally or vertically • Replace transparent areas with a selected background color • Preserve the original file when no processing is needed BATCH AND PDF WORKFLOWS Process more than one file without repeating the same steps. • Convert multiple images as a batch • Reorder or remove individual batch items • Download individual results • Export the entire batch as a ZIP file • Preview and select PDF pages visually • Reorder PDF pages before conversion • Convert selected PDF pages into images DEVELOPER-READY OUTPUTS Generate Base64 in the format your project needs: • Data URL • Raw Base64 • HTML image element • CSS background image • JavaScript constant • Markdown image PRIVATE BY DESIGN Your images, PDFs, and Base64 data remain on your device. Frame64 performs conversion, editing, and optimization locally inside your browser. No file uploads. No conversion servers. No account required for current features. SUPPORT EARLY DEVELOPMENT Frame64 is currently fully free, with every available feature included. Users who want to support continued development can optionally purchase a one-time $5 Founding License. Founding supporters help fund future improvements and lock in access to future premium features while the introductory price remains available. Install Frame64 and turn image-to-Base64 conversion into a faster, more visual workflow.