Inspect Nintendo GameCube save files (.gci) and raw memory card dumps (.raw, .gcp, .mpk) in your browser. View Shift-JIS save comments, extract game icons (.png), and export individual Dolphin emulator saves.
Detailed side-by-side format architecture for GCI Document (.gci) and JavaScript Object Notation (.json). Every conversion executes strictly within isolated browser memory without network transit.
Drag and drop your .gci file onto the working surface or use the system file dialog. File magic bytes are verified locally on device.
Select a quality preset (Lossless, Visually Lossless, Balanced, Smallest) or adjust advanced encoding switches in the options panel.
Click CONVERT to execute local WebAssembly compilation. Save the finished .json directly to local storage, or stage it for chaining.
Prefer local shell scripting? Run this standard POSIX command on your machine to achieve equivalent transcoding without a web interface:
# Convert GCI to JSON locally
pandoc input.gci -o output.jsonWorking with files across multiple web pages? The official convrtr Chrome Extension adds native Side Panel docking, right-click context menu media extraction, and visible viewport capture. Powered by the same zero-upload client-side WebAssembly engine.
A .gci file is a Nintendo GameCube single-game save file format used by Dolphin emulator, Swiss homebrew, and GCMM (GameCube Memory Card Manager). It includes a 64-byte header followed by game data blocks.
Yes. Raw 512KB (59 block), 2MB (251 block), and 8MB (1019 block) memory card dumps (.raw, .gcp, .mpk) are automatically scanned, extracting all stored saves into separate .gci files.
Yes. Dual 32-byte comment lines stored in Japanese Shift-JIS or Western ASCII are decoded into clean UTF-8 text.
No. All parsing, banner/icon decoding, and ZIP generation run 100% locally in your web browser.
GCI Document (GCI) and JavaScript Object Notation (JSON) serve distinct roles across the digital workflow. Converting to JSON provides optimized compatibility, modern compression efficiency, or standardized playback across web browsers, operating systems, and media production environments.
The output format (JSON) is inherently lossless or supports lossless operation. Your original visual or audio fidelity is mathematically preserved without quantization artifacts.
Never. convrtr is architected with a strict zero-upload model. All processing, decoding, decompression, and encoding happen 100% locally on your machine using sandboxed WebAssembly and Web Workers. Your data never touches an external server, database, or analytics collector.
You can execute this conversion locally via command-line utilities such as ffmpeg, cwebp, or ImageMagick. For example: see the developer terminal recipe provided in the technical specifications dossier above. convrtr provides the identical local-first capability directly inside your browser without installing CLI packages.
Yes. You can drop multiple .gci files into the instrument to process them concurrently in browser Web Workers, or click 'Open in Master Studio' to queue mixed formats, configure individual targets, and export as a single ZIP archive.
Convert web media, local files, and document assets directly in Chrome Side Panel using client-side WebAssembly, zero-server uploads, and the official convrtr browser extension.
A byte-level walkthrough of the MLW container format: the Root marker, the filename block, the AES-GCM payload, and the one part of the layout nobody has documented.
MLW uses a single fixed encryption key shared across every install of the app. What that means for whether unwrapping it counts as DRM circumvention — in plain English, not legal advice.